Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion


Which of the following represents a heat pump?


Answer: Option B


No answer description available for this question.

Anand said: (Jun 8, 2014)  
Because heat engine absorbs temp from higher source and converts to work and sends the remaining energy to cold sink, where as its totally reverse in case of heat pump work is done to supply the heat from a cold source to heat source.

Ann Rufus A said: (Oct 23, 2014)  
Answer is A as "A heat pump is a machine or device that moves heat from one location (the 'source') at a lower temperature to another location (the 'sink' or 'heat sink') at a higher temperature using mechanical work".

What Anand has said is not right no heat is converted to mechanical work, mechanical work is done to remove heat from lower temperature area and transfer it to higher temperature area.

Heat pump acts like removing heat from earth and delivering that heat to the sun by using mechanical work.

Banty said: (Nov 1, 2014)  
I think answer is C as heat taken by pump and given to sink by doing work on pump.

Shekhar said: (Apr 28, 2015)  
B is right answer as work is done to remove heat from sink.

Mushahid Chohan said: (Jun 5, 2015)  
Reverse of Air Condition is Heat Pump. i.e. taking heat from high temperature reservoir to low temperature reservoir.

Virpalsinh Rana said: (Jun 8, 2016)  
I think answer C is right and I agree with Banty.

Rahul said: (Aug 9, 2016)  
In heat pump the heat absorb from low-temperature body and reject it to high-temperature body when work is done.

Megha said: (Aug 29, 2016)  
B is the correct answer as heat is extracted from the lower temperature body and to do this a we have to supply work.

Karan said: (Feb 6, 2017)  
I think the answer is c.

Because B is for refrigeration.

Ravi Kavvala said: (Feb 12, 2017)  
B is correct one. I agree.

Vijay said: (Mar 14, 2017)  

Option A is for HEAT ENGINE.

Mangesh said: (Jul 22, 2017)  
B is the correct answer. The Heat pump is a device which extracts the heat from low temp. Sink and delivers, it to high temp. Source when the input is supplied.

Biren said: (Aug 30, 2017)  
Simple in heat engine higher to lower and get work.

Pump and in ref Both we have to give work but in a pump, we req higher temp so it's from lower to high and reverse in ref.

Lekha said: (Mar 1, 2018)  
Thanks for the given explanation.

Akinsade said: (Apr 8, 2018)  
Heat pump takes heat from body at lower temperature delivers to body at high temperature while work is being done on the system. It is refrigeration system.

Alok said: (Sep 6, 2018)  
The correct Answer is A.

Gaurang Patel said: (Mar 7, 2019)  
C is the right answer bcoz sink like water mag and source like the sea.

Krishna Mit Indore said: (May 11, 2019)  
The source which gives an infinite amount of heat.
And sink which can receive an infinite amount of heat.

The correct answer is C

Heat pump and refrigerator always required work. And heat pump surrounding is source and room which we need to keep warm is sink.

So, the correct answer is "C"

Ajay said: (Jul 1, 2019)  
Answer is C.

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