A refrigerator working on Carnot cycle uses R134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 30 C° in the condenser as it rejects heat. The evaporator pressure is 120 kPa. Show the cycle on a T-s diagram relative to saturation lines, and determine (a) COP F (b) Amount of heat absorbed from the refrigerated space, and (c) Consumed work.

A refrigerator working on Carnot cycle uses R134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 30 C° in the condenser as it rejects heat. The evaporator pressure is 120 kPa. Show the cycle on a T-s diagram relative to saturation lines, and determine (a) COP F (b) Amount of heat absorbed from the refrigerated space, and (c) Consumed work.

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

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

See similar textbooks

Related questions

Q: A refrigerator operates on a non-ideal rankine cycle. Leaving the evaporator, the refrigerant is at…

A: This non-ideal refrigeration cycle operates with an evaporator at 180 kPa and -10°C, a compressor…

Q: A refrigerator operates on an ideal vapour-compression refrigeration cycle and uses refrigerant…

Q: Refrigerant 134a enters the compressor of a vapor-compression refrigeration cycle at 150 kPa as a…

Q: A gas refrigeration system using air as the working fluid has a pressure ratio of 5 (see Fig. Q 1).…

A: Given, Gas Refrigeration cycle,

Q: Consider a refrigeration system that operates on an actual vapor-compression refrigeration cycle…

Q: A refrigerator works using a two-stage cascade system. Each of the cycles uses the same refrigerant…

A: Given: The smallest pressure of refrigerant, P1 = 14.5 psi The medium pressure of the refrigerant,…

Q: A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a.…

A: ''Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: What is the theoretical minimum pressure possible in the condenser if it is being cooled by river…

Q: A refrigerator uses refrigerant R-134a as the working fluid and operates on an ideal vapor-…

Q: An automotive air conditioner operates on the vapor-compression refrigeration cycle with…

A: Given:Refrigerant=R134aCompressor inlet condition, P1=180 kPa, superheated by 2.7oCCompressor exit…

Q: An ideal ammonia (R – 717) vapor-compression refrigeration cycle has an evaporator temperature of…

Q: Problem 2 – Heat Pump Thermodynamic Analysis Refrigerant-134a enters the condenser of a residential…

A: The inlet pressure at condenser is The inlet temperature at the condenser is The volume flow rate is…

Q: The working fluid of a liquid-vapor cycle is 1kg of R-134a (Hint: Use the R-134a thermodynamic…

Q: An ideal gas refrigeration cycle using air as the working fluid operates between the pressure limits…

Q: Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 50 at a rate of 35…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to 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: (#7ppVI-14Prm) - A steam plant operating with an initial pressure of 1.70 MPa and 370 C temperature…

A: To findWhat is the cogeneration efficiency of the system in percent?GivenTurbine efficiency, Boiler…

Q: An ideal vapor-compression refrigeration cycle uses R-134a as the refrigerant. The refrigerant…

Q: A medium size power station is used to produce 30 MW net power for a refinery. The station uses…

Q: A vapour compression refrigeration plant uses ammonia. The compressor takes vapour from the…

A: Given:Refrigerant= AmmoniaRefrigerant condition at compressor inlet, P1=207.7 kPa,…

Q: The COP of vapor-compression refrigeration cycles improves when the refrigerant is subcooled before…

A: The COP of a system is the useful heat supplied or removed to the work required to remove the heat…

Question

A refrigerator working on Carnot cycle uses R134a as the working fluid. The refrigerant
changes from saturated vapor to saturated liquid at 30 C° in the condenser as it rejects
heat. The evaporator pressure is 120 kPa. Show the cycle on a T-s diagram relative to
saturation lines, and determine
(a) COP F
(b) Amount of heat absorbed from the refrigerated space, and
(c) Consumed work.

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: Write down the given data

VIEW

Step 2: Calculate COP and amount of heat absorbed from the refrigerated space:-

VIEW

Step 3: Calculate amount of work consumed :-

VIEW

Solution

VIEW

Step by step

Solved in 4 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

Condensers in these refrigerators are all_______cooled.
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
Consider an ideal refrigeration cycle that has a condenser temperature at 45oC and an evaporator temperature of -15oC. Show the process in a T-S diagram. Determine the coefficient of performance of this refrigerator for refrigerant 134a as the working fluid. Repeat the calculation for ammonia.
Q2. Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 140 kPa and is compressed to 800 kPa. Show the cycle on a T-s diagram with respect to saturation lines and determine (a) the quality of the refrigerant at the end of the throttling process, (b) the coefficient of performance, and (c) the power input to the compressor. Solve this question using both tables and P-h chart.
please provide full calculations thank you
The evaporator and condenser is isobaric with a net heat transfer 250 W in a vapor-compression refrigeration cycle. The cycle operates with R-134a working fluid at a steady state. The compressor's isentropic efficiency is at 60% with a high pressure of 16 bar and low pressure of 1 bar during the cycle. Solve for the mass flow rate, coefficient of performance, and draw the T-s diagram.
A Freon 12 vapour compression system operating at a condenser temperature of 45Co and an evaporator temperature of 0Co develops 20 tons of refrigeration. Using the p-h diagram for Freon 12, determine; (15) a) The mass flow rate of the refrigerant circulated. b) The heat rejected in the condenser, and c) The Carnot COP and the actual COP of the cycle.
An ideal refrigeration cycle operates with R134a as the working fluid. The temperature of refrigerant in the condenser and evaporator are 40ºC and -20ºC respectively. The mass flow rate of refrigerant is 0.1 kg/s. Determine the cooling capacity and COP of the plant.
A refrigeration system operates on an ideal vapor compression using R-12 with an evaporator temperature of -30 C and a condenser exit temperature of 49.30C and requires 74.6 kW motor to drive the compressor. What is the capacity of the refrigerator in tons of refrigeration? Enthalpy at the condenser ,entrance = 382KJ/Kg, exit = 248.15KJ/Kg, at evaporator entrance= 248.15kJ/kg, exit =338.14kJ/kg.
A two stage cascade refrigeration system uses R-11 as the working substance. The evaporator is at -30 0C and the high pressure condenser is at 300C. The cascade condenser is a direct contact type. The refrigeration load is 28 tons. Given that, h2 = 391 kJ/kg; h6 = 407 kJ/kg Determine: 1) the mass flow rate in the low pressure loop in kg/s 2) mass flow rate in the high pressure loop, in kg/s 3) total power requirement in KW 4.) COP 5.) heat rejected in the condenser, KW 6.) amount of cooling water needed for a temp rise of 130C. in kg/s 7.) amount of ice (kg)for a 10 hrs operation if the initial temp of water is 34 0C to ice at 40C. Answer in kg.
Please answer step by step
3. Asteady-flow Carnot refrigeration cycle uses refrigerant-134a as the working fluid. The refrigerant changes from saturated vapor to saturated liquid at 30°C in the condenser as it rejects heat. The evaporator pressure is 160 kPa. Determine a-the coefficient of performance b-the amount of heat absorbed from the refrigerated space c-the net work input