» Final Exam A Carnot refrigerator operates in a room in which the temperature is (I,- 25°C). The refrigerator consumes 489W of power when operating, What is the rate of heat removal (Q,) from the refrigerated space (in W) when the COP is 2.3?

» Final Exam A Carnot refrigerator operates in a room in which the temperature is (I,- 25°C). The refrigerator consumes 489W of power when operating, What is the rate of heat removal (Q,) from the refrigerated space (in W) when the COP is 2.3?

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

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...

See similar textbooks

Related questions

Q: A reversible heat engine operates between two reservoirs: one at T = 395.0°C and another at Te =…

A: Given: Th=395 °CTC=150 °CQ1=125 kJ

Q: The power requirement of the Carnot refrigerator in maintaining a low temperature region at -29.38F…

Q: The co-efficient of performance of a refrigerator wor ing on a reversed Carnot cycle is 4. The ratio…

A: Given, Coefficient of performace of refrigerator = COP = 4 Let us take highest temperature of…

Q: What is the highest COP that a refrigerator operating between temperature levels TL and TH can have?

A: The maximum COP(Coefficient of performance)in a refrigerator is possible only when it runs on…

Q: The thermal efficiency of an engine used to drive a refrigerator is 30%. The heat input into the…

Q: A refrigerator has working temperatures in the evaporator and condenser coils of –30 and 35°C…

A: a) Evaporator temperature, TL=-30oC=-30+273=243 K Condenser temperature, TH=35oC=35+273=308 K The…

Q: 3. A heat engine operating between a geothermal steam source at 205°C and a riv- er at 18°C achieves…

Q: 7. (a) Compute the possible maximum efficiency of a heat engine operating between the temperature…

A: Given Data (a) Higher temprature = 698'C Lower Temprature = 147'C We have to find Efficiency of…

Q: A refrigeration cycle operating as shown in the figure below has a coefficient of performance ß =…

A: GIVEN DATA FOR REFRIGERATION CYCLE COP=1.8 QOUT=750 KJ WE HAVE TO FIND QIN AND W ?

Q: An engine has a thermal efficiency of 40%. It is used to drive a refrigerator having a COP of 5.0.…

Q: A heat engine is supplied with 278 kJ/s of heat at a constant fixed temperature of 283 °C and the…

Q: efrigerator is -5°C. The temperature of the atmosphere is 27°C. Find max. COP of the refrigerator.…

Q: A vapour compression refrigerator uses methyl chloride and works in the pressure range of 11.9 bar…

A: Temp(C) Pressure(bar) hf hfg hg Sf Sg 30 1.19 64.59 135.03 199.62 0.24 0.6853 -10 5.67 26.87…

Q: A heat engine operates on a Carnot cycle between source and sink temperatures of 260°C and – 17.8°C.…

Q: A Carnot refrigerator operates between temperatures of 0 degrees Celsius and 30 degrees Celsius. If…

A: Given: Minimum and maximum temperatures of Carnot refrigerator are 0 degrees Celsius and 30 degrees…

Q: .A cold store maintains storage air temperature of minus 23°C in an ambient temperature of 27°C. The…

Q: An ammonia ice plant operates between a condenser temperature of 35 ℃ and an evaporator temperature…

Q: A typical new household refrigerator consumes about 680 kWh of electricity per year and has a…

A: The refrigerator consumes 680 kWh of electrical energy per energy means, this amount of energy is…

Q: A refrigerator operating in a room at 20 has to extract heat at a rate of 500 W from the cabinet at…

Q: What is the coefficient of performance of a refrigerator that operates with Carnot efficiency…

A: Given, TL = -3 °C = 270 KTH = 27 °C = 300 K COP of refrigerator is given by, COPR = TLTH - TL=…

Q: A Carnot refrigerator and a heat pump are supplied with equal amount of work. The refrigerator…

Q: A thermodynamic cycle receives 150 J of heat from a cold reservoir and rejects 165 J of heat to a…

A: Heat from a cold reservoir = 150 J Heat to a hot reservoir = 165 J

Q: A reversible heat engine operates between two reservoirs: one at T 395.0°C and another at Te 150°C.…

Q: (c) For the heat pump only, what reduction in heat rejection temperature would be achieved by…

A: So, the C.O.P of the heat pump is as follows:

Q: QI (ii) Figure QI (ii) a residential heat pump plant has a coefficient of Performance 2.4. Calculate…

Q: What is the coefficient of performance of a refrigerator that operates with Carnot efficiency…

A: GivenTL=-3oC=270KTH=20oC=293K

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C_and another at Te =…

Q: Q1 A Carnot refrigeration cycle absorbs heat at -8°C and rejects heat at 55°C. (a) If the heat…

Q: A heat source supplies 2325 kJ/kg to a working substance in a closed thermodynamic power cycle. The…

A: The net work output of the cycle can be determined as shown below.

Q: A Carnot refrigerator operates in a room in which the temperature is (T,= 26°C). The refrigerator…

A: Given data: The temperature of a high-temperature source, TH = 26°C. Power consumed by the…

Q: A reversible heat engine operates between two reservoirs: one at T 395.0°C and another at 1) a. Te…

A: We are suppose to solve only 3 subparts. Please post other parts as a separate question.

