I found from few sources that:
1.COP is unit less but EER has unit(BTU/Kwh)
2.In cop work input is Mechanical work but in EER Work input is electrical
3.COP=EER*0.293
Is this correct?If you have any further information pls guide me
1) there is no unit of COP.
2) and 3)
the performance of air conditioners is expressed as Energy Efficiency Ratio (EER) OR seasonal energy efficiency ratio (SEER).
SEER is the ratio the total amount of heat removed by an air conditioner during a normal cooling season (in Btu) to the total amount of electricity consumed (in Wh)
Both EER and SEER has the unit of Btu/Wh.
1kWh = 3412 Btu
1Wh = 3.412 Btu
A device that removes 1kWh of heat from the cooled space for each kWh of electricity it consumes (COP=1) will have an ER of 3.412. therefore:
EER=3.412 COP
Or
COP=0.293 EER.
COP = Th/(Th - Tc) for a heat pump and COP = Tc/(Th - Tc) for an air conditioner, where Th is room temperature and Tc is outdoor or ground temperature for a heat pump, and Tc is room temperature and Th is outdoor or ground temperature for an air conditioner. Letting Qdot be the rate of heat flow, the required power is P = Qdot/COP = Qdot(Th - Tc)/Th for a heat pump and P= Qdot/COP = Qdot(Th - Tc)/Tc for an air conditioner. If Th - Tc is not too large, Qdot is proportional to Th - Tc, so P is proportional to (Th - Tc)^2/Th for a heat pump and P is proportional to (Th - Tc)^2/Tc for an air conditioner. Since ground temperature varies less than outdoor air temperature, both a heat pump and an air conditioner are generally more efficient using the ground as a heat source in winter for a heat pump and a heat sink in summer for an air conditioner.
COP – the ratio that measures the energy efficiency of the HEATING performance.
EER – the ratio that measure the energy efficiency of the COOLING performance.
Those who buy air conditioners usually get air conditioning by looking at their price and capacity. What is COP and what we are used to do not know our socks çoğumuz. However, the COP value is quite important when buying air conditioners.
COP is an abbreviation of "Coefficient of Performance" which means "Performance Coefficient".
The EER word consists of the initials of the definition which means "Energy Efficiency Ratio" or "Energy Saving Rate". A variant that shows the cooling efficiency of the EER value air conditioner. The higher the EER value is, the same as the COP value, your refrigerator will cool down with less energy. Those who want to get high cooling efficiency from their air conditioners should prefer air conditioners with a value of 3,20 and above. 3,20 EER rated airports are considered as energy class
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