Costing of the system: Find the capex and opex for the following: The following data are for
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Costing of the system: Find the capex and opex for the following:
The following data are for the Intercooler heat exchangerSystem specifications:
Purpose of the system is to compress natural gas through a stage compressore system.
Gas is being compressed, and we are using cooling water
Mass flow rate of water kgs
Compressor efficiency at each stage is
Fist pressure os bar and final pressure is bar
Intercooler details:
Shell and tube are both made of carbon steels
Compressor details:
Compressor efficiency at each stage is
Operational parameters:
operating for month
Costing of the system: Find the capex and opex for the following:
The following data are for the Intercooler heat exchanger
Heat Transfer rate: kW
Mass flow rate of water: kgs
Logarithmic temp: C
Heat Transfer area: m
Number of tubes: mm diameter
Length of pipe loop: m
We have a stage compressor
Specefic Heat, cp JmolK Specefic heat ratio,
Number of Stages Universal Gas Constant, R JmolK
Pressure ratio Inlet Pressure P bar
Outlet Pressure P bar Inlet Temperature T degrees C
Kelvin
Efficiency
Compression Ratio
Incremental Compression Ratio
Compressor Stages
Stage :
Suction Pressure bar
Suction temperature C C
Suction temperature K K
Discharge Pressure bar
Work Watts
Actual Work Watts
Discharge Temperature K K
Discharge Temperature C C
Stage :
Suction Pressure bar
Suction temperature C C
Suction temperature K K
Discharge Pressure bar
Work Watts
Actual Work Watts
Discharge Temperature K K
Discharge Temperature C C
Install intercooler here
Stage :
Suction Pressure bar
Suction temperature C C
Suction temperature K K
Discharge Pressure bar
Work Watts
Actual Work Watts
Discharge Temperature K K
Discharge Temperature C C
Stage :
Suction Pressure bar
Suction temperature C C
Suction temperature K K
Discharge Pressure bar
Work Watts
Actual Work Watts
Discharge Temperature K K
Discharge Temperature C C
Centrifugal compressor: bar, electric motor drive with gearbox, material of construction: steel
power kW
C kW
Material factor: stainless steel
Other factors: pressure Pbar
COSTS OF SERVICES AND RAW MATERIALS
Cooling water per tonne
Electricity per MWh
toluene per tonne
benzoic acid per tonne
EQUIPMENT COSTS
Shell and tube heat exchangers
carbon steel tubes and shell.
a A to m
C e A
b A m
C eA
Shell and tube material factor, f faab shell tube a b
CS SS
SS SS
CS monel
monel monel
CS Ti
Ti Ti
CS Admiralty
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