It's a fairly simple formula that connects COP with EER. This equation is handy when determining the coefficient of performance for HVAC devices that use EER as a primary energy-efficient metric. Room air conditioners, for example, are the ones that can be compared based on the use of EER ...
EER = BTUcooling/W HSPF = BTUheating/W COP = Q (useful heat)/W (input work) ACH = CFM x 60/Area x Heightceiling Total Heat (BTU/hr.) = 4.5 x CFM x Δh (std. air) Sensible Heat (BTU/hr) = 1.1 x CFM x Δt (std. air) ...
we look at the gas mileage value when comparing vehicles, since a higher MPG results in fuel savings. The SEER or Seasonal Energy Efficiency Ratio is the metric used to describeunitary air conditioners,as well asair-source heat pumps operating in cooling mode. ...
Following are these simplified equations in both the British imperial system and metric units, along with two sample calculations. Note that imperial and metric equations yield results within 2% of each other depending on unit conversion accuracies. Tmin= (ft3x 0.41 x TD/Watts) + τMassmin...