Cooling Coil Has no Rated Capacity Input

grasshopper ironbug
1

Was trying to hardcode the capacity for a water cooling coil but it seems to be missing that input while the heating coil has it.

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1 Like
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@MingboPeng I would be thankful if take a look at this question. I have the same problem as well.

3

Hi @ehsan.anvary, @Elliot_Glassman. I do not believe that the Coil:Cooling:Water has a rated capacity input.
Neither the E+ documentation for the Coil:Cooling:Water has a rated capacity input, as well as the openstudio application not having a rated capacity input for Coil:Cooling:Water

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I hope that is helpful
-trevor

4

@TrevorFedyna Thank you for your answer. so what should I do when want to model an FCU unit based on this document? In this climate just cooling load needed and the capacity is for cooling.

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5

I have a similar issue when trying to hard code the capacity [W] of the cooling coils. I’ve been looking into the SizingSystem of the Airloop, trying to put a cap on the CoolingDesignCapacity. However this is not respected by either cooling coils in the supply Air Loop or by cooling coils as equipment in thermal Zones.

Alternatively you can use a single speed cooling coil and cap the RatedTotalCoolingCapacity. However this is not the perfect solution as the capacity is based on fixed rated conditions. See my post on the topic here:Cooling Coil Total Cooling Rate ≠ Gross Rated Total Cooling Capacity.

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Thank you very much for mentioning this. I’ll consider it.