1. Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the idealvapor-compression refrigeration cycle except that the compression process is non-ideal. Thecondenser is maintained at 900 kPa, and the evaporator at -26°C. Assume that Stream 1 is asaturated vapor and that Stream 3 is a saturated liquid.3WarmenvironmentQHHAMACondenserExpansionvalveEvaporatorJumCold refrigeratedspace2WinCompressora) If the mass flow of the refrigerant is 1.2 kg/s, what is the rate of heat removal from the coldspace? Give your answer to the nearest kW.b) What is the COP of this refrigerator if the compressor has an isentropic efficiency of 87%?

Given:Refrigerant=R134aCondenser pressure, Pc=900 kPaEvaporator temperature, Te=-26oCSaturated vapor…

Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the ideal vapor-compression refrigeration cycle except that the compression process is non-ideal. The condenser is maintained at 900 kPa, and the evaporator at -26°C. Assume that Stream 1 is a saturated vapor and that Stream 3 is a saturated liquid.

Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the ideal vapor-compression refrigeration cycle except that the compression process is non-ideal. The condenser is maintained at 900 kPa, and the evaporator at -26°C. Assume that Stream 1 is a saturated vapor and that Stream 3 is a saturated liquid.

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

See similar textbooks

Related questions

Q: Calculate the COP of an R-134a driven fully reversible refrigerator for an evaporator temperature of…

A: Coefficient of performance is ratio of desired effect to the work input. Cop = ( desired effect…

Q: Determine the degrees of subcooling at the exit of the condenser of a 2-ton air- conditioner system.…

A: Given2ton air conditionerR-134a flow rate m=0.05 kg/s Evaporator PressurePe= 200 kPa Condenser…

Q: A vapor-compression refrigerator operates as in the right figure using CO₂ as refrigerant. The…

A: A vapor-compression refrigerator operates as in the right figure using CO₂ as refrigerant.The…

Q: A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the…

A: Coefficient of performance of refrigerator is defined as the ratio of heat removed from the sink to…

Q: Consider an ideal refrigeration cycle which use R-134 a as the working fluid. The temperature of the…

Q: C. Determine the COP of this refrigerator for the working fluid R-134a.

A: To find COP of the refrigerator.

Q: A Carnot refrigeration cycle uses refrigerant-134a as the working fluid. The refrigerant evaporates…

Q: determine the COP of the simple vapor compression refrigeration cycle R-134a. the evaporation…

A: Given Tmin = 253 K Tmax = 303 K

Q: A refrigerator operates on the ideal vapor-compression refrigeration cycle and uses refrigerant-134a…

Q: A cold storage facilities in Saranggani Province operates in a vapor compression cycle. It is…

A: Given that: Tuna is being cooled using vapor compression refrigeration cycle. Tuna inlet and out…

Q: An ideal vapor-compression refrigeration cycle that uses refrigerant-134a as its working fluid…

Q: Required information A commercial refrigerator with refrigerant-134a as the working fluid is used to…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: Given:The refrigerant is The space temperature is The water inlet temperature is The water mass flow…

Q: Consider a refrigerator that operates on the vapor compression refrigeration cycle with R-134a as…

A: According to the given dataA vapour compression cycle is drawn belowWe need to findThe coefficient…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

Q: Determine the refrigeration load. (Take the required values from saturated refrigerant-134a tables…

Q: A refrigerator uses R-134a as the working fluid and uses a subcooling-superheating heat exchanger…

A: Given:Refrigerant=R134aEvaporator temperature, Te=-10oCCondenser pressure, Pc=1000 kPaMass flow rate…

Q: A refrigerantion cycle with R-134a as its working fluid is to maintain the refrigerated space at −10…

A: Solution: The correct answer with necessary explanation is given below:

Q: A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the…

A: Given:Refrigerant=134aRefrigerated space temperature, Te=-35oCWater inlet temperature, Tw,i=18oCMass…

Q: HFC-134a is the working fluid of a steady-flow Carnot refrigerator. The refrigerant enters the…

Q: workin refrigerant-134a operating on the ideal vapor-compression refrigeration cycle is to maintain…

Q: A two-stage cascade refrigeration system is to provide cooling at -38°C while- operating the high…

A: Given Working fluid R-134a High temperature condenser pressure =1.6 MPa Lower cycle condenser…

Q: An air conditioner using refrigerant-134a as the working fluid and operating on the ideal…

Question

1. Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the ideal
vapor-compression refrigeration cycle except that the compression process is non-ideal. The
condenser is maintained at 900 kPa, and the evaporator at -26°C. Assume that Stream 1 is a
saturated vapor and that Stream 3 is a saturated liquid.
3
Warm
environment
QH
HAMA
Condenser
Expansion
valve
Evaporator
Jum
Cold refrigerated
space
2
Win
Compressor
a) If the mass flow of the refrigerant is 1.2 kg/s, what is the rate of heat removal from the cold
space? Give your answer to the nearest kW.
b) What is the COP of this refrigerator if the compressor has an isentropic efficiency of 87%?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Hello, please solve this problem, Thank you very much
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C Condenser Expansion valve Evaporator OL Water 18°C 1.2 MPa 65°C Oin W in Compressor 60 kPa -34°C Determine the COP of the refrigerator. (You must provide an answer before moving on to the next part.) The COP of the refrigerator is 1.824 >
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C ↑ 4 Condenser Expansion valve Evaporator QL Water 18°C 1.2 MPa 65°C ↑gin Win Compressor 60 kPa -34°C Determine the theoretical maximum refrigeration load for the same power input to the compressor. The theoretical maximum refrigeration load for the same power input to the compressor is KW.
A two-evaporatoor compression refrigeration system like that in the Figure below uses refrigerant-134a as the working fluid. The system operates evaporator 1 at 30 psia, evaporator 2 at 10 psia, and the condeser at 180 psia. The cooling load for evaporator 1 is 9000 Btu/h and that for evaporator 2 is 24,000 Btu/h. Determine the power required to operate the compressor and the COP of this system. The regrigerant is saturated liquid at the exit of the condenser and saturated vapor at the exit of each evaporator, and the compressor is isentropic.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C Expansion valve 4 Condenser ↓ Evaporator Water 18°C QL 1.2 MPa 65°C Qin W in Compressor 60 kPa -34°C Determine the quality of the refrigerant at the evaporator inlet. (Take the required values from saturated refrigerant-134a tables.) (You must provide an answer before moving on to the next part.) The quality of the refrigerant at the evaporator inlet is
A rod is hanging vertically, supports a load of 2000N. Neglecting the weight of the wire, determine the required diameter if the tensile stress is 140MPa.