If you set a central heating supply of 32.1 and do the same at zone level, the reheat coil sees the same temperature at its inlet and outlet, resulting in zero capacity.
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Germán Campos
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Germán Campos
Aurea Consulting Â
www.ecoeficiente.es
www.ecoeficiente.es
2018-03-15 12:32 GMT+01:00 Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx>:
That is as per G3.1.2.9..1, sized supply-air-to-room-air temperature difference of 20degF (11.1degC) . All the Spaces winter set-point is 21degC so central heating design supply air tempretaire is 32.1 degC.On Thu, Mar 15, 2018 at 4:55 PM, Germán Campos ecoeficiente@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@yahoogroups.com > wrote:ÂWhich are heating design supply temperatures in system and zone sizing?
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Germán CamposAurea Consulting Â
www.ecoeficiente.es2018-03-15 11:53 GMT+01:00 Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@yahoogroups.com >:ÂDear All,I assigned a typical VAV system (Baseline System 5) with reheat but there are many heating unmet hours in the zones served by the system. I did most of the quality checks (correct OA, zone setpoints, zone and system sizing etc.) to see where the problem lies. And i found ' AirTerminal:SingleDuct:VAV:Reheat' is NOT active or sizing is zero in HTML report. To further ascertain the cause of the problem, I plotted temperatures [ see attachment] at all the nodes to see the temperature regime. This also shows that reheat coil doesn't raise the air temperature to meet the room set-point. ÂThis is being simulated for CZ5A.I also tried to look out for some solutions discussed here [ LINK LINK ] but unfortunately nothing works for me.ÂI would appreciate any help in this regard.Thank you, Â--Javed Iqbal, LEED AP, CEASr. Energy AnalystÂ--Javed Iqbal, LEED AP, CEASr. Energy AnalystÂ
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