A:- A commercial refrigerator with refrigerant-134a as shown in Fig. Q3A as the working fluid is used to keep the refrigerated space at -35 °C by rejecting waste heat to cooling water that enters the condenser at 18 °C at a rate of 0.25 kg/s and leaves at 26 °C. The refrigerante enters the condenser at 1.2 MPa and 50 °C and leaves at the same pressure subcooled by 5 °C. If the compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, and (c) the COP. 1:2 MPa 5°C subcooled Expansion valve Fig. Q3A Condenser Evaporator Water 18% 1.2 MP 50PC Compressor

A:- A commercial refrigerator with refrigerant-134a as shown in Fig. Q3A as the working fluid is used to keep the refrigerated space at -35 °C by rejecting waste heat to cooling water that enters the condenser at 18 °C at a rate of 0.25 kg/s and leaves at 26 °C. The refrigerante enters the condenser at 1.2 MPa and 50 °C and leaves at the same pressure subcooled by 5 °C. If the compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, and (c) the COP. 1:2 MPa 5°C subcooled Expansion valve Fig. Q3A Condenser Evaporator Water 18% 1.2 MP 50PC Compressor

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: 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 piston-cylinder device initially contains 2 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: Given data: m=2 kgP1=100 kPaT1=20°CP2=120 kPaT2=80°CTo=25°CPo=100 kPa Need to determine the work…

Q: the COP of an ammonia refrigeration system that operates between-10℃ to and 32c. at-10℃:hf=154.056…

A: Given that , Ammonia refrigeration system…

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

A: To find COP of the refrigerator.

Q: A heat pump receives energy from a source at 80∘C and delivers energy to a boiler that operates at…

A: Introduction The coefficient of performance is the performance metric for the power consuming…

Q: Steam enters an industrial isentropic steam turbine at 3 MPa, and 7 percent steam at 500 kPa is…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

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

Q: Bananas are to be cooled from 20°Cto 4.6°C at a rate of 1555 kg/h by refrigerator that operates on a…

A: Given:- mc=1555 kg/hc=3.35 kJ/Kg°CT1=20°CT2=4.6°CW=2.5kWTo find:COP

Q: 6-A heat engine receives 6kW from 250°C source and reject heat at 30°C. Examine each of three cases…

A: Heat input, Qin= 6 kW= 6000 W Source temperature, T1= 250∘C= 250+ 273 K= 523 K Sink temperature, T2=…

Q: Heat engine and refrigerator. Consider a heat engine operating between temperatures Th and Tj.…

Q: There are received 68,000 kg/h of steam by an ideal regenerative engine, having only one heater, of…

A: Given Data Heater Pressure= 0.96 MPa Heater Receives= 15400 Kg/h Condenser Pressure= 0.007 MPa At…

Q: A new parabolic dish solar concentrator is being developed to supply electricity to a small remote…

A: Qs=200 KwTTR1=700° CTTR1=700+273=973 KTTR2=25+273=298 KWnet=120 Kw

Q: A reversed Carnot cycle refrigerator maintains a temperature of -5 °c. The ambient air temperature…

Q: Determine the maximum possible efficiency of the heat engine shown below. Also find the maximum…

A: Given Heat supplied, QH = 900 kJ/s Temperature, TH = 600oC = 873 K TL =…

Q: The large insulated flash chamber of a vacuum refrigeration plant is kept at low temperature by a…

A: To find: The quantity in cubic meter per minute of chilled water system can provide. Given: The…

Q: An ammonia refrigeration plant operating between pressures of 1167kPa and 268kPa is to produce…

Q: HOW MUCH HEAT IS RELEASED BY THE REFRIGERATOR TO THE HOT RESERVOIR?

Q: pressor at 400 kPa as a saturated vapor at a rate of 80 L/min COP, (b) the maximum COP, and (c) the…

Q: Vapor-Compression Cycle and operates with P1 = 140 kPa and xị at the outlet of the evaporator, and…

A: Given:- Regrigerant=R-134aP1=140kPaP3=300kPaP2=300kPaTH=25°CTL=-10°Cηc=75%=0.75 To find:-…

Q: A piston-cylinder device initially contains 2 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

Q: Define the no refrigerator can have a higher COP than a reversible refrigerator operating between…

A: COP of an irrevesible refrigerator is given by:→(COP)Ref,IRREV=1QHQL-1While,COP of a…

Q: A gas turbine that has a 0.75 efficiency compressor that compresses up to 0.5 MPa, a combustion…

Question

A:-
A commercial refrigerator with refrigerant-134a as
shown in Fig. Q3A as the working fluid is used to keep
the refrigerated space at -35 °C by rejecting waste heat
to cooling water that enters the condenser at 18 °C at a
rate of 0.25 kg/s and leaves at 26 °C. The refrigerante
enters the condenser at 1.2 MPa and 50 °C and leaves
at the same pressure subcooled by 5 °C. If the
compressor consumes 3.3 kW of power, determine (a)
the mass flow rate of the refrigerant, (b) the
refrigeration load, and (c) the COP.
12 MPa
5°C subcooled
Expansion
valve
Fig. Q3A
Condenser
Evaporator
Qu
Water
18%
1.2 MP
56PC
Compressor

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 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

Solve the problem correctly. Looking for genuine Solution.
Q3. Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and -5 C at a rate of 0.07 kg/s, and it leaves at 1.2 MPa and 70 C. The refrigerant is cooled in the condenser to 44 C and 1.15 MPa, and it is throttled to 0.21 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the COP of the refrigerator. Solve this question using both tables and P-h chart.
2
An electric water heater is fed with an input stream of 15.0 kg/min of water at 17.5°C. Hot water is then provided as two different output streams, one at 43.0°C and the other at 60.0°C. The volume of the water in the tank remains constant and the mass flowrate of the outlet stream at 43.0°C is 10.5 kg/min. Perform the following activities, i. Draw a detailed flowchart for this process with all given information. ii. Calculate the power, Q (in kW) that the electric heater must provide in order to keep the temperatures of the outlet streams at 43.0°C and at 60.0°C, respectively. You must write the mass and energy balances and show your calculation. Given: AH + AĖK + AĖ, = Q – W, where AH stands for the difference in enthalpy; ΔΗ- ΣΗoal -ΣΗit ial s As AH = H; – H,ref = mC,(T; – Tref), if the reference temperature Tref is selected as 0°C, the absolute enthalpy is given by AH¡ = H¡ = mC,T- %3D - %3D k] The specific heat of water is constant and is 4.182 within the range of kgºC temperature…