Technical Manual of Oceanair Refrigeration and Air ...resource-jn.jerei.com/40025/16060610262938_0.pdf · Technical Manual of Oceanair Refrigeration and Air-Conditioning Series Products

Technical Manual of Oceanair Refrigeration and Air-Conditioning Series Products

1

Product overview

Yantai Oceanair Refrigeration & Air-Conditioning Co.,Ltd. was established in 2004 and has been listed on the New OTCBB (Stock Code: 831870). We are mainly specialized in the development, design, manufacturing, sales and after-sales service of air-conditioning equipments, the installation and commissioning of refrigeration and air-conditioning equipments, engineering design and technical consultation services. Our leading products include underground water source heat pumps, sewage source heat pumps, seawater source heat pumps, ground source heat pumps, low and medium temperature water chillers etc. They are widely used in comfort air-conditioning systems in residential and industrial buildings, and are also applied for water temperature control in marine aquaculture, aquatic products processing, as well as process cooling, waste heat recovery and utilization in pharmaceutical, chemical, food, or thermal power industry etc. Our products are sold to more than 20 provinces, cities and autonomous regions domestically and are exported to over 20 countries and regions in Asia, Africa, Europe and South America.

Backed up by a team of qualified personnel and strong scientific research capabilities, the company is continuously committed to the research, application and promotion of integrated cross-disciplinary and interdisciplinary projects in HVAC and refrigeration areas. We have been firmly keeping up with innovative technologies, processes, materials and methods in global refrigeration, heating, ventilation, heat pump and relevant industries and have been granted more than 30 national invention patents and utility model patents successively. The company is a pioneer in evaporative water chillers in China and is the only manufacturer specializing in the manufacturing of both special section steel tube-type evaporative condensers and water chillers in China, which currently represents the highest standards of domestic evaporative water chillers. Our products have obtained ISO9001-2000 Quality Management System Certification, ISO 14001 Environmental Management System Certification, OSHA18001 Occupational Health and Safety Management System Certification, National Industrial Products Production License, National Energy Conservation Products Certification and Energy Conservation Certification for Innovative Construction Equipments in Shandong Province successively. The company has totally invested RMB 3 million in establishing a product performance testing center with the domestic advanced level to perform performance testing for various products, such as low temperature water chillers, other water chillers and water source heat pump units etc. in -35℃ cold water to 120℃ hot water, and the center has been granted the certification by the National Quality Supervision and Inspection Center for Compressor and Refrigeration Equipment.

The company covers an area of 45,000 square meters including the floor area of 22,000 square meters, with a registered capital of RMB 46.60 million and a total asset of over RMB 90 million. Currently, we have more than 180 staff members, among whom there are 3 members with a doctoral degree, 5 members with a master’s degree, and over 50 professional technicians with intermediate and senior titles. Moreover, we have been rated as an AA grade credit enterprise by banks, and now is the member of China Refrigeration and Air-Conditioning Industry Association and Shandong Association of Refrigeration.

2

Company Profile


1

Enterprise Honors


Model Code Explanation of the Low Temperature Chiller

The System Diagram of Low Temperature Water Chillers

Evaporative condenser

Evaporativecooling chiller

Terminal

Chilled watercirculating pump

Water cooled chiller

Cooling tower

Cooling watercirculating pump

Dry type, or flooded type if not represented

Leaving water

Evaporative cooling type

Cooling capacity of the chiller KW

Low temperature chiller


2

Product Introduction

OWCCL-G Series Economical and Practical Type Low Temperature Chillers

Main Features of the Chiller

Flooded specialized semi-hermitic double screw compressor of famous international brand is adopted, with no leaking, low noisy, slight vibration and stable performance, which can guarantee a long term safety stable operation

High Efficiency and Energy SavingThe unit can automatically adjust the energy output of each refrigerating compressor and turn on or turn off each

compressor according to the actual requirement and change of the site to ensure a high efficiency operation under low load, avoiding energy (electricity) waste and reducing the energy consumption cost.

Dry-type evaporator is adopted which was equipped with the newest type of internal thread high efficiency heat exchange tube, combining the optimized design of the baffle plate inside the shell, which can improve the heat exchange efficiency greatly. Furthermore, the dry-type evaporator is characterized by safety oil return, which can ensure the compressors operating with safety oil return without any external oil return devices.

Horizontal water cooled hell and tube heat exchanger and high efficiency screw thread heat exchange tube are adopted with high heat exchange efficiency and convenient water side cleaning.

Reliable Refrigerating Circuit The unit is designed with single compressor independent refrigerating system, and the two system of the double

compressor unit are independent, possessing flexibility in application and good backup characteristics.Famous international brand refrigerating accessories are adopted in refrigerating system, such as expansion

valve, magnetic valve. Famous international brand electrical components are adopted, such as AC contactor, air switch.

Advanced Computer Control System

Advanced micro computer control technology from HongKong Oceanair Industrial Company is adopted, which can provide complete control and protective functions. The LCD controller is in Chinese and easy to handle, and with friendly human and machine interface. The unit can be operated through the touch screen.

One-key startup & shutdown shortcut functionDisplaying the overall operation condition, parameter settings, alarms and records through the screen figuresAuto-timing operation as per the set program, such can be set by day (three phrases) or by weeks, then the

computer will control the units to operate automatically, realizing the unattended operation.It can automatically diagnose and display the faults and has the faults statistic function. The faults can be

inquired in three ways: fault code, fault times, fault occurring time.The computer controller of the unit has the coordinated control function with the chilled water pump and

cooling water pump, which can make the system operate more safely, reliably, and energy-saving, furthermore, the controller can manage the whole water system of the machine room so as to reduce the investment in hardware of the control system of the machine room.


3

Product overview

Remote monitoring can be realized through the installation of RS485 communication interface.

