Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
A vapor-compression heat pump has a heating capacity of 500 kJ/min and uses Refrigerant 134a as the working fluid. The isentropic compressor efficiency is 80%. The heat pump is driven by a power cycle with a thermal efficiency of 25%. For the power cycle, 80% of the heat rejected is transferred to the heated space. Data for the cycle are provided in the table below. The principal states are numbered in the Fig. 10.3. State p (bar) T (°C) 1 2.0122 -10 2s 2 3 45.17 52.47 9.6 34 2.0122 -10 10 10 h (kJ/kg) s (kJ/kg-K) 241.34 0.9253 0.9253 0.9512 0.3584 0.3779 274.63 282.95 97.31 97.31 www Condenser Expansion valve Compressor Evaporator www Saturated or superheated vapor FIG. 10.3 Components of a vapor-compression refrigeration system. a. Determine the power input to the heat pump compressor, in kW. b. Evaluate the ratio of the total rate that heat is delivered to the heated space to the rate of heat input to the power cycle. Discuss.

A vapor-compression heat pump has a heating capacity of 500 kJ/min and uses Refrigerant 134a as the working fluid. The isentropic compressor efficiency is 80%. The heat pump is driven by a power cycle with a thermal efficiency of 25%. For the power cycle, 80% of the heat rejected is transferred to the heated space. Data for the cycle are provided in the table below. The principal states are numbered in the Fig. 10.3. State p (bar) T (°C) 1 2.0122 -10 2s 2 3 45.17 52.47 9.6 34 2.0122 -10 10 10 h (kJ/kg) s (kJ/kg-K) 241.34 0.9253 0.9253 0.9512 0.3584 0.3779 274.63 282.95 97.31 97.31 www Condenser Expansion valve Compressor Evaporator www Saturated or superheated vapor FIG. 10.3 Components of a vapor-compression refrigeration system. a. Determine the power input to the heat pump compressor, in kW. b. Evaluate the ratio of the total rate that heat is delivered to the heated space to the rate of heat input to the power cycle. Discuss.

Elements Of Electromagnetics
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
icon
Related questions
Question
A vapor-compression heat pump has a heating capacity of 500 kJ/min and uses Refrigerant 134a as the working fluid. The isentropic compressor efficiency is 80%. The heat pump is driven by a power cycle with a thermal efficiency of 25%. For the power cycle, 80% of the heat rejected is transferred to the heated space. Data for the cycle are provided in the table below. The principal states are numbered in the Fig. 10.3. State p (bar) 2.0122 1 2s 2 3 4 10 10 T (°C) -10 45.17 52.47 34 9.6 2.0122 -10 h (kJ/kg) s (kJ/kg-K) 241.34 0.9253 274.63 0.9253 0.9512 0.3584 0.3779 282.95 97.31 97.31 Cout www Condenser Expansion valve Compressor Evaporator www Saturated or superheated vapor FIG. 10.3 Components of a vapor-compression refrigeration system. a. Determine the power input to the heat pump compressor, in kW. b. Evaluate the ratio of the total rate that heat is delivered to the heated space to the rate of heat input to the power cycle. Discuss.
Transcribed Image Text:A vapor-compression heat pump has a heating capacity of 500 kJ/min and uses Refrigerant 134a as the working fluid. The isentropic compressor efficiency is 80%. The heat pump is driven by a power cycle with a thermal efficiency of 25%. For the power cycle, 80% of the heat rejected is transferred to the heated space. Data for the cycle are provided in the table below. The principal states are numbered in the Fig. 10.3. State p (bar) 2.0122 1 2s 2 3 4 10 10 T (°C) -10 45.17 52.47 34 9.6 2.0122 -10 h (kJ/kg) s (kJ/kg-K) 241.34 0.9253 274.63 0.9253 0.9512 0.3584 0.3779 282.95 97.31 97.31 Cout www Condenser Expansion valve Compressor Evaporator www Saturated or superheated vapor FIG. 10.3 Components of a vapor-compression refrigeration system. a. Determine the power input to the heat pump compressor, in kW. b. Evaluate the ratio of the total rate that heat is delivered to the heated space to the rate of heat input to the power cycle. Discuss.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Power Plant Engineering
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.
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY
SEE MORE TEXTBOOKS