Find the true order of the components of the refrigeration cycle? a) Evaporator-Compressor-Condenser-Expansion valve b) Condenser-Expansion valve-Evaporator-Compressor c) Evaporator-Compressor-Expansion valve-Condenser d) Expansion valve-Condenser-Compressor-Evaporator e) Compressor-Expansion valve-Condenser-Evaporator

Find the true order of the components of the refrigeration cycle? a) Evaporator-Compressor-Condenser-Expansion valve b) Condenser-Expansion valve-Evaporator-Compressor c) Evaporator-Compressor-Expansion valve-Condenser d) Expansion valve-Condenser-Compressor-Evaporator e) Compressor-Expansion valve-Condenser-Evaporator

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

Chapter3: Refrigeration And Refrigerants

Section: Chapter Questions

Problem 21RQ: Quality means _________ when referring to a refrigerant.

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b) Explain with suitable sketches the function of i) Components in the vapour compression cycleii) The indoor unit and outdoor unitiii) Cooling toweriv) Chiller
10 .In a certain refrigeration system for low temperature application , a two- stage operation is desirable which employs ammonia system that serves a 30 ton evaporator at -30 °C.The system uses a direct contact cascade condenser and the condenser temperature is 40 °C. How much bigger is the mass of the high pressure loop compared to the mass of the low pressure loop? A) 0.112 kg/sec lb B) 11.38 min C) kg 1.56 D) 0.26 kg /sec min
A) Explain the refrigerant charging process to the refrigeration cycle. In casea) Complete rechargeb) Partial charge B) Explain possible reasons of insufficient cooling performance of refrigeration unit.
A) Explain the refrigerant charging process to the refrigeration cycle. In case a) Complete recharge b) Partial charge B) Explain possible reasons of insufficient cooling performance of refrigeration unit.
Which list states the correct order of components for the absorption refrigeration? A) Evaporator, then absorber, then concentrator, then condenser. B) Absorber, then condenser, then evaporator, then concentrator. C) Condenser, then absorber, then concentrator, then evaporator.
Explain the refrigerant charging process to the refrigeration cycle. In case a) Complete recharge b) Partial charge
It is feasible to reuse the heat from the condenser and use it for domestic heating. a) Yes b) No This type of open compressor can have more than one speed. b) directly driven a) belt driven c) hermetic
Should the bulb of the thermostatic valve be positioned just below the inlet duct? aspiration? b) No a) Yes The hot gas defrost method uses heat from: c) make-up water b) electrical resistances a) hot compressor refrigerant When the refrigerated space has been allowed to heat up to a temperature higher than the desired one, the system must go through a process outside the normal design conditions to regain its normal operation, this process is called: c) hot drop a) overheating b) subcooling
Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator temperature is -30°C. Saturated vapor enters the condenser at 36°C, and saturated liquid exits at the same temperature. The mass flow rate of refrigerant is 10 kg/min. Determine the heat rejected to the condenser, in kW, A) 29.18 B) 28.45 C) 26.24 D) 27.90
In a certain refrigeration system for low temperature application , a two- stage operation isdesirable which employs ammonia system that serves a 30 ton evaporator at -30 OC .The systemuses a direct contact cascade condenser and the condenser temperature is 40 OC . How muchbigger is the mass of the high pressure loop compared to the mass of the low pressure loop?A) 0.112 kg/sec B) 11.38 ??/???C) 1.56 ??/???D) 0.26 kg /sec
Q3) give the short answer for the questions below; a) Growth the frost over evaporator surface lead to decrease freezer temperature. b) Using copper tube type-k in the shell and tube heat exchanger c) Make a vacuum pressure for the vapour compression cycle (refrigeration system) before charging with refrigerant (give the value of vacuum pressure) d) Age of compressor depending on the number of turn-on and turn- off, not depended on the working time. e) Skin type condenser favorite more than other type of static condenser in the chest freeze f) Draw the relationship between time and difference temperature for the conventional refrigerator cycle control and inverter refrigerator electrical behavior control.
Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator temperature is -30°C. Saturated vapor enters the condenser at 36°C, and saturated liquid exits at the same temperature. The mass flow rate of refrigerant is 10 kg/min. Determine the net heat transfer in the cycle, in kW, A) 4.06 B) 3.06 C) 3.40 D) 6.08