Perfect and Reliable Protective Function

The unit is equipped with perfect safety protective devices which can provide all-around safety protection.Default phase protection, anti-phase protection and overvoltage (under-voltage) protection to the power supply.Overheat protection, overload protection, anti-reverse protection, anti-frequent-start protection, exhaust gas

temperature overheat protection to the motor of the compressor.Protection for too low high-low voltage difference, too high high-voltage, too low low-voltage, startup delay,

too low water flow, too high (low) circulating water temperature, sensor faults and startup & shutdown code.

Multiple Choices of Refrigerant

R22 refrigerant is applied in standard unit, but other refrigerants such as R134a can also be applied according to customers’ requirements.

Easy to Install on Site

The evaporator and condenser are equipped with connecting pipe and flange, which make it easy to install on site.

Compact structure of the unit covers small areas.The direction of the pipe connector of the condenser can be changed from right to left and vice versa according

to the on-site requirements.The slight vibration makes the unit need no special vibration isolation measurements to be taken.The unit has pass strict test before leaving the factory, so you only need to connect the pipe, power, and fill

appropriate amount of refrigerant and conduct simple commissioning before it can be put to use.

Note:1. Nominal work condition stipulation: the leaving water temperature of the 43% ethylene glycol water solution is -10℃, and the water flow of the evaporator and condenser is calculated by 5℃ temperature difference. 2. The calcium chloride water solution can also be adopted as secondary refrigerant. If the customer wants to apply calcium chloride water solution, please notice in the order. 3. The ethylene glycol water solution can only be used in intermediate temperature brine unit as secondary refrigerant, while the calcium chloride water solution can be used both in intermediate and low temperature brine unit. 4. Besides the above specified product, our company can provide non-standard product according to customers’ requirement. 5. The dimension may change due to the technology improvement, so please ask for installation drawing.


4

Product overview

Technical Parameters of the OWCCL-G Series Low Temperature Chillers

Model OWCCL-G 50 70 95 120 150 190 250 290

Nominal refrigerating capacity KW 48.6 66.3 94.7 115.5 149.4 186.9 244.9 283.1

Kcal/h×104 4.18 5.70 8.14 9.93 12.85 16.07 21.06 24.35

Working medium R22

Compressor

Type Semi-hermetic screw compressor

Single set input power KW 19.6 25.8 35.5 43.2 53.0 66.9 86.4 98.9

Number Set 1

Power supply system 380V/3P/50Hz

Starting mode Y—△

Oil tank heater W 300

Evaporator

Type Shell and tube dry type

Secondary refrigerant Ethylene glycol water solution

Leaving water temperature ℃ -10

Chilled water flow m3/h 9.5 13.0 18.5 22.6 29.2 36.6 47.9 55.4

Resistance KPa ≤50

Standard pressure-bearing MPa 1.0

Scaling factor m2℃/ KW 0.018

Connecting pipe size(DN) mm 65 65 80 80 100 100 125 125

Condenser

Type Efficient shell and tube type

Entering water temperature ℃ 30

Cooling water flow m3/h 11.7 15.8 22.4 27.3 34.8 43.7 57.0 65.7





Oil separator Type Packing type

Safeguard High voltage, low voltage, oil pressure difference, low oil level, ultralow temperature, default phrase, anti-phrase and overload

Adjustable range of capacity % 33 startup 66,00 25startup 50,75,100

Weight of the unitNet weight Kg 790 910 1170 1430 1650 1860 2270 2430

Operating weight Kg 990 1130 1420 1650 1950 2180 2610 2780

Outline Dimensions

Length mm 2950 2950 2950 3150 3150 3450 3650 3750

Width mm 1100 1100 1130 1130 1150 1185 1185 1265

Height mm 1600 1600 1630 1630 1630 1660 1660 1680

5

Technical parameter


Technical Parameters of the OWCCL-G Series Low Temperature Chillers

Model OWCCL-G 320 370 410 490 520 610 740 870

Nominal refrigerating capacity KW 318.3 370.8 407.2 490 517.0 613.0 741.6 869.4

Kcal/h×104 27.37 31.89 35.02 42.14 44.46 52.72 63.78 74.77

Working medium R22

Compressor



Number Set 1 2



Oil tank heater W 300 300×2

Evaporator

Type Shell and tube dry type








Condenser







Connecting pipe size(DN) mm 125 150 150 150 150 200 200 200Oil

separator Type Packing type


Adjustable range of capacity % 25 startup,50,75,100 12.5 startup, progressive increased to100 by 12.5



Outline Demisions

Length mm 3850 4050 4250 4450 4450 4450 4850 4850

Width mm 1265 1300 1300 1350 1730 1730 1860 1980

Height mm 1680 1800 1800 1840 1850 1850 1990 1990

6

Technical parameter


OWCCL Series Energy-Saving Type Low Temperature Chillers


Flooded specialized semi-hermitic double screw compressor of famous international brand is adopted, the inserted oil separator of which is modified to obtain a better oil separation effect with no leaking, low noisy, slight vibration, stable performance, which can guarantee a long term safety stable operation.


compressor according to the actual requirement and change of the site to ensure the high efficiency operation under low load, avoiding energy (electricity) waste and reducing the energy consumption cost.

Flooded evaporator is adopted which is equipped with the latest flooded specialized external thread high efficiency heat exchange tube, improving the heat exchange efficiency greatly by about 15% comparing with dry –type evaporator; and special oil-trap devices is installed in the evaporator to enable the oil in the evaporator to return to the compressor intensively.

Horizontal water cooled shell and tube heat exchanger and high efficiency screw thread heat exchange tube are adopted with high heat exchange efficiency and convenient water side cleaning. A secondary oil separator is installed inside the units, which makes the unit obtain strong adaptability and high efficiency.

