[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [TRNSYS-users] air-to-water heat pump with infinitely variablecompressor control




Dear Johannes,

I am not familiar with the TS Type372 or infinitely variable compressor control, but I can tell you that all three TESS AWHP components are based on a performance map with the maximum compressor power parameter. How to model something like this, I am not sure, but perhaps the TRNSYS Type42 could be of use if the compressor power is an independent variable?

Best regards,

Matt Duffy

----- Original Message -----
From: "Schrade, Johannes" <johannes.schrade@ibp.fraunhofer.de>
Sent: Wed, July 13, 2011 8:33
Subject: [TRNSYS-users] air-to-water heat pump with infinitely variablecompressor control

Dear TRNSYS users,

 

I’m looking for an air-to-water-heat pump type, which allows an infinitely variable control of its compression power, for TRNSYS 16 or 17.

As far as I know, the only type, which comes into consideration is type 372, one of the TRANSSOLAR non-standard types.

Unfortunately, up to now, my institution is exclusively working with the TESS libraries, and we have so far no access to this type 372.

 

Thus, in order to avoid unnecessary expenses, my questions are:

 

1. &n! bsp;     Is there really no type in the TESS libraries for modeling such an air-to-water heat pump with infinitely variable compressor control?

2.       If there is really not such type available, do you have an idea how to simulate such a heat pump with one of the single-stage heat pump types existing in the TESS libraries?

3.       Is it possible with type 372 to define ranges for the infinitely variable control (100% to 40% of total capacity) and an oscillating control (below 40% total capacity).

 

Thanks in advance for your help.

 !

Kind regards,

Johannes

 

 

Johannes Schrade
Abteilung Wärmetechnik

Fraunhofer-Institut für Bauphysik
Nobelstr. 12
70569 Stuttgart

johannes.schrade@ibp.fraunhofer.de
Telefon 0711 / 970-3416
Telefax 0711 / 970-3399
www.ibp.fraunhofer.de/wt/

!

Johannes Schrade
Department Heat Technology

Fraunhofer Institute for Building Physics
Nobelstr.
12
70569 Stuttgart, Germany

johannes.schrade@ibp.fraunhofer.de
Phone +49 711 / 970-3416
Fax +49 711 / 970-3399
www.ibp.fraunhofer.de/wt/

 


_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users