[TRNSYS-users] Fan coil with heat pump

David BRADLEY d.bradley at tess-inc.com
Mon Nov 9 08:03:02 PST 2020


Dr Bina,

   I would guess that the cause of the error is that the cooling data 
file doesn't have the correct number of data values in it or else that 
it does not exist where it is expected to be found. The file is not 
accessed until it is needed so it makes sense that the error would not 
appear until cooling is required in the building.

In "supply air conditioning" you want to select "external by another 
component" and then select "userdefined" for both the temperature and 
the humidity. Define input variables for each of these. When you save 
your changes in TRNBuild and return to the Studio you will have three 
new inputs (mass flow rate, temperature, and relative humidity) for the 
air that is going into that zone of the building. These will be passed 
from the fan coil model.

kind regards,

  David


On 11/08/2020 03:15, saeid mohammadzadeh via TRNSYS-users wrote:
> Dear users;
> I have modeled a water-to-water heat pump which is connected to a fan 
> coil (type 600). The fan coil is connected to a building (Type 56).
> for connection, I defined input as ventilation. When the system shifts 
> to cooling mode, the system gives an error and stops suddenly.
> I have another question regarding the ventilation inputs for fan coil:
> In "supply air conditioning" fan coil is an "external by other 
> component" or internal calculation?
>
> //Best Regards//
> /Saeid Mohammadzadeh Bina, Dr. (Eng.)/
> //-------------------------------------------------//
> /Akita University/
> /Graduate school of International Resource Sciences//.
> 1-1 Tegata gakuen-machi, Akita 010-8502, Japan/
> /Tel: //+815068665026 (Japan)/
> / +989141011757 (Iran)///
> /E-mail: //d9515254 at s.akita-u.ac.jp/ 
> <mailto:s.mohammadzadeh66 at gmail.com>//
> /mohammadzadehsaeid at yahoo.com <mailto:mohammadzadehsaeid at yahoo.com>/
> //-------------------------------------------------
>
> //
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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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