Reliable Refrigerating CircuitThe unit is designed with single compressor independent refrigerating system, and the two system of the double

compressor unit are independent, possessing flexibility in application and good backup characteristics.Famous international brand refrigerating accessories are adopted in refrigerating system, such as electronic

expansion valve, magnetic valve.Reliable oil-return device is adopted. The unit is designed with two-stage oil separator to minimize the oil

entering into the system, and efficient and accurate oil return jetting technology is applied to enable the oil entering into the evaporator to return to the compressor intensively, guaranteeing a reliable and efficient operation.

Famous international brand electrical components are adopted, such as AC contactor, air switch.





inquired in three ways: fault code, fault times, fault occurring time.


7

Product overview

The computer controller of the unit has the coordinated control function with the chilled water pump and cooling water pump, which can make the system operate more safely, reliably, and energy-saving, furthermore, the controller can manage the whole water system of the machine room so as to reduce the investment in hardware of the control system of the machine room.




temperature overheat protection to the motor of the compressor.Protection for too low high-low voltage difference, too high high-voltage, too low low-voltage, startup delay,

too low water flow, too high (low) circulating water temperature, sensor faults and startup & shutdown code


R22 refrigerant is applied in standard unit, but other environmental friendly refrigerants such as R134a can also be applied according to customers’ requirements.






Note:1.Nominal work condition stipulation: the leaving water temperature of the 41% ethylene glycol water solution is -10℃, and the water flow of the evaporator and condenser is calculated by 5℃ temperature difference. 2. The calcium chloride water solution can also be adopted as secondary refrigerant. If the customer wants to apply calcium chloride water solution, please notice in the order. 3. The ethylene glycol water solution can only be used in intermediate temperature brine unit as secondary refrigerant, while the calcium chloride water solution can be used both in intermediate and low temperature brine unit. 4. Besides the above specified product, our company can provide non-standard product according to customers’ requirement. 5. The dimension may change due to the technology improvement, so please ask for installation drawing.


8

Product overview

Technical Parameters of the OWCCL Series Low Temperature Chillers

Model 　 OWCCL- 140 160 190 230 280 340 410 480

Nominal refrigerating capacity KW 138.5 163.2 188.6 224.8 282.4 334.9 405 474.9

Kcal/h×104 11.91 14.04 16.22 19.33 24.29 28.80 34.83 40.84

Working medium R22

Compressor



Number set 1


starting mode Y—△


Evaporator

type Shell and tube flooded type








Condenser









Adjustable range of capacity % 25 startup,50,75,100



Outline Dimensions

Length mm 3350 3350 3450 3450 3650 3850 4450 4450

Width mm 1350 1350 1380 1380 1380 1380 1430 1510

Height mm 1820 1820 1820 1870 1950 1950 2020 2100

9

Technical parameter



Model 　OWCCL- 570 620 670 700 810 890 950 1110


Kcal/h×104 48.57 53.18 57.60 59.82 69.66 76.51 81.68 92.05

Working medium R22

Compressor

Type Semi-hermetic screw compressorSingle set

input power KW 92.9 100.6 108.3 111.8 128.8 142.9 151.7 170.6

Number set 2



Oil tank heater W 300×2

Evaporator

Type Shell and tube flooded type








Condenser








SafeguardHigh voltage, low voltage, oil pressure difference, low oil level,

ultralow temperature, default phrase, anti-phrase and overload

Adjustable range of capacity % 12.5 startup, progressive increased to100 by 12.5



Outline Dimensions

Length mm 4720 4720 4720 4720 4920 4920 4920 4920

Width mm 1560 1630 1630 1650 1670 1670 1750 1840

Height mm 2070 2120 2120 2120 2200 2200 2200 2250

10

Technical parameter



Model 　OWCCL- 1200 1340 1540 1780

Nominal refrigerating capacity KW 1199.2 1342.8 1535.8 1781.4

Kcal/h×104 103.13 115.48 132.08 153.20

Working medium R22

Compressor


Single set input power KW 197.6 218.0 245.5 283.4

Number set 2

Power supply system 380V（10KV）/3P/50Hz



Evaporator




Chilled water flow m3/h 234.7 262.8 300.6 348.7




Connecting pipe size(DN) mm 250 250 250 250

Condenser



Cooling water flow m3/h 274.2 306.0 348.6 403.9







Weight of the unit Net weight Kg 8860 9270 11060 11950

Operating weight Kg 10170 10960 12260 13160

Outline Dimensions

Length mm 5230 5230 5430 5430

Width mm 1580 1580 1670 1670

Height mm 2160 2160 2280 2280

11

Technical parameter


OWCCL –Z Series High Efficiency and Energy-Saving TypeLow Temperature Chillers


Flooded specialized semi-hermitic double screw compressor of famous international brand is adopted, the inserted oil separator of which is modified to obtain a better oil separation effect with no leaking, low noisy, slight vibration, stable performance, which can guarantee a long term safety stable operation.



Flooded evaporator is adopted which is equipped with the latest flooded specialized external thread high efficiency heat exchange tube, improving the heat exchange efficiency greatly by about 15% comparing with dry –type evaporator; and special oil-trap devices is installed in the evaporator to enable the oil in the evaporator to return to the compressor intensively.

A high efficiency external oil separator is adopted to carry out secondary oil separation, which makes the unit obtain strong adaptability and high efficiency.

Evaporate condenser and high efficient ellipse section tube are adopted. The proper designed sprinkling system enable the forming of uniform water films around the surface of the condenser tubes, achieving a high heat exchange efficiency. The complex cooling water system can be avoided from the water cooled condenser.


compressor unit share the high pressure, which can save the initial investment and can improve the energy efficiency under partial load condition.

