A performance test of an ice plant gave the following data: Capacity: 20 tons of ice/day Refrigerant: Ammonia Condenser pressure: 1391.5 kPa Evaporator pressure: 208.26 kPa Raw water temperature: 32OC Harvest temperature: -7OC Block of ice: 300 lb/block The compressor is twin-cylinder, single acting, D/L = 1.25, 450 rpm, mechanical efficiency is 80%. Additional heat load due to infiltration and conduction is 20%. Determine: a) Number of cans needed b) Product cooling load c) Refrigerating capacity in tons of refrigeration d) Amount of refrigerant flow e) Size of motor to drive the compressor f) Bore diameter and length of stroke
A performance test of an ice plant gave the following data: Capacity: 20 tons of ice/day Refrigerant: Ammonia Condenser pressure: 1391.5 kPa Evaporator pressure: 208.26 kPa Raw water temperature: 32OC Harvest temperature: -7OC Block of ice: 300 lb/block The compressor is twin-cylinder, single acting, D/L = 1.25, 450 rpm, mechanical efficiency is 80%. Additional heat load due to infiltration and conduction is 20%. Determine: a) Number of cans needed b) Product cooling load c) Refrigerating capacity in tons of refrigeration d) Amount of refrigerant flow e) Size of motor to drive the compressor f) Bore diameter and length of stroke
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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A performance test of an ice plant gave the following data:
Capacity: 20 tons of ice/day Refrigerant: Ammonia
Condenser pressure: 1391.5 kPa Evaporator pressure: 208.26 kPa
Raw water temperature: 32OC Harvest temperature: -7OC
Block of ice: 300 lb/block
The compressor is twin-cylinder, single acting, D/L = 1.25, 450 rpm,
is 80%. Additional heat load due to infiltration and conduction is 20%. Determine:
a) Number of cans needed
b) Product cooling load
c) Refrigerating capacity in tons of refrigeration
d) Amount of refrigerant flow
e) Size of motor to drive the compressor
f) Bore diameter and length of stroke
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