COP = Coefficient of Performance
ref = for a refrigeration cycle
hp = for a heat pump cycle
Qi = Heat flux in
Qo = Heat flux out
Wi = Work in
33.1
COP(ref) = Qi/(Wi)
33.2
COP(hp) = (Qi+Wi)/Wi
therefore
COP(ref) = COP(hp)-1
and
COP(hp) = COP(ref)+1
That makes sense: COP(hp) = (Qi+Wi)/Wi = Qi/Wi + Wi/Wi = COP(ref) + 1
EER is the same thing except that the units on the top and bottom are different:
33.3
COP = 3.41 X COP
33.4
EER(ref) = Qi(btu/h) / Wi(watts)
33.5
EER(hp) = [Qi(btu/h)+Wi(btu/h)] / Wi(watts)
similar to COP:
EER(hp) = Qi(btu/h)/Wi(watts) + Wi(btu/h)/Wi(watts) = EER(hp) + Wi(btu/h)/Wi(watts)
Since the numerator work is in btu/h and the denominator work is in watts, the second term is not 1, it is 3.41. However, 33.5 states:
EER(hp) = EER(hp) + 1
Am I losing my mind from studying for this too much, or is this a mistake in the MERM? If I find a mistake in the MERM, will they give me a PE license without having to take the test?
ref = for a refrigeration cycle
hp = for a heat pump cycle
Qi = Heat flux in
Qo = Heat flux out
Wi = Work in
33.1
COP(ref) = Qi/(Wi)
33.2
COP(hp) = (Qi+Wi)/Wi
therefore
COP(ref) = COP(hp)-1
and
COP(hp) = COP(ref)+1
That makes sense: COP(hp) = (Qi+Wi)/Wi = Qi/Wi + Wi/Wi = COP(ref) + 1
EER is the same thing except that the units on the top and bottom are different:
33.3
COP = 3.41 X COP
33.4
EER(ref) = Qi(btu/h) / Wi(watts)
33.5
EER(hp) = [Qi(btu/h)+Wi(btu/h)] / Wi(watts)
similar to COP:
EER(hp) = Qi(btu/h)/Wi(watts) + Wi(btu/h)/Wi(watts) = EER(hp) + Wi(btu/h)/Wi(watts)
Since the numerator work is in btu/h and the denominator work is in watts, the second term is not 1, it is 3.41. However, 33.5 states:
EER(hp) = EER(hp) + 1
Am I losing my mind from studying for this too much, or is this a mistake in the MERM? If I find a mistake in the MERM, will they give me a PE license without having to take the test?