Famous international brand refrigerating accessories are adopted in refrigerating system, such as expansion valve, magnetic valve.

Reliable oil-return device is adopted. The unit is designed with two-stage oil separator to minimize the oil entering into the system, and efficient and accurate oil return jetting technology is applied to enable the oil entering into the evaporator to return to the compressor intensively, guaranteeing a reliable and efficient operation.

Famous international brand electrical components are adopted, such as AC contactor, air switch. Advanced Computer Control System






12

Product overview


Remote monitoring can be realized through the installation of RS485 communication interface. Perfect and Reliable Protective Function


temperature overheat protection to the motor of the compressor.Protection for too low high-low voltage difference, too high high-voltage, too low low-voltage, start-up delay,

too low water flow, too high (low) circulating water temperature, sensor faults and startup & shutdown code Multiple Choices of Refrigerant

R22 refrigerant is applied in standard unit, but other environmental friendly refrigerants such as R134a can also be applied according to customers’ requirements.






Note:1.Nominal work condition stipulation: the leaving water temperature of the 41% ethylene glycol water solution is -10℃, and the water flow of the evaporator and condenser is calculated by 5℃ temperature difference. The dry bulb temperature of design condition of the evaporative condenser is 35℃ and the wet bulb temperature is 24℃, for the details please ask for the sample of the evaporative condenser. The weight of the unit does not include the weight of the evaporative condenser.

2. The calcium chloride water solution can also be adopted as secondary refrigerant. If the customer wants to apply calcium chloride water solution, please notice in the order.

3. The ethylene glycol water solution can only be used in intermediate temperature brine unit as secondary refrigerant, while the calcium chloride water solution can be used both in intermediate and low temperature brine unit.

4. Besides the above specified product, our company can provide non-standard product according to customers’ requirement.

5. The dimension may change due to the technology improvement, so please ask for installation drawing.


13

Product overview

Technical Parameters of the OWCCL-Z Series Low Temperature Chillers

Model OWCCL-Z 150 180 230 280 320 360 420 500


Kcal/h×104 12.38 15.40 20.08 23.90 27.63 31.07 36.19 42.43

working medium R22

Compressor



Number set 1




Evaporator









Condenser

Type Evaporative

Model OZNX- F 300 400 500 600 600 700 900 900

Number Set 1

FanPower KW 0.75 0.75 1.5 1.5 1.5 2.2 2.2 2.2

Number Set 2 2 2 2 2 2 2 2

PumpPower KW 1.1 1.1 2.2 2.2 2.2 2.2 3.0 3.0

Number Set 1 1 1 1 1 1 1 1

Make-up water volume m3/h 0.2-0.7 0.3-1.1 0.5-1.9 0.6-2.1 0.6-2.1 0.7-2.3 0.7-2.8 0.7-2.8

Oil Separator Type Packing type


Adjustable range of capacity % 25 startup, 50,75,100

Weight of the unit Net weight Kg 1580 1690 1830 2110 2310 2790 3350 3700


Outline Dimensions

Length mm 3110 3110 3210 3210 3410 3610 4210 4210

Width mm 1100 1160 1210 1280 1280 1280 1220 1280

Height mm 1720 1820 1860 1950 1950 1950 2020 2100

14

Technical parameter



Model OWCCL-Z 590 640 700 720 840 920 990 1110


Kcal/h×104 50.46 55.26 59.84 62.14 72.38 79.48 84.86 95.65

Working medium R22

Compressor

Type 　 Semi-hermetic screw compressor

Single set input power KW 88.2 95.5 102.8 106.1 122.3 135.6 144 162

Number Set 2




Evaporator









Condenser

Type Evaporative condenser

Model OZNX- F 1200 1200 1500 1500 1800 1800 2000 2400

Number Set 1

FanPower KW 3.0 3.0 4.0 4.0 3.0 3.0 4.0 4.0

Number Set 2 2 2 2 3 3 2 3

PumpPower KW 4.0 4.0 5.5 5.5 7.5 7.5 7.5 7.5

Number Set 1 1 1 1 1 1 1 1

Make-up water volume m3/h 1.0-3.1 1.0-3.1 1.1-4.7 1.1-4.7 1.5-5.5 1.5-5.5 1.7-6.1 1.7-6.1




Weight of the unit Net weight Kg 4750 5030 5220 5410 5800 6280 6600 7110Operating

weight Kg 5040 5320 5510 5710 6110 6590 6910 7430

DimensionLength mm 4480 4480 4480 4480 4680 4680 4680 4680

Width mm 1600 1680 1680 1730 1750 1750 1880 1900

Height mm 2070 2120 2120 2120 2200 2200 2200 2250

15

Technical parameter



Model OWCCL-Z 1240 1390 1600 1850

Nominal refrigerating capacity KW 1245.4 1394.4 1595.0 1849.8

Kcal/h×104 107.10 119.92 137.17 159.08

Working medium R22

Compressor


Single set input power KW 187.4 206.8 232.9 268.9

Number Set 2

Power supply system 380V（10KV）/3P/50Hz



Evaporator




Chilled water flow m3/h 243.8 272.9 312.2 362.1





Condenser

Type Evaporative type

Model OZNX- F 2400 1500 1500 1800

Number Set 1 2

FanPower KW 4.0 4.0 4.0 3.0

Number Set 3 2 2 3

PumpPower KW 7.5 5.5 5.5 7.5

Number Set 1 1 1 1

Make-up water volume m3/h 1.7-6.1 1.1-4.7 1.1-4.7 1.5-5.5




Weight of the unit Net weight Kg 8360 8570 10260 11150

Operating weight Kg 9270 9960 11260 12160

Dimension

Length mm 5230 5230 5430 5430

Width mm 1530 1530 1610 1610

Height mm 2160 2160 2280 2280

16

Technical parameter


OWCCL-D Series Low Temperature Chillers


Low temperature type semi-hermitic double screw compressor of famous international brand is adopted, with no leaking, low noisy, slight vibration, stable performance, which can guarantee a long term safety stable operation.



