Organic Rankine Cycle Power Systems

Organic Rankine Cycle Power Systems

Converting Low Grade Heat into Power

Organic Rankine Cycle (ORC) In virtue of using low boiling-point working fluid, an ORC, which is composed of working fluid

pump, evaporator, expander, generator, and condenser, converts a wide variety of low grade

heat into power. ORCs are the extremely efficient and economical approaches to harness

industrial waste heat, geothermal heat, biomass, solar heat, etc. for power generation.

ORC Salient Advantages

Most efficient approach to convert low grade heat into power.

Simple structure with high reliability, stability and less maintenance required.

Working fluid circuits in a closed loop, the product life time is greater than 20 years.

Applications Categories

Industrial waste heat: hot water, hot oil, low pressure steam, flue gas, etc.

Industry: steel, chemistry, petroleum, paper, cement, fabrics, food, glass, etc.

Renewable: geothermal heat, hot spring, biomass, solar heat, OTEC, etc.

ORC Features HanPower and Hanbell (the parent company of HanPower, the largest screw-compressor

manufacture in Asia) have been dedicated on developing a series of hermetic type

screw-expanders and turbines for ORC engine cores. Their power classes are ranged from

10kW to 1,500kW. Due to the hermetic configuration, the ORC expander genset owns high

mechanical efficiency and stability, low vibration level and noise, and no seal leak-off problem.

Semi-Hermetic Expander Genset with No Seal Leak-off Problem

No working fluid leak-off problem: a mechanical seal is not necessary.

No misalignment and vibration problem: a coupling is not necessary.

No cooling fan for generator: the generator efficiency is further improved.

Low maintenance required and long product service time (greater than 20 years).

Screw Expander Genset

Power Classes: series products, ranged from 10kW to 300kW

Rotor RPM measurement Paten (Paten No.: M413760, M413857)

Oil-injected lubrication system, robust rotor-bearing system with high reliability

Rotor of Twin Screw Expander ORC Screw-Expander Genset

Turbine Genset

Power Classes: series products, ranged from 150kW to 1,500kW

Exclusively ORC axial turbines with 8,000RPM, 9,000RPM and 12,000RPM

Build-in lubrication system, robust rotor-bearing system, reduction gear.

Axial Turbines ORC Turbine Genset

Automated Control System

Following the variations of heat sink and heat source, maximize power output.

Wide operating range (10%~120%), maximize operating availability.

ORC Specifications

Customized ORCs

According to parameters of heat sink and heat source, we provide customized ORC

systems and units to exploit the waste heat and to achieve most economic effect.

With ORC series products, the power classes ranged from 10kW to 1,500kW.

Heat Source and Temperature

Heat Source Hot Water Hot Oil Steam Flue Gas

Temperature ≧80˚C ≧80˚C ≧70˚C ≧120˚C

ORC Specifications Using Flue Gas

Flue Gas Temp.＝380℃/140℃, Cooling Water Temp.＝25℃/31℃

Screw Type ORC(*)

Turbine Type ORC(**)

Net Power Output (kW)(***)

50 100 150 200 250 300 600 900 1,200

Flue Gas Flow (Nm3/h) 6,500 12,900 19,300 25,500 31,900 33,400 66,500 99,600 132,800

Cooling Water Flow (T/h) 72 142 212 280 350 367 731 1,095 1,460

*: Using semi-hermetic screw expander ORC, applied for 50Hz or 60Hz generator, 380V~480V, 3.3kV, 6.6kV, 10kV, 11.4kV.

**: Using semi-hermetic turbine expander ORC, applied for 50Hz or 60Hz generator, 380V~480V, 3.3kV, 6.6kV, 10kV, 11.4kV.

***: Net power：the power made after both the working fluid pump and oil pump power are deducted from the gross power.

ORC Specifications

ORC Specifications on Using Steam

Steam Temp.＝120℃/95℃, Cooling Water Temp.＝25℃/31℃

Screw Type ORC(*)



50 100 150 200 250 300 600 900 1,200

Steam Flow (T/h) 0.90 1.80 2.60 3.40 4.20 4.26 8.50 12.70 16.90


ORC Specifications on Using High Temperature Hot Water

Hot Water Temp.＝140℃/100℃, Cooling Water Temp.＝25℃/31℃

Screw Type ORC(*)



50 100 150 200 250 300 600 900 1,200

Hot Water Flow (T/h) 12 23 35 46 58 60 120 180 240


ORC Specifications on Using Low Temperature Hot Water


Screw Type ORC(*)



50 100 150 200 250 300 600 900 1,200

Hot Water Flow (T/h) 30 53 79 103 127 134 267 399 532

Cooling Water Flow (T/h) 168 300 440 577 710 750 1,493 2,237 2,981

ORC Specifications on Using Jacket Hot Water


Screw Type ORC(*)



50 100 150 200 250 300 600 900 1,200

Hot Water Flow (T/h) 67 130 188 214 267 316 628 940 1,252


HanPower ORC Engineering Applications

ORC on using hot water 202kW


ORC on using flue gas 200kW

HanPower ORC Engineering Applications

ORC on using flue gas 230kW

ORC on using steam 136kW


Requirement Analysis and Economic Evaluation HanPower continuously dedicates on 10kW~1,500kW ORC series product design,

development, and applications. With high quality and high performance products, we provide

ORC units and total solutions to meet your requirements. Would you like to recovery low grade

heat, such as industrial waste heat, geothermal heat, biomass, etc., please fill in the following

form and send to us (Fax: +886-3-4852226, E-mail: [email protected]). On

receiving your application data, we use our expertise to give you the ORC power capacity,

power station layout, and economic effects for your investment reference.

ORC Requirement Form

Company Address

Contact person Tel (or Mobile)

Contact person title e-mail

Low Grade Hear ORC Power System

Values Remarks

1 Heat Source Parameters

1.1 Hot Water, t/h (tons/hr)

Steam, t/h (tons/hr)

Flue Gas, Nm3/min

1.2 Temperature, ℃

Pressure, kg/cm2(G)

1.3 Operating Hours, hr/year

2 Heat Sink Parameters

Water Cooling

Air Cooling

Evaporative Cooling

Cooling Temperature, ℃

3 Electrical Features

Voltage, V 380V/440V/480V/3K/6K/10K

Frequency, Hz 50Hz or 60Hz

Electricity Cost，$/kWh Average electricity cost used.

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Organic Rankine Cycle Power Systems