<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div><div></div><div>Dear Lee</div><div><br></div><div>Noted that. Ive simulated it using radiative and convective load to the zone by introducing heat tx to the gain of each zones. </div><div><br></div><div>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?</div><div><br></div><div>Thanks</div><div>Safwan</div><div><br></div><div><br></div><div><div style="font-size:75%;color:#575757">Sent from my GT-I9305T on the Telstra 4G network</div></div></div> <br><br><br>-------- Original message --------<br>From: C K Lee <a8304506@graduate.hku.hk> <br>Date: <br>To: "TRNSYS users mailing list at OneBuilding.org" <trnsys-users@lists.onebuilding.org> <br>Cc: safone samsuddin <s_wanone@yahoo.com> <br>Subject: Re: [TRNSYS-users] How to simulate HVAC and radiant thermal heat gain and power consumption in Type56 <br> <br><br>Hello, Safone.<br><br>You can define a gain type in Type56 which read the radiative and <br>convective load delivered by the radiator through defined inputs of <br>Type56. Your heat pump model should read the zone information from <br>Type56 and output the respective radiative and convective loads <br>developed for connection to the input of Type56. Of course, as David <br>has mentioned, you need to add control equipment to control the <br>operation of your heat pump.<br><br>Best Regards<br>LEE, Chun Kwong<br>Research Fellow<br>City University of Hong Kong<br><br>On 2015-09-22 00:44, David BRADLEY wrote:<br>> Safwan,<br>> Most of the HVAC equipment models include an output that will tell<br>> you how much energy they transferred to their air (or water) stream<br>> and also how much power they consumed. It sounds as though your model<br>> makes some use of the TRNBuild automatic heating and cooling types to<br>> calculate space load and some use of HVAC equipment to compute energy<br>> consumption. I would not recommend such a method. I would recommend<br>> that you disable the automatic heating and cooling in TRNBuild to<br>> allow the zone temperatures to float. You then implement thermostat<br>> models in the Studio to watch the zone temperature and command the<br>> HVAC equipment to turn ON and OFF appropriately so as to maintain your<br>> desired temperature in the zones of the building.<br>> regards,<br>> David<br>> <br>> On 09/21/2015 07:16, safone samsuddin wrote:<br>> <br>>> Hi Everyone,<br>>> <br>>> Does anybody know how to calculate HVAC power consumption such as<br>>> Heat Pump and using Radiator as heating emitter in Type 56 multizone<br>>> building?<br>>> Do I need to set the heating ON in TRNSBUILD for each zones with the<br>>> setpoint temperature?<br>>> I've simulate 2 scenarios with Heating ON and off using radiant heat<br>>> transfer into zones. When the Heating ON, the TAIR trending of the<br>>> zones will try to follow the setpoint.<br>>> <br>>> However, when HEATING is OFF, the temperature TAIR and Toperative<br>>> will follow according Thermostat setpoint, however, it always<br>>> overheating when sun radiation gave extra heating into the Type 56<br>>> house.<br>>> <br>>> Anyone can suggest me, what would be the best solution to calculate<br>>> energy consumption and heat gain of the zone?<br>>> <br>>> Regards<br>>> <br>>> Safwan<br>>> <br>>> _______________________________________________<br>>> TRNSYS-users mailing list<br>>> TRNSYS-users@lists.onebuilding.org<br>>> <br>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org<br>>> [1]<br>> <br>> --<br>> ***************************<br>> David BRADLEY<br>> Principal<br>> Thermal Energy Systems Specialists, LLC<br>> 22 North Carroll Street - suite 370<br>> Madison, WI 53703 USA<br>> <br>> P:+1.608.274.2577<br>> F:+1.608.278.1475<br>> d.bradley@tess-inc.com<br>> <br>> http://www.tess-inc.com [2]<br>> http://www.trnsys.com [3]<br>> <br>> <br>> Links:<br>> ------<br>> [1] <br>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org<br>> [2] http://www.tess-inc.com<br>> [3] http://www.trnsys.com<br>> <br>> _______________________________________________<br>> TRNSYS-users mailing list<br>> TRNSYS-users@lists.onebuilding.org<br>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org<br></body>