Dry-type evaporator is adopted which was equipped with the newest type of internal thread high efficiency heat exchange tube, combining the optimized design of the baffle plate inside the shell, which can improve the heat exchange efficiency greatly. Furthermore, the dry-type evaporator is characterized by safety oil return, which can ensure the compressors operating with safety oil return without any external oil return devices.

Horizontal water cooled hell and tube heat exchanger and high efficiency screw thread heat exchange tube are adopted with high heat exchange efficiency and convenient water side cleaning.


compressor unit are independent, possessing flexibility in application and good backup characteristics.Famous international brand refrigerating accessories are adopted in refrigerating system, such as expansion

valve, magnetic valve.Famous international brand electrical components are adopted, such as AC contactor, air switch.









The unit is equipped with perfect safety protective devices which can provide all-around safety protection.


17

Product overview

Default phase protection, anti-phase protection and overvoltage (under-voltage) protection to the power supply.Overheat protection, overload protection, anti-reverse protection, anti-frequent-start protection, exhaust gas

temperature overheat protection to the motor of the compressor.Protection for too low high-low voltage difference, too high high-voltage, too low low-voltage, start-up delay,

too low water flow, too high (low) circulating water temperature, sensor faults and startup & shutdown code.


R22 refrigerant is applied in standard unit, but other refrigerants can also be applied according to customers’ requirements.






Note: 1. In accordance with nominal working conditions: water flow in evaporator and condenser is calculated by 5℃ temperature difference

2. Expect for the said specifications, our company also provides non-standard products in accordance with customers’ requirements.

3. Because of technological improvement, exterior dimensions may change, please ask for installation drawing.


18

Product overview

Technical Parameters of the OWCCL-D Series Low Temperature Chillers

Model OWCCL- D 60 120 240 360Nominal refrigerating capacity KW 58.5 116.2 232.4 358.4

Single set input power KW 67.7 113.4 113.4 159.6Working medium R22

Compressor

Type Semi-hermetic screw compressorSingle set installed power KW 88 160 160 207

Number Set 1 2Starting mode Y—△

Starting current A 263 545 545 749Maximum operating current A 191 335 670 888


Evaporator

Type Shell and tube dry type Leaving water temperature ℃ -35

Refrigerant Calcium chloride water solution 29.4% (mass fraction) Chilled water flow m3/h 12.5 24.8 49.6 111.6

Resistance KPa ≤60Scaling factor of water m2·K/KW 0.018

Standard pressure-bearing MPa 1.0 Connecting pipe size(DN) mm DN65 DN 100 DN125 DN150

Condenser

Type Efficient shell and tube type Entering water

temperature ℃ 30

Cooling water flow m3/h 21.7 39.5 79 170.2Resistance KPa ≤80

Scaling factor of water m2·K/KW 0.044Standard pressure-bearing MPa 1.0Connecting pipe size(DN) mm DN65 DN100 DN125 DN150

Oil cooler

Type Stainless steel brazed plate heat exchangeEntering water temperature ℃ 30

Cooling water flow m3/h 6.40 10.2 20.4 27.6Connecting pipe size(DN) mm DN40 DN 50 DN 65 DN 80

Water side resistance KPa ≤50Scaling factor m2·K/KW 0.044

Economizer Type Stainless steel brazed plate heat exchange


Adjustable range of capacity % 25 startup, 50, 75, 100 12.5 startup, progressively increase to 100 by 12.5

Weight of the unit

Net weight Kg 1332 2010 2700 4960Operating weight Kg 1472 2230 3030 5300

Dimension L×W×H mm 2700×1300×1550 2910×1400×1685 4560×1500×1785 4600×1700×1935

19

Technical parameter


Variable Working Condition Correction Factor of Low Temperature Chiller with Dry Type Evaporator

Variable Working Condition Correction Factor of Low Temperature Chiller with Flooded Type Evaporator

Variable Working Condition Correction Factor of Low Temperature Chiller with Evaporative Condenser and Flooded Evaporator

