[TRNSYS-users] water to water heat pump

[David BRADLEY]

Carol,
   A single-stage heat pump is either ON or OFF. There is no variation 
on the speed of the compressor so the heat pumps capacity is only a 
function of the inlet water conditions. In a two-stage device, either 
there are two compressors or there is a single compressor that can run 
at two different speeds. The heat pump's capacity now depends upon the 
inlet conditions and on the speed of the compressor. It basically has a 
"high heating/cooling" mode and a "low heating/cooling" mode.
Kind regards,
  David



On 8/31/2012 07:06, Pascual Ortiz, Carol wrote:
>
> Hi TRNSYS users,
>
> I would like to simulate  water  to water heat pump but I don't know 
> which type I have to use, Type 927 or type 1221? I have read that the 
> difference between them is the stage number, can anyone send me some 
> information about parameters/inputs/outputs to know what type  fits 
> better to my model?
>
> Thanks in advance,
>
> Kind Regards
>
> Carol Pascual
>
>
>
> _______________________________________________
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> TRNSYS-users at cae.wisc.edu
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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