Q: A cold store maintains storage air temperature of minus 23°C in an ambient temperature of 27"C. The…

Q: The capacity of the refrigerator( working on reversed carnot cycle) is 280 tonnes when operating…

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C and another at Te =…

A: Given that there is a reversible heat engine working between two temperature limits Th = 305…

Q: 1.4. For a CSP plant with an electric power output of 30 MW and an overall plant efficiency of 18%,…

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C and another at Te =…

Q: Commercial Refrigerators are

A: A commercial refrigerator is refrigerator which is used as cold storage for various business items .…

Q: A certain refrigerator has a COP of 5.00. When the refrigerator is running, its power input is 500…

A: For making 44 Kg ice in a day from 20 °C water, heat needs to be extracted. Desired effect, QDE…

Q: A refrigerator operates on reversed Carnot cycle between the temperature limits -10 C and 45 C. The…

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C and another at Te =…

Q: PROBLEM : An Air Refrigeration System is required to produce a 52.50 kPa & a kW of refrigeration…

Q: 13. An actual vapour compression refrigerator, using R-134a as a refrigerant is operating on the…

Q: 4.0 The capacity of the refrigerator (working on reversed Carnot cycle) is 280 tonnes when operating…

Q: Choose the CORRECT relation between the Coefficient of Performance (CoP) for Refrigerator and Heat…

Q: 1. During a cyclic process, a heat engine absorbs 500 J of heat from a hot reservoir, does work and…

A: Given:Heat engineheat absorbs, Q1=500 Jheat to sink, Q2=300 J

Q: A refrigerator should remove 400 kJ from some food. Assume the refrigerator works in a Carnot cycle…

Q: A carnot refrigerator draws 16 kW of heat from a cold environment at 6 degrees. It gives heat to the…

A: Data given in this problem:T1 = 200c = 20+273 = 2930 K T2 = 60c = 6+273 = 2790 KHeat removed from…

Q: Q12 A refrigerator is used to remove a heat from a food at a rate of 532.6 kW and required a…

Q: Q1 A Carnot refrigeration cycle absorbs heat at -8°C and rejects heat at 55°C. (a) If the heat…

Question

> Final Exam
A Carnot refrigerator operates in a room in which the temperature is (I,,- 25°C). The
refrigerator consumes 489W of power when operating. What is the rate of heat removal
(Q,) from the refrigerated space (in W) when the COP is 2.3?

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

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 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

The operating condition for the single compressor in a household refrigerator is the lowest box temperature, which is typically A. 0F B. -20F C. 20F D. 40F
If 14 gpm of water is flowing through an open-loop heat pump with a temperature difference of 7F, how much heat in Btu/h is being absorbed or rejected in the heat pump? Show all work and units.
Welded ______sealed compressors are normally used in household refrigerators.
The temperature inside a Carnot refrigerator is8.34°C. What is the high temperature, Th, in Celsius needed to give this refrigerator a coefficient of performance of 9.43?
vapour compression refrigerator operates between the pressure limits of 462.4 kN/m² and 1785.9 kN/m². At entry to compressor the refrigerant is dry saturated and after compression it has a temperature of 59°C. The compressor has boreand stroke of 75 mm and runs at 8 rev/sec. With volumetric efficiency of 30% The temperature of the liq. refrigerant as it leaves the condenser is 32°C and specific heat capacity of the super heated vapour may be assumed constant. Determine (1) The coefficiency of performance of refrigerator. (1) The mass flow of the refrigerant in kg/hr.
What is the coefficient of performance of a refrigerator that operates with Carnot efficiency between temperatures -3.00°C and +27.0°C?
A vapour compression refrigerator uses methyl chloride and works in the pressure range of 11.9 bar and5.67 bar. At the beginning of the compression, the refrigerant is 0.96 dry and at the end of isentropiccompression, it has a temperature of 55°C. The refrigerant liquid leaving the condenser is saturated. If themass flow of refrigerant is 1.8 kg/min. Determine :(i) Co-efficient of performance.(ii) The rise in temperature of condenser cooling water if the water flow rate is 16 kg/min.(iii) The ice produced in the evaporator in kg/hour from water at 15°C and ice at 0°C. Take : Specific enthalpy of fusion of ice = 336 kJ/kgSpecific heat of water = 4.187 kJ/kg.
Why are today’s refrigerators much more efficient than those built in the past?
The objective of a refrigerator is to remove QL from the cooled space.
A Carnot refrigerator operates using R-152a operates at a condenser temperature of 35oC and an evaporator temperature of -25oC. Determine its coefficient of performance.
please answers fasterrr An ice-making machine in Restoran Syed operates on the vapor-compression refrigeration cycle. Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.13MPa and a °C at a rate of 0.13kg/s, and it leaves at 0.7 MPa and b °C. The refrigerantis cooled in the condenser to c°C and dMPa, and it is throttled to 0.14MPa. 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;i.the rate of heat removal from the refrigerated space,ii.the power input to the compressor, iii.the isentropic efficiency of the compressor, and iv.the COP of the refrigerator.v.if the compressor has no irreversibility, how about the COP?vi.Justify the difference between ideal and actual cycles. a= -8 b= 49 c= 25 d= 670
A refrigeration cycle is used to keep a food department at −5 ◦C in an environment at 20 ◦C. The total heat gain in the food department is estimated to be 750 kJ/h and the heat rejection in the condenser is 1250 kJ/h. Determine (a) the power input to the compressor in kW, (b) the COP of the refrigerator, and (c) the minimum power input to the compressor if a reversible refrigerator was used.