Leaving water temperature of evaporator℃ 0 -5 -10 -15 -20

Leaving

water

temperature

of condenser

℃

30Refrigerating capacity 1.58 1.30 1.07 0.87 0.70

power 1.01 0.96 0.92 0.89 0.85


power 1.04 0.99 0.95 0.92 0.88


power 1.09 1.04 1.0 0.97 0.93


power 1.13 1.08 1.04 1.01 0.97


Leaving water temperature of condenser

℃


power 1.01 0.96 0.92 0.89 0.85


power 1.04 0.99 0.95 0.92 0.88


power 1.09 1.05 1.0 0.97 0.93


power 1.13 1.08 1.04 1.01 0.97


Environment

temperature℃


power 0.93 0.89 0.85 0.81 0.77


power 1.01 0.96 0.92 0.88 0.84


power 1.09 1.04 1.00 0.96 0.92


power 1.12 1.09 1.05 1.02 0.98


20

Correction Factor

Reservedcentre hole

Reservedcentre hole

Ground

Ground

Depth

Depth

Unit foundation

Unit foundation

Outside Drawing of Dry Type Single Head Unit

Outside Drawing of Dry Type Double Head Unit

Specification and Dimension of OWCC-G Series Water Chiller

OWCCL 50G 70G 90G 120G 150G 190G 250G 290G 320G 370G 410G 490G 520G 610G 740G 870G

A 360 360 380 380 420 450 450 450 510 510 510 510 450 450 510 510

E 2030 2030 2030 2230 2230 2530 2730 2830 2930 3130 3330 3530 3530 3530 3930 3930

G 445 445 470 470 495 495 495 515 515 515 515 540 570 570 600 600

F 200 200 200 200 200 200 200 200 200 200 200 300 300 300 300 300

D 575 575 625 625 665 665 665 710 710 750 750 800 860 860 920 920

M 640 670 750 750 800 830 830 830 950 1010 1010 1050 1110 1160 1260 1300

N 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150

21

Outline dimensions


Reservedcentre hole

Ground

Depth

Unit foundation

Reservedcentre hole

Ground

Depth

Unit foundation

Outside Drawing of Flooded Type Single Head Unit

Outside Drawing of the Flooded Type Double Head Unit

OWCCL 140 160 190 230 280 340 410 480 540 570 620 700 810 890 950 1100

A 260 260 260 260 260 260 730 730 730 780 780 780 820 820 820 820

E 2430 2430 2530 2530 2730 2930 3530 3530 3530 3800 3800 3800 4000 4000 4000 4000

G 140 140 150 150 150 150 150 160 160 160 165 165 165 165 165 165

F 280 280 300 300 300 300 300 330 330 330 350 350 380 380 380 410

D 550 550 600 600 630 630 600 630 630 670 700 700 730 730 730 750

M 980 980 1030 1030 1080 1080 1030 1130 1130 1180 1280 1280 1330 1330 1380 1430

N 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200

B 480 450 480 480 500 530 530 550 550 550 570 570 600 600 600 630

C 280 280 300 300 300 300 330 350 370 370 390 390 400 400 400 420

22

Outline dimensions


Reservedcentre hole

Ground

Depth

Unit foundation

Reservedcentre hole

Ground

Depth

Unit foundation

LEA

D

F

NMW

G

H

Outside Drawing of Evaporative Single Head Unit

Outside Drawing of Evaporative Double Head Unit

OWCCL- 150Z 180Z 230Z 280Z 320Z 360Z 420Z 500Z 560Z 590Z 640Z 720Z 840Z 920Z 990Z 1110Z

A 260 260 260 260 260 260 730 730 730 780 780 780 820 820 820 820

E 2430 2430 2530 2530 2730 2930 3530 3530 3530 3800 3800 3800 4000 4000 4000 4000

G 140 140 150 150 150 150 150 160 160 160 165 165 165 165 165 165

F 280 280 300 300 300 300 300 330 330 330 350 350 380 380 380 410

D 550 550 600 600 630 630 600 630 630 670 700 700 730 730 730 750

M 840 840 930 930 930 930 930 1000 1000 1040 1100 1100 1180 1180 1180 1180

N 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200

23

Outline dimensions


Project Case Analysis and Comparison

For example, there is a need of 700KW cooling load, and we choose OWCCL-G、OWCCL、OWCCL-Z to make a comparison:

Parameter comparison for model selection：

Initial Investment Comparison

SchemeScheme 1 Scheme 2 Scheme 3

OWCCL-740G OWCCL-700 OWCCL-720Z

Cooling capacity 741.6 KW 695.6KW 722.6KW

Quantity of the principal machine One set One set One set

Specification of the principal machine Q=741.6KW，P=253.2KW Q=695.6KW，P=223.6KW Q=722.6KW，

P=212.2+5.5+8=225.7KW

Cooling water system Cooling water pump（18.5）+Tower fan（7.5）=26KW

Cooling water pump（18.5）+Tower fan（7.5）=26KW

(Included in the principal machine)

Chilled water system and terminals Identical Identical Identical

Total power 253.2+26=279.2KW 223.6+26=249.6KW principal machine225.7KW

Energy efficiency ratio EER=741.6/279.2=2.66 EER=695.6/249.6=2.79 EER=722.6/225.7=3.20



Chiller price 664,000 Yuan 688,000 Yuan 825,600 Yuan

Price comparison Surpass scheme one by 24000 Yuan

Surpass scheme one by 161,600 Yuan, and scheme two by 137,600

Yuan

Cooling tower 36,000 Yuan 36,000 Yuan None

Cooling water pump 9000 Yuan 9000Yuan None

Cooling water pipeline, valve, instruments and construction

30,000-50,000 Yuan(depending on the length of the

pipeline)

30,000-50,000 Yuan(depending on the length of the

pipeline)None

Chilled water system and terminals Identical Identical Identical

Power distribution investment Highest Second Lowest

Comprehensive initial investment comparison(exclude

the chilled water system and terminal)

0More initial investment

than scheme1:24,000(power distribution excluded)

More initial investment than scheme 1: 137600-36000-9000-

30000（50000）=62600（42600）Yuan(power

distribution excluded)

Operation Electric Charge Comparison



Annual electric charge of the Refrigerating

unit(including the cooling water)

279.2*300*20＝1,675,200KW(calculation conditions:300

days operation annual and 20 hours operation daily )

249.6*300*20＝1,497,600KW(calculation

conditions:300 days operation annual and 20 hours operation daily)

225.7*300*20＝1,354,200KW(calculation conditions:300 days operation

annual and 20 hours operation daily)

Annual electric charge

1,675,200KW×1.0 Yuan=1,675,200 Yuan

(The electricity price is 1.0 Yuan/ kw.h )

1,497,600KW×1.0 Yuan=1,497,600 Yuan(The electricity price is 1.0 Yuan/ kw.h )

1,354,200KW×1.0 Yuan=1,354,200 Yuan(The electricity price is 1.0 Yuan/ kw.h )

Annual saved electric charge 0

The money saved comparing with scheme 1: 1,675,200-

1,497,600=177,600 Yuan (Energy saving rate: 11.86%)

The money saved comparing with scheme 2: 1,497,600-1,354,200=143,400 Yuan (Energy

saving rate: 10.59%)The money saved comparing with scheme 1:1,675,200-1,354,200=321,000 Yuan (Energy

saving rate: 23.7%)


24

Analysis and Comparison

Operation Electric Charge Comparison

Scheme OWCCL-740G OWCCL-700 OWCCL-720Z

Whether Refrigerating machine room is

needed?

