[TRNSYS-users] outlet temperature, water to water heat pump

[David Bradley]

Mavi,
 Heat pumps can't really do that - they are either on and operating at 
whatever capacity they have available given the entering water 
conditions or they are off. Unless they are multistage heat pumps, they 
can't load follow and provide a constant outlet temperature regardless 
of the inlet temperature. In reality and in simulation, you would have 
to look for a method of actually doing that. One thing you could try is 
to have a bypass valve upstream of the heat pump, oversize the heat pump 
so that it can always heat or cool the liquid enough and then divert 
some of the upstream liquid around the heat pump and mix it back in 
downstream like a tempering valve.
Best,
 David


Mavi Cambronero Vázquez wrote:
> Hi everybody!!
>  
> I´d like to get a fixed outlet temperature from a water-water heat 
> pump. Do you know how to do it???
>  
> Thank you!!!
> ------------------------------------------------------------------------
>
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> TRNSYS-users at cae.wisc.edu
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Thermal Energy System Specialists (TESS), LLC 
David BRADLEY                      22 N. Carroll Street - Suite 370 
Partner                            Madison, WI 53703 
                                   USA
P: +1.608.274.2577 
F: +1.608.278.1475
E-mail: bradley at tess-inc.com 
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