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
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
COP a measure of heating efficiency but EER is a measure for colling efficiency.
Dear Auroshis Rout,
COP heating performance
EER- cooling performance
The terms COP (coefficient of performance) and EER (energy efficiency ratio) describe the heating and cooling efficiency of air conditioners. They indicate the ratio of heating or cooling provided by a unit relative to the amount of electrical input required to generate it. Thus, if an air conditioner generates 5kW of heat from a 1kW electrical input, its COP is said to be 5.0. Similarly, if an air conditioner generates 5kW of cooling from a 1kW electrical input its EER is also said to be 5.0. The higher the COP and EER, the more energy efficient is the equipment.
The ratio that measures the energy efficiency of the HEATING performance.EER – the ratio that measure the energy efficiency of the COOLING performance. ... Therefore the air conditioning that generates most heating out of 1kW is the most efficient, hence the higher the COP the more efficient is the air conditioning.
COP
The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required. Higher COPs equate to lower operating costs. COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. For example: A given heat pump used for air cooling has a COP = 2.
Formula; COP= Qcold/W= Tcold/Thot- Tcold
EER
EER stands for Energy Efficiency Ratio. The EER rating for an air conditioner iscalculated by dividing the BTU (British Thermal Units) rating by the wattage. For example, a 12,000-BTU air conditioner that uses 1,200 watts has an EER rating of 10 (12,000/1,200 = 10).
ENERGY STAR rated room air conditioners have an EER of about 10.7 or higher below 20,000 BTU, and 9.4 or better above 20,000 BTU. So look for EER ratings in that range to get the best portable air conditioner in terms of efficiency.
Formula, EER = -114.1-50.9*age (years) + PAL * (19.5*weight (kg) + 1161.4*height (m)), where PAL = 1 if sedentary, 1.12 if low active, 1.24 if active, and 1.45 if very active.
Hope this is helpful for you.
Ashish
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