- #1
rayc
- 2
- 0
Hi All,
I'm doing a study on effects of outside temperature on the energy efficiency of air-conditioning systems in computer server farms/data centers.
It will be a simulated study so I cannot use the standard definition of COP;
COP = heat removed / work
At the same time I also want to examine the effect of the outside temperature. There for I've been using the following derivable definition for COP;
COP = 1 / (Th/Tl - 1)
where Th = the temperature of the hot, outside environment
and tl is the temperature of the inside. cool environment.
The problem I have is that in certain places, the outside temperature will be lower than the inside temperature, giving me a negative value for COP?? Any comment on this, is a negative COP realistic given that I'm doing work to move heat from a warm environment to a cooler one? or is this incorrect?
any help is appreciated.
I'm doing a study on effects of outside temperature on the energy efficiency of air-conditioning systems in computer server farms/data centers.
It will be a simulated study so I cannot use the standard definition of COP;
COP = heat removed / work
At the same time I also want to examine the effect of the outside temperature. There for I've been using the following derivable definition for COP;
COP = 1 / (Th/Tl - 1)
where Th = the temperature of the hot, outside environment
and tl is the temperature of the inside. cool environment.
The problem I have is that in certain places, the outside temperature will be lower than the inside temperature, giving me a negative value for COP?? Any comment on this, is a negative COP realistic given that I'm doing work to move heat from a warm environment to a cooler one? or is this incorrect?
any help is appreciated.