subject (thermo 2)pls show full steps with clear handwritingpls answer me in 20 mins sir CondenserHigh pressureExpansioncompressorvalveFlashchamberLow pressurecompressorExpansionvalveEvaporatorFigure Q4(b) (b)Consider a two-stage cascade refrigeration cycle with a flash chamber as shown in Figure Q4(b) with refrigerant R-134a as the workingfluid. The evaporator temperature is -10°C and the condenser pressure is 1600 kPa. The refrigerant leaves the condenser as a saturated liquid and isthrottled to a flash chamber operating at 0.45 MPa. Part of the refrigerant evaporates during the flashing process, and this vapour is mixed with therefrigerant leaving the low-pressure compressor. The mixture is then compressed to the condenser pressure by the high-pressure compressor. The liquidin the flash chamber is throttled to the evaporator pressure and cools the refrigerated space as it vaporizes in the evaporator. The mass flow rate of therefrigerant through the low-pressure compressor is 0.11 kg/s. Assuming the refrigerant leaves the evaporator as a saturated vapor and the isentropicefficiency is 86% for both compressors, determine;i. the mass flow rate of the refrigerant through the high-pressure compressor;ii. the rate of refrigeration supplied by the system;iii. the COP of this refrigerator; andiv. the rate of refrigeration and the COP if this refrigerator operated on a single-stage vapor compression cycle between the same evaporatingtemperature and condenser pressure with the same compressor efficiency and the same flow rate as calculated in part (i).

Answered: Image /qna-images/answer/16204288-7200-4e4a-831a-330dc8614bfc.jpg

Answered: Condenser High pressure Expansion valve…

Condenser High pressure Expansion valve compressor Flsh chamber Low pressure compressor Expansion valve Evaporator Figure Q4(b)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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subject (thermo 2)

pls show full steps with clear handwriting

pls answer me in 20 mins sir

Condenser
High pressure
Expansion
compressor
valve
Flash
chamber
Low pressure
compressor
Expansion
valve
Evaporator
Figure Q4(b)

(b)
Consider a two-stage cascade refrigeration cycle with a flash chamber as shown in Figure Q4(b) with refrigerant R-134a as the working
fluid. The evaporator temperature is -10°C and the condenser pressure is 1600 kPa. The refrigerant leaves the condenser as a saturated liquid and is
throttled to a flash chamber operating at 0.45 MPa. Part of the refrigerant evaporates during the flashing process, and this vapour is mixed with the
refrigerant leaving the low-pressure compressor. The mixture is then compressed to the condenser pressure by the high-pressure compressor. The liquid
in the flash chamber is throttled to the evaporator pressure and cools the refrigerated space as it vaporizes in the evaporator. The mass flow rate of the
refrigerant through the low-pressure compressor is 0.11 kg/s. Assuming the refrigerant leaves the evaporator as a saturated vapor and the isentropic
efficiency is 86% for both compressors, determine;
i. the mass flow rate of the refrigerant through the high-pressure compressor;
ii. the rate of refrigeration supplied by the system;
iii. the COP of this refrigerator; and
iv. the rate of refrigeration and the COP if this refrigerator operated on a single-stage vapor compression cycle between the same evaporating
temperature and condenser pressure with the same compressor efficiency and the same flow rate as calculated in part (i).

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