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
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-------- Original message --------
From: C K Lee <a8304506@graduate.hku.hk>
Date:
To: "TRNSYS users mailing list at OneBuilding.org"
<trnsys-users@lists.onebuilding.org>
Cc: safone samsuddin <s_wanone@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
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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@tess-inc.com
http://www.tess-inc.com [2]
http://www.trnsys.com [3]
Links:
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[3] http://www.trnsys.com
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