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

[C K Lee]

Hello, Safwan.

It depends on whether you have individual radiator for each zone or not. 
  If so, then you have to use individual radiative and convective load 
inputs for each zone.  If you only have the radiator installed in one 
zone, then you only need have radiative and convective load inputs for 
that particular zone.  The inter-zone heat transfer will be calculated 
by Type56 itself.

Best Regards
LEE, Chun Kwong


On 2015-09-22 09:11, s_wanone wrote:
> Dear Lee
> 
> Noted that. Ive simulated it using radiative and convective load to
> the zone by introducing heat tx to the gain of each zones.
> 
> If let say ive got 5 zones, should i sum up the heat tx by radiative
> for each zones to get the heat gain by the heating of radiator for the
> type56 for a particular time?
> 
> Thanks
> Safwan
> 
> Sent from my GT-I9305T on the Telstra 4G network
> 
> -------- Original message --------
> From: C K Lee <a8304506 at graduate.hku.hk>
> Date:
> To: "TRNSYS users mailing list at OneBuilding.org"
> <trnsys-users at lists.onebuilding.org>
> Cc: safone samsuddin <s_wanone at yahoo.com>
> Subject: Re: [TRNSYS-users] How to simulate HVAC and radiant thermal
> heat gain and power consumption in Type56
> 
> Hello, Safone.
> 
> You can define a gain type in Type56 which read the radiative and
> convective load delivered by the radiator through defined inputs of
> Type56. Your heat pump model should read the zone information from
> Type56 and output the respective radiative and convective loads
> developed for connection to the input of Type56. Of course, as David
> has mentioned, you need to add control equipment to control the
> operation of your heat pump.
> 
> Best Regards
> LEE, Chun Kwong
> Research Fellow
> City University of Hong Kong
> 
> On 2015-09-22 00:44, David BRADLEY wrote:
>> 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
>>> 
>>> _______________________________________________
>>> TRNSYS-users mailing list
>>> TRNSYS-users at lists.onebuilding.org
>>> 
>> 
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>>> [1]
>> 
>> --
>> ***************************
>> 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 [2]
>> http://www.trnsys.com [3]
>> 
>> 
>> Links:
>> ------
>> [1]
>> 
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>> [2] http://www.tess-inc.com
>> [3] http://www.trnsys.com
>> 
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at lists.onebuilding.org
>> 
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org