NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider a two-stage cascade refrigeration cycle with a flash chamber as shown in the figure with refrigerant-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 this flashing process, and this vapor 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. Assume that the refrigerant leaves the evaporator as a saturated vapor and the isentropic efficiency is 86 percent for both compressors. (Take the required values from saturated refrigerant-134a tables.)

NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider a two-stage cascade refrigeration cycle with a flash chamber as shown in the figure with refrigerant-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 this flashing process, and this vapor 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. Assume that the refrigerant leaves the evaporator as a saturated vapor and the isentropic efficiency is 86 percent for both compressors. (Take the required values from saturated refrigerant-134a tables.)

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 simple steam cycle consists of a boiler, turbine, condenser and feed pump. Heat is supplied to the…

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

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

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: IWU-stage casčade retrigeration system operating between the pressure limits of 0.8 and 0.14 MPa.…

Q: two stage cascade refrigeration system uses R-12 in the high pressure loop with a condenser…

A: High Pressure loop uses R−12 with following properties Condenser temperature = 30°C Evaporator…

Q: Refrigerant 134a is the working fluid in a vapor-compression heat pump system with a heating…

A: According to the question data at the inlet of the condenser P2=300lb/in2 T2 = 200 deg F data at…

Q: 3- Asteady-flow Carnot refrigeration cycle uses refrigerant-134a as the working fluid. The…

A: The term refrigeration means cooling a space, substance, or system to lower and/or maintain its…

Q: An ideal vapor-compression refrigeration cycle using refrigerant-134a as the working fluid is used…

A: 1.At State 1Mass Flow rate of Refrigerant The Evaporator Temperature of Refrigerant Now, At…

Q: Avapor-compression refrigeration system with a capacity of in = 10 tons has Refrigerant 134a as the…

Q: A vapor-compression refrigeration system with a capacity of 10 tons has Refrigerant 134a as the…

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

Q: 2. In an ammonia vapor compression refrigeration cycle, 5 kg/min of refrigerant are circulated. The…

Q: Thermodynamics: A refrigeration unit using Refrigerant-134a is used to maintain a certain space at…

A: Given Data Mw=0.2 kg/s Twi=35°C Two=15°C Condenser Inlet: 0.8 MPa, 40°C Condenser outlet:0.8 MPa,…

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

Q: An R-134a vapor-compression refrigeration system operates as a heat pump (i.e., in heating mode). If…

A: Condenser Pressure, Pc = 200 psia Evaporator Pressure, Pe = 10 psia Compressor isentropic…

Q: Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the ideal…

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

Question

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: Objective

VIEW

Step 2: System Analysis

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 7 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

A two stage cascade refrigeration system uses R-12 in the high pressure loop with a condenser temperature of 300C and -100C in the cascade condenser, and R-22 in the low pressure loop with a temperature in the cascade condenser of 00C and an evaporator temperature of -30 0C. Given that, h6 = 366 kJ/kg; h2= 421 kJ/kg. Determine the amount of ice (kg)for a 10 hrs operation if the initial temp of water is 31 0C to ice at --80C. ANSWER: 7358.9169 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 24 tons. Given that, h2 = 393 kJ/kg; h6 = 408 kJ/kg. Determine the ff: a.) amount ofwater for a 10 hrs operation if the initial temp of water is 34 0C to 20C. ANSWER: 22656.8019kg b.) amount of cooling water needed for a temp rise of 130C. ANSWER: 1.9446 c.) heat…
Please answer fast..
A Carnot vapor refrigeration cycle uses R-134a as the working fluid. The refrigerarit enters the condenser as saturated vapor at 28°C and leaves as saturated liquid. The evaporator operates at a temperature of -10°C. For every kg of refrigerant flow, calculate the work of compression, kJ
A two stage cascade refrigeration system uses R-12 in the high pressure loop with a condenser temperature of 300C and -100C in the cascade condenser, and R-22 in the low pressure loop with a temperature in the cascade condenser of 00C and an evaporator temperature of -30 0C. The refrigeration load is 28 tons. h6 = 366 kJ/kg; h2= 421 kJ/kg Determine the ff:a.) the mass flow rate in the low pressure loop,ANSWER: 0.5097287949549 kg/s b.) the mass flow rate in the high pressure loop,ANSWER: 0.94987995754451 kg/s c.) total power requirementANSWER: 32.1224 KW
A vapor-compression refrigeration system which utilizes refrigerant 134a as the working fluid comprises the two-stage compression configuration seen in the schematic below, with intercooling between the stages. 5 Condenser Expansion valve High-pressure compressor 6 3 Flash chamber 9 2 7 Expansion valve Low-pressure compressor Evaporator 1 The direct contact heat exchanger and the flash drum operate at 4 MPa, and the condenser pressure is 1.2 MPa. Saturated vapor at -30 °C enters the first compressor stage. Saturated liquid streams at 0.4 MPa and 1.2 MPa enter the low- and high-pressure expansion valves, respectively. The refrigeration capacity of the system is estimated to be 35.2 kW and each compressor is assumed to operate isentropically. Evaluate each compressor power input and the overall coefficient of performance of the system.
An ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid is maintains a condenser at 1000 Kpa and the evaporator 40C. Determine the COP and the amount of power required to service a 400 KW cooling load.
saturated liquid from condenser Pcond = 900 kPa mcond =0.05 kg/s mcomp refrigerant to compressor ank- 500 kPa 3 rim mup Başka yönergeler almak için tıklayın Figure illustrates a vapor separator that is part of a refrigeration system. Saturated liquid R134a leaves the condenser at State 1 with a mass flow rate of 0.05 kg/s and pressure of 900 kPa. This refrigerant enters the vapor separator (a large, insulated tank) through a valve. The pressure in the tank is 500 kPa. There is no pressure drop due to flow through the tank (i.e., the pressure at States 2, 3, and 5 are all the same). The flow at State 2 is two-phase. The liquid portion of this flow falls to the bottom of the tank due to gravity while the vapor portion remains at the top. The saturated liquid is drawn from the bottom of the tank (at State 3). The saturated vapor is drawn off of the top of the tank at State 5 and fed to a compressor. Assume that the vapor separator is adiabatic, rigid, and operating at steady state. a) The…
Please only answer question 4 Parts C and D
Subject Thermodynamics. Instructions: Don't round off in the process. Just round off in the final answer with 2 decimals only. Use 273.15 K to convert Celsius to Kelvin
Working fluid is Refrigerant 134a. Vapor-compression refrigeration system has refrigerating capacity = 1650 Btu/hour. Refrigerant enters evaporator at -10F and leaves at 15F. Isentropic compressor efficiency = 74%. Refrigerant condenses at 140F and leaves condenser subcooled at 100F. No large pressure drops through evaporator and condenser. DETERMINE: 1. Pressure of evaporator in lbf/in^2 2. Pressure of condenser in lbf/in^2 3. Mass flow rate in lb/s of refrigerant 134a. 4. Power input in horsepower of compressor. 5. Coefficient of performance.
MODULE: THERMODYNAMIC QUESTION 5 Consider a two-stage cascade refrigeration cycle with a flash chamber as shown in the figure with refrigerant-134a as the working fluid. The evaporator temperature is −10.09°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 0.4 MPa. Part of the refrigerant evaporates during this 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. Assuming the refrigerant leaves the evaporator as a saturated vapour determine the COP of this refrigerator. NOTE: Your answer should be in 2 decimal places.