Are there any possibilