[TRNSYS-users] Water-Water heat pump power consumption

David Bradley bradley at tess-inc.com
Fri Mar 26 08:47:11 PDT 2010


Roberto,
 I seem to remember that 4 or 5 years ago there was a bug in Type668 
that didn't correctly switch the power use off. What version of the 
TESSLibs do you have? It might be a good idea to make sure you have the 
latest version from your distributor.
Best,
 David


rgaray at labein.es wrote:
>
> Hello all,
>
> I´m working in a full-water HVAC system with a heat pump (type668) as 
> heat source and i´m getting results that seem ilogical:
> When no actuator is working, the resulting power consumption of the 
> heat pump is different than 0.
> The power consumtion remains the same as the one in the last instant 
> when it was turned ON.
>
> Does anyone know the reason for this?
> I have checked my proyect and the source code of the involved type 668 
> and haven´t found a solution. So any help would be appreciated.
>
> Thanks in advance.
>
> --------------------------------------------------------------------------
> Roberto Garay Martinez
> Labein-Tecnalia
> Unidad de Construcción y Desarrollo del Territorio
> c/Geldo. Parque Tecnológico de Bizkaia
> Edificio 700
> 48160 Derio (Bizkaia)
> Tel.: 34 94 607 33 00
> Fax: 34 94 607 33 49
> www.labein.es
> ---------------------------------------------------------------------------
> Visite nuestro blog:
> http://www.energiaenedificacion.com
> ------------------------------------------------------------------------
> Bilbao, 17-19 de Mayo, 2010
> Open and Sustainable Building
> Edificación Adaptable y Sostenible
> www.OpenBuilding-2010.org
> --------------------------------------------------------------------------
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>
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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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