Q2:- Multi-evaporator system with singlecompressor and individual expansion valves usedrefrigerant 143a at two different temperatureswith a single compressor and a single condenser.The low-temperature evaporator operates at -40°C with saturated vapor at its exit and has arefrigerating capacity of 5 tons. The higher-temperature evaporator produces saturated vaporat 4 bar at its exit and has a refrigerating capacityof 3 tons. The compression with isentropicefficiency 85% to the condenser pressure of 10bar. The refrigerant leaves the condenser at 10 barwith subcooled to a temperature of 10°C.Draw the schematic diagram of the cycle and p-hdiagram then calculate:a) The mass flow rate of refrigerant through eachevaporator.b) The compressor power input, in kW.c) The C.O.P.d) The rate of heat transfer from the refrigerantpassing through the condenser, in kW.e) The overall heat transfer coefficient of thecondenser is 430 W/m2.°C and a heat transferarea of 16 m2. If cooling water at a flow rate of3kg/s enters the condenser at a temperature of 25°C, what is the out water temperature.Take the specific heat of water as 4.18kJ/kg.C.

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Q2:- Multi-evaporator system with single compressor and individual expansion valves used refrigerant 143a at two different temperatures with a single compressor and a single condenser. The low-temperature evaporator operates at -40 °C with saturated vapor at its exit and has a refrigerating capacity of 5 tons. The higher- temperature evaporator produces saturated vapor at 4 bar at its exit and has a refrigerating capacity of 3 tons. The compression with isentropic efficiency 85% to the condenser pressure of 10 bar T he ref. orant loa the at 10 bar

Q2:- Multi-evaporator system with single compressor and individual expansion valves used refrigerant 143a at two different temperatures with a single compressor and a single condenser. The low-temperature evaporator operates at -40 °C with saturated vapor at its exit and has a refrigerating capacity of 5 tons. The higher- temperature evaporator produces saturated vapor at 4 bar at its exit and has a refrigerating capacity of 3 tons. The compression with isentropic efficiency 85% to the condenser pressure of 10 bar T he ref. orant loa the at 10 bar

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 12RQ: The function of the pressure tank in an open-loop, geo-thermal heat pump well system is to prevent...

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