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00 x 200 mm ammonia compressor with a compression efficiency of 82% operates with a suction pressure of 291.57 kPPa and a condenser pressure of 1203.7 kPa at 22 rps. The refrigerant cools 100 kg/min of water from 250C to 20C and assuming 5% of the useful refrigerating effect is lost due to the process of cooling, determine: a) RE in tons of refrigeration h2 = 1653 kJ/kg b) mass flow rate of ammonia c) actual work of compression kW

00 x 200 mm ammonia compressor with a compression efficiency of 82% operates with a suction pressure of 291.57 kPPa and a condenser pressure of 1203.7 kPa at 22 rps. The refrigerant cools 100 kg/min of water from 250C to 20C and assuming 5% of the useful refrigerating effect is lost due to the process of cooling, determine: a) RE in tons of refrigeration h2 = 1653 kJ/kg b) mass flow rate of ammonia c) actual work of compression kW

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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100 x 200 mm ammonia compressor with a compression efficiency of 82% operates with a suction pressure of 291.57 kPPa and a condenser pressure of 1203.7 kPa at 22 rps. The refrigerant cools 100 kg/min of water from 250C to 20C and assuming 5% of the useful refrigerating effect is lost due to the process of cooling, determine:

a) RE in tons of refrigeration h2 = 1653 kJ/kg

b) mass flow rate of ammonia

c) actual work of compression kW

d) find Brake work (kW) if mechanical eff is 90%

e) Actual volumetric eff

f) clearance volumetric eff if c=6%

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