Pipe Sizing Charts Tables _ Energy-Models

19/9/2014 Pipe Sizing Charts Tables | Energy-Models.com

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Design Criteria: 3' Frictional Pressure Drop per 100' Pipe Length with a Maximum Velocity of 10 ft/sec

Figure - 1 Friction Loss for CLOSED Piping Systems: Schedule 40 Steel Source: Carrier SystemsDesign

OPEN SYSTEMS

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Figure - 2 Friction Loss for OPEN Piping Systems: Schedule 40 Steel Source: Carrier Systems Design

COPPER Physical Dimensions and Sizing Criteria(ASPE Data Book)





PLASTIC Physical Dimensions and Sizing Criteria (ASPE Data Book)


Copper Pipe Sizing Chart







Figure - 3 Friction Loss for Copper Piping Systems: Types K, L, & M Source: Carrier Systems Design





CAST IRON Physical Data Hydraulic Handbook ColtIndustries





ALUMINUM , BRASS Handbook for Mechanical Engineers : Baumeister & Marks


PIPE DESIGN BASED ON HAZEN WILLIAMSFORM(UfL=A0.2083 x (100/C)^1.85 x Q^1.85/D^4.8635 )

Source: Cameron Hydraulic Data, 1926-62






Dynamic Pressure Losses through FittingsEL = L/D* D (EL = Equivalent Length. L=Pipe Length, D = Pipe Diameter)

Velocity Pressure Factor (K) forWater : K = C*D**E: Pressure Drop (PD) = K*VP





Dynamic Pressure Losses through ValvesEL = L/D* D (EL = Equivalent Length. L=Pipe Length, D = Pipe Diameter)

Velocity Pressure Factor (K) forWater : K = C*D**E: Pressure Drop (PD) = K*VP





PROPERTIES OF LIQUIDS




STEAM PRESSURE CLASSIFICATION AND PIPE SIZINGDESIGN CRITERIA

LOW PRESSURE STEAMPIPE SIZING CRITERIA : Flow Rates of Steam (lbs/hr)



MEDIUM PRESSURE STEAM PIPE SIZING CRITERIA :Flow Rates of Steam (lbs/hr)

HIGH PRESSURE STEAMPIPE SIZING CRITERIA : Flow Rates of Steam (lbs/hr)

Pressure Drop (psi/100') sizing criteria for open gravity(sloped pipe) condensate returnCONDENSATE FLOWRATE (lbs/hr) Condensate Return Pressure = 0 psig



PROPERTIES OF STEAM








Example: 6800 lbs per hour of steam flow in a 2 / inch pipe at 100 psig pressure.What is the pressure (psi) drop per 100 ft length of pipe and the flow velocity?

Answer: psi/100' = 11 velocity = 32,000 fpm

Figure - 17 Steam Flow Rates at Various Pressures and Velocities for Schedule 40 Pipe Source: ASHRAE

Figure - 18

Steam flow

12





at 30 psig

Source:ASHRAE

DesignCriteria:

0.75 psi per100 ft pipe

Max Vel =6,000 fpm


Figure - 19

Steam flowat 50 psig

Source:ASHRAE

DesignCriteria:


Max Vel =8,000 fpm

Figure - 20


Source:ASHRAE






DesignCriteria:


Max Vel =10,000 fpm


Figure - 21


Source:ASHRAE

DesignCriteria:


Max Vel =10,000 fpm





Natural Gas Pipe Sizing Tables and Charts

Steel Pipe - Schedule 40Downstream Pressure


For natural gas the nominal BTU/cf varies from about 900 to 1100 BTU/cf. In general it iscommon to set

Steel Pipe - Schedule 40

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inlet upstream pressure is more than 5 psig (35 kPa)

fittings factor 1.2 - equivalent pipe length = pipe length + 20%

1 Cubic Foot (CF) = Approx 1,000 BTUs

1 CFH ≈ 1 MBH

1 Btu/h = 0.293 W



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pressure less than 1 1/2 psig pressure drop 0.5 inches water column

specific gravity of natural gas energy content in natural gas 10

1 Cubic Foot (CF) = Approx 1,000 BTUs 1 CFH = 1 MBH

common to use fittings factor 1.5 - equivalent pipe length

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in table above = pipe length + 50%

