[Equest-users] DX cooling - custom curves

[R B]

There are two performance curves and five curves under capacity curves tab
for DX cooling. I was planning on generating just custom performance curves,
but was wondering if it is necessary to generate custom capacity curves
also? If yes, which of the capacity curves are critical to be customized
(total cap vs temps, sen cap vs temps, bypass factor vs temps, bypass factor
vs flow, and bypass factor vs part load).
Appreciate it if anyone who has done custom curves for DX cooling can chime
in.
On Tue, May 24, 2011 at 11:10 AM, R B <slv3sat at gmail.com> wrote:

> I want to compare RTU (DX cooling with evaporatively cooled condenser) with
> different compressors and am thinking of using curves this time around.
> I would like to confirm if the following is correct -
> 1. The first curve is EIR - f(t ent wb, t ent cond). I am assuming that t
> ent wb is the wet-bulb temperature of air entering the coil (i.e. the mixed
> air wet bulb temperature) - 67 F wet bulb ARI condition - and t ent cond is
> the OA dry bulb (95 F ARI condition).
> 2. For EIR vs PLR, the above ARI conditions should be kept constant and use
> the EIR for varying capacity.
>
> Thanks,
> -Rohini
>
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