Special Refrigerating machine room is needed



Environmental protection properties

The cooling tower will produce “water flying” and noise pollution to the surroundings and additional the cooling water pumps produce

more noise.

The cooling tower will produce “water flying” and noise pollution to the surroundings and additional the cooling water pumps produce

more noise.

There is no “water flying” pollution or noise pollution, and the noise level is low without the use of high power

cooling water pump.

System installation

Complicated. The cooling water system has to be installed on site by the construction teams with a lot of

time and high cost. Welding slag and other foreign materials may be left in the cooling water system, affecting the normal operation of the system.

Complicated. The cooling water system has to be installed on site by the construction teams with a lot of

time and high cost. Welding slag and other foreign materials may be left in the cooling water system, affecting the normal operation of the system.

Easy. The installation is easy, excluding the installation and

commissioning of the cooling water system(cooling tower, cooling water pump, pipelines, valves, instruments)

System working condition and service

life.

The service life of the principal machine is about 15 years, and the service life of the cooling tower is

about 10-15 years.

The service life of the principal machine is about 15 years, and the service life of the cooling tower is

about 10-15 years.

The adopted evaporation condensation technology makes the system work stably. The service life of the anti-corrosion high-thermal

conductivity evaporative condenser is up to 15-20 years.

The maintenance of the cooling system

It is easy for the cooling tower to form scale and breed moss and algae which can only be cleaned by chemical that will corrode the

equipments and shorten the service life. A large sum of maintenance

cleaning fee will be cost every year.

It is easy for the cooling tower to form scale and breed moss and algae which can only be cleaned by chemical that will corrode the

equipments and shorten the service life. A large sum of maintenance

cleaning fee will be cost every year.

The evaporative condenser with strong antiseptic treatment is

adopted with a strong anti-scaling property and is easy to clean and

maintain.

After-sale service

The system includes many parts from various of suppliers, which makes the after-sale service relationship

relatively complicated

The system includes many parts from various of suppliers, which makes the after-sale service relationship

relatively complicated

The system is supplied by a sole supplier, which makes the after-sale

service very convenient.

Scheme Summary

After an overall evaluation of the above three schemes, the OWCCL-720Z refrigerating system is adopted as the principal machine, the advantages of which are:

1. The evaporative condensation technology is adopted. The condensing pressure of the unit is low, which decrease the input power of the compressor. The cooling tower and cooling water pump are not needed, reducing the power of mating equipment. All of these improve the energy efficiency ratio of the cooling system and make the system energy-saving.

2. The initial investment is a little larger than that of the OWCCL-740G、OWCCL-700 but the saved operation electric charge is obvious.

Through the comparison of the above schemes, we can see the cooling system adopting the evaporative low temperature cold water unit saves a lot of operating cost, and is the optimal scheme.

Electric charge saved in 15 years 0 The money saved comparing with

scheme 1: 177,600*15=2,664,000 Yuan

The money saved comparing with scheme 2:143,400*15=2,151,000 Yuan

The money saved comparing with scheme 1:321,000*15=4,815,000Yuan


25

Analysis and Comparison

The Installation Foundation and Fixation

The unit should be installed on solid, strong and flat concrete foundation or steel frame, and the strength of the installation platform must be sufficient to support the weight of the unit. If the strength is insufficient, vibrations and noises may occur.

The unit base must be so designed that it will not sink. For base dimensions, please refer to the unit base dimension figure (refer to unit dimension parameter table for B and M) .The surface of the concrete base is normally leveled by cement and treated with waterproofing work. The surrounding area of the base platform should be designed with drainage ditch, the gradient of which should be greater than 0.5%, and the slope direction is inclined to the outfall.

Machine Room Design and Construction Summary

1. Machine Room　　　　　　　　　　　　　　　　　　　　　　　　　

For convenient operation and maintenance, the main operative interface should have 1-1.5 m space.In the process of operation, the exhaust side and exhaust pipe of the compressor as well as the shell of the

condenser will release heat to the environment as their temperature are higher than that of the environment, thus makes the temperature of the machine room keep rising, worsening the work condition of the unit and the operators, so the machine room have to be equipped with ventilation equipment to make sure the temperature does not go above 35℃。

The machine room should have sound insulation to prevent noisy effect to the environment, if possible, sound absorption structures can be installed to the machine room, what’s more, the main machine and the water pump should not be installed in the same room.

2.Handling of the Unit

Unloading and hoisting must be carried out by hoisting personnel with rich experience.The support feet of the hoist must be stable and will not sink in the hoisting process. Hoisting tools must be

checked before hoisting to make sure breakage or disconnection will not happen. Single steel wire rope should not be used to hoist the unit. Stop for a moment when the unit is hoisted to 20mm above the ground or the surface of the carriage, check carefully to make sure it is safe, and then go on hoisting.

Operate carefully in the process of hoist to avoid damage the equipment. Cushion block should be placed in the contact area between the hoist rope and the unit. For heavy unit, supporting bars should be added to the sling above the unit to reduce the pressure from the sling to the unit.

The unit must be slowly landed to the ground, without any impact to the ground, lest the unit will be harmed.In the process of construction of the machine room, the unit should be prevented from damage from falling

object, and the insulating coat and painting coat should be prevented from scratch. Do not stand or step on the unit.

3.Water System Pipeline

All the outside pipelines of the unit should be supported by holders or hanging brackets, and should not be supported by the unit.

When the static pressure of the water system goes above 30 meters, the water pump should be placed on the


26

Construction Summary

water entering side of the unit to reduce the unnecessary pressure to the unit.The entrance side of the unit should be installed with filters no less than 40 mesh (stainless steel filter screen),

the location must make it easy for disassembly.The chilled water pipe must be of thermal insulation to avoid loss of Refrigerating capacity and the forming of

condensation water. The thermal insulated pad or wood pad with antiseptic treatment should be placed between the insulated pipeline and the supporting and hanging bracket.

Automatic or manual air release valve should be fixed at the highest point of the chilled water system;The elastic connection must be made between the pipeline and the pump. The pipeline of the system must pass

strict scrubbing and pressure test.Water segregator, water collector and water pressure balance valve must be installed when multiple units are in

parallel connection.For design of the pipeline please refer to the Design Hand Book of Air Conditioning Planning; for engineering

construction and acceptance, please refer to GB50243—1997 Engineering Construction and Acceptance Standards for Ventilation and Air-conditioning Project.

4.Water Quality Standard

Preparation of the refrigerant water1. For the preparation of ethylene glycol water solution, the ethylene glycol should be specified as the high

quality product in GB4649 Ethylene Glycol for Industrial Use, and the water should meet the requirements in the GB50050 Standards of Industrial Recycling Cooling Water Treatment. The ethylene glycol water solution concentration should meet the requirements. The solution can also be prepared by “Refrigerating air condition dedicated ethylene glycol”. For the preparation of calcium chloride water solution, the calcium chloride dihydrate should be chose as specified as the top quality product in HG/T23279 Calcium Chloride for Industrial Use, and the water should meet the requirements in the GB50050 Treatment Standard of Industrial Recycling Cooling Water. The calcium chloride water solution concentration should meet the requirements.

2. Some foreign materials are included in the ethylene glycol water solution and the calcium chloride water solution, which makes the solution obtain a certain corrosivity. When putting it into use, please add corresponding corrosion inhibitor and scale inhibitor according to the water quality testing result. The inhibitor should also meet the requirements of the water quality in cooling process.

The refrigerant water needs complete water quality analysis regularly. The sampling interval should be determined by the actual water quality condition. The PH of the water solution is 7.5-8.5 and the reserved alkalinity is 16-21;

The ethylene glycol and calcium chloride is poisonous, so please be careful to use ethylene glycol water solution or calcium chloride as refrigerant brine, avoiding leakage, overflowing, splashing or contact with cloth and skin.


27


Thermo-physical properties inquiry table of calcium chloride water solution

Thermo-physical properties inquiry table of ethylene glycol water solution

Concentration(quality percentage %) 9.4 14.7 18.9 20.9 23.8 25.7 27.5 28.5 29.4 29.9

Freezing point（℃） -5.2 -10.2 -15.7 -19.2 -25.7 -31.2 -38.6 -43.6 -50.1 -55

Density in 15℃ 1080 1130 1170 1190 1220 1240 1260 1270 1280 1286

5.Power Supply

The power line and control line should be matched according to the requirements, and the connection should be made according to the electrical connection diagram (operation manual). The unit must have good ground lead. Electric shock accident may happen because of imperfect earth.

Concentration(quality percentage %) 10 15 20 25 30 33 38 41 43 46 49

Freezing point（℃） -3.2 -5.4 -7.8 -10.7 -14.1 -16.2 -20.3 -23.2 -25.3 -28.8 -32.6

Density in 15℃ 1012 1021 1028 1036 1044 1047 1055 1060 1062 1067 1070


28


Ordering Instruction

1.Shipment

The dry type and flooded type unit is shipped as a whole, while the evaporative cooled flooded type unit can be separated into evaporative condenser, unit part and connection pipeline to be shipped separately. If limited by the passageway of the machine room, the dry type and flooded type unit can be divided into evaporator, condenser, compressor and electric cabinet to be shipped separately. After their arriving at the customer’s machine room, our company’ assembling personnel will carry out the assembling with the cooperation from customer in water, electricity and tool supply.

2.Transportation

The transport and insurance can be managed by our company for the customer. If the customers would like to do transport by themselves, please discus with our company in advance to identify the size and number of vehicles.

3.Delivery and Construction Range

tems Our company Customers Notes

Unit

Unit body ○ Including compressor, evaporator, condenser, control panel,

Thermal insulation of evaporator ○

Refrigerant ○ On site filling

Cold water/cooling water flow valve ○

TestOperation manual ○

Leaving factory performance test ○

Transport and

installation

Customer on site commissioning ○ ○

From factory to construction site ○

Foundation construction project ○

From construction site to unit foundation ○

Unit pipeline connection ○

Electrical wiring

Unit installation ○ Main power supply connection

Unit electrical wiring ○

System water temperature sensor wiring ○ Temperature sensor attached to the unit

Unit linkage wiring ○

Others

On site installation of water and electricity supply ○

On site commissioning of water and electricity supply ○

Note: ○ represents the party that is responsible for construction or the provider Maintenance

The maintenance must be carried out by trained and experienced personnel. The protector and controller components have to be checked carefully before the restart of the unit to guarantee a normal system.

In order to maintain a excellent and reliable performance, please carry out correct and regular maintenanceThe heat exchanger will form scale after long term use, which will affect the performance of the unit, so please

clean the heat exchanger regularly according to the conditions.The unit will not be in use for a long term in the winter, so the water in the water system (including the unit)

must be drained completely to avoid water freeze and pipeline crack when the temperature goes under zero degree.


29

Ordering Instruction

Documents

Technical Manual of Oceanair Refrigeration and Air ...resource-jn.jerei.com/40025/16060610262938_0.pdf · Technical Manual of Oceanair Refrigeration and Air-Conditioning Series Products