[TRNSYS-users] How to simulate HVAC and radiant thermal heat gain and power consumption in Type56

[David BRADLEY]

Safwan,
   Most of the HVAC equipment models include an output that will tell 
you how much energy they transferred to their air (or water) stream and 
also how much power they consumed. It sounds as though your model makes 
some use of the TRNBuild automatic heating and cooling types to 
calculate space load and some use of HVAC equipment to compute energy 
consumption. I would not recommend such a method. I would recommend that 
you disable the automatic heating and cooling in TRNBuild to allow the 
zone temperatures to float. You then implement thermostat models in the 
Studio to watch the zone temperature and command the HVAC equipment to 
turn ON and OFF appropriately so as to maintain your desired temperature 
in the zones of the building.
regards,
  David


On 09/21/2015 07:16, safone samsuddin wrote:
> Hi Everyone,
>
> Does anybody know how to calculate HVAC power consumption such as Heat 
> Pump and using Radiator as heating emitter in Type 56 multizone building?
> Do I need to set the heating ON in TRNSBUILD for each zones with the 
> setpoint temperature?
> I've simulate 2 scenarios with Heating ON and off using radiant heat 
> transfer into zones. When the Heating ON, the TAIR trending of the 
> zones will try to follow the setpoint.
>
> However, when HEATING is OFF, the temperature TAIR and Toperative will 
> follow according Thermostat setpoint, however, it always overheating 
> when sun radiation gave extra heating into the Type 56 house.
>
> Anyone can suggest me, what would be the best solution to calculate 
> energy consumption and heat gain of the zone?
>
> Regards
>
> Safwan
>
>
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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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