FUND OF ENG THERMODYN(LLF)+WILEYPLUS
9th Edition
ISBN: 9781119391777
Author: MORAN
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Question
error_outline
This textbook solution is under construction.
Students have asked these similar questions
What is a heat pump and explains its purpose?
(i need to do a presentation. can you explained to me about this)
Problem Statement
A heat engine receives heat at a rate of 15 kW from a reservoir at 400 K. It delivers all of the
shaft power it produces to a heat pump that delivers 25 kW of heat transfer to a reservoir
at 350 K. The heat pump draws heat from a reservoir at 320 K. What is the temperature of
the warmest region that the heat engine can reject heat to?
Answer Table
Stage
Description
1
Max COP for heat pump
2
Shaft power (kW)
3
Max thermal efficiency of heat engine
4
Warmest region temperature (K)
Your Answer
Correct
Answer
*
Due Date
Grade
(%)
Part
Weight Attempt Action/Message Type
Nov 7, 2024 11:59 pm
0.0
1
1/5
Submit Stage 1
Nov 7, 2024 11:59 pm
Nov 7, 2024 11:59 pm
0.0
1
1/5
0.0
1
1/5
Nov 7, 2024 11:59 pm
0.0
1
1/5
Problem 06.107-Minimum heat pump power
A heat pump is used to heat a house and maintain it at 24°C. On a winter day when the outdoor air temperature is -5°C, the house is
estimated to lose heat at a rate of 81000 kJ/h. Determine the minimum power required to operate this heat pump. (Round the final
answer to three decimal places.)
The minimum power required to operate this heat pump is
kW.
Knowledge Booster
Similar questions
- Assess the factors that influence the economics of heat pumps.arrow_forwardA geothermal heat pump with a coefficient of performance of 1.3 supplies a building with 48000 BTU/hr of heat. Assuming a $0.20/kWh electricity rate. Provide responses to the following questions about this system: a. How much would it cost per month to supply heat at a rate of 48000 BTU/hr using a basic electrical resistance heater? b. In that month, how much heat is extracted from the earth by the heat pump, in kWh? c. What is the monthly savings associated with using this heat pump vs a basic electrical resistive heater?arrow_forwardNonearrow_forward
- What is the heat source? Write briefly. What should be the characteristics of the heat sources used in heat pumps? Write.arrow_forwardExplain why a heat pump system is more cost-effective in winter season in Alaska but not in houses in Cameron Highlands.arrow_forwardWhat is a heat pump and explains its purpose?arrow_forward
- A homeowner is trying to decide whether to heat with a furnace rated at 95% efficiency or by an electrically powered heat pump. She lives in a town where electricity is produced by a coal-fired power plant that claims to operate with 1st law efficiency that is 55% of the Carnot limit. The heat pump's CoP is advertised to be 40% of the Carnot limit. For what range of outside temperatures To would the 2nd law efficiency of the furnace be greater than that of the heat pump? Assume T+ = 400°C, T- = T= 40°C. %3Darrow_forwardPls. Answer thank you! An air-conditioning system is used to maintain a house at 65°F when the temperature outside is 85°F. The house is gaining heat through the walls and windows at a rate of 1250 Btu/min, and the heat generation rate within the house from people, lights, and appliances amounts to 350 Btu/min. Determine the minimum power input required for this air-conditioning systemarrow_forwardplease provide full calculations thank youarrow_forward
- Prepare a report on the heating systems available in your area for residential buildings. Discuss the advantages and disadvantages of each system and compare their initial and operating costs.arrow_forwardQUESTION 1 A manufacturer conducted an experiment for an evaporator capacity 533 kW cooling and designed for high COP of 1.8 when using lithium bromide plus water in an absorption refrigeration system. The evaporator operates 20 C, condenser 40 C & absorber 45 C supplying 1.4 kg/s of water plus lithium bromide solution to the generator. For a condenser size of 608 kW, determine: Heat provided by the generator & absorber capacity in kW (equating overall heat balance of all heat exchanger). Show in the Solution Paper: Heat provided by the generator Provide in the Answer Box: Absorber Capacity in kW Answer in two decimal placesarrow_forwardWhat are the different Heat pump circuits? Explain any one of them with the help of neat sketcharrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning