Look up “heat pump” on the Internet. What can you find out about the coefficient of...

Look up “heat pump” on the Internet. What can you find out about the coefficient of performance (COP)? What is the cost? Would a heat pump be a good investment in the area where you live? (Don’t guess. Work out some numbers.)

Expert Solution

Heat Pump :

Heat Pump is a device which applies external work to extract an amount of heat Q_c from cold reservior and delivers heat Q_H to hot reservior

COP :

Coefficient of performance (COP) for a heat pump is the ratio of energy transferred for heating to the input electric energy used in the process.

COP = Q_H/W

= Q_H/(Q_H-Q_C)

Cost:

Cost of a Heat pump Brand Americal Standards is aprrox. $7,790

Consideration:

Heat pump should be installed in a area where Heating loads should not be much larger.

For example , In Canada , heating loads are larger than cooling loads, if heat pump is sized to match heating load , it will be too large for the cooling requirement . This may reduce the performance and its ability to provide dehumidification in summer.

A heat pump should be selected in a manner that would meet 80 to 90 percent of the anual heating load and would have a balance point between 0°c and -5°c.

genius_generous answered 2 years ago

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