For natural gas the nominal BTU/cf varies from about

900 to 1100 BTU/cf. In general it is common to set

(/sites/all/files/advanced-pages-31058/pipe-sizing-charts-tables-31.png) (/sites/all/files/advanced-pages-31058/pipe-sizing-charts-tables-32.png)

The capacity of a low pressure natural gas (less than 1 psi) pipe line can be calculated with theSpitzglass formula like

q = 3550 k ( h / l SG) (1)

where

q = natural gas flow capacity (cfh) h = pressure drop (inWater Column)

l = length of pipe (ft) k = [d /(1 + 3.6/d + 0.03 d)]

d = inside diameter pipe (in) SG = specific gravity

pressure less than 1 1/2 psig

common to use fittings factor 1.5 - equivalent pipe lenght in table above = pipe length + 50%

pressure drop 0.5 inches water column

specific gravity of natural gas 0.6

energy content in natural gas 1000 Btu/lb

One MBH is equivalent to 1000 BTU's per hour

pressure less than 1 1/2 psig

common to use fittings factor 1.5 - equivalent pipe length in table above = pipe length + 50%

pressure drop 0.5 inches water column

specific gravity of natural gas 0.6

energy content in natural gas 1000 Btu/lb

One MBH is equivalent to 1000 BTU's per hour

1 Btu/h = 0.293 W

1 lb = 0.4536 kg

1 ft (foot) = 0.3048 m

1 in water = 248.8 N/m (Pa) = 0.0361 lb/in (psi) = 25.4 kg/m = 0.0739 in mercury

1 psi (lb/in ) = 6,894.8 Pa (N/m )

2 2 2

2 2

1/2

5 1/2





For natural gas the nominal BTU/cf varies from about 900 to 1100 BTU/cf . In general it iscommon to set

1 Cubic Foot (CF) = approx 1,000 BTUs

1 CFH = 1 MBH

The specific gravity of natural gas varies from 0.55 to 1.0 .

The downstream pressure in a houseline after the meter/regulator is in general in the

range of 7 to 11 inches Water Column, or about 1/4 psi.

Example - Natural Gas Pipe Capacity

The capacity of a 100 ft natural gas pipe with a nominal diameter 0.5 inches (actual ID 0.622 in)

and 0.5 inches WC pressure drop can be calculated as

k = [(0.622 in )5 /(1 + 3.6 / (0.622 in) + 0.03 (0.622 in))]0.117

q = 3550 0.117 ( (0.5 in) / (100 ft) 0.60 ) 1/2 = 37.9 cfh

Specific gravity of natural gas is set to 0.60.






Horizontal Fixture Branches andStacks Building Drains and Sewers

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BACK TOTOP









ROOF DRAIN AND LEADER SIZING




HORIZONTAL RAINWATER PIPE SIZINGHORIZONTALRAINWATER PIPE SIZING



HORIZONTAL RAINWATER PIPE SIZING






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Example of Primary-Secondary Piping Network System




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Varkie C. Thomas, Ph.D., P.E. Research Professor College of ArchitectureIllinois Institute of Technology Chicago, Illinois, USA

Varkie Thomas taught graduate courses in Energy Efficient Building Design, Building EnergyPerformance Analysis and advised doctoral candidates (1996-2008) as an Adjunct Professor atIllinois Institute of Technology (IIT) from SOM. He is currently a Research Professor with thePh.D. program at IIT. He was a member of the UN Technical Program to China in 1991 and aVisiting Professor from Purdue in Malaysia in 1996/97 funded by the World Bank.

Academic: B.Sc. (Honors) in Mathematics from St. Xavier’s College Bombay University; Post-Graduate Diploma in Environmental Engineering from London South Bank University; Post-Graduate Diploma (with Distinction) and Ph.D. in Industrial Management from StrathclydeUniversity Glasgow. Registered Professional Engineer (P.E.) and Certified Energy Manager(CEM - Association. of Energy Engineers).

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Pipe Sizing Charts Tables _ Energy-Models