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[EnergyPlus_Support] How to model 2-Piped FCU that has Electric Resistance Heater using HVACTemplate
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- Subject: [EnergyPlus_Support] How to model 2-Piped FCU that has Electric Resistance Heater using HVACTemplate
- From: "hisham.rashrash" <hisham.rashrash@xxxxxxxxx>
- Date: Sun, 15 Sep 2013 07:22:22 -0000
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- Delivery-date: Sun, 15 Sep 2013 10:13:37 -0600
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I am using EnergyPlus v7.2, and I need to model FCUs as HVACTemplate:Zone:FanCoil objects, but I need them to have electric heating rather than boiler hot water coils. But the software seems to force modeling boiler hot water coils. So, I tried to model the proposed design FCUs in two stages:
1. Pretending that I have a boiler and a hot water loop and put the heating set point to an impossibly low temperature so that the boiler won't operate, and I put Always off schedule in the heating coil availability schedule entry in the FanCoil object, and thus the heating load is zero in the results HTML output tables.
2. Copy the idf into a new file, which will be dedicated to modeling proposed electric heating FCUs, to find "Heating" annual energy consumption results, and for this I use HVACTemplate:Zone:VAV:FanPowered objects. And just take the "Heating" annual energy consumption value from the results and ignore everything else.
I know that this method is time consuming, since it needs another simulation run dedicated for only finding "Heating" consumption; moreover, I'm not sure if it is okay to add interior fan power consumption of the above two simulations results to find the total annual interior fan energy consumption.
Please, is there a (better) way to model FCUs having electric heating using templates? and if the answer is no, is my approach above correct?
Thank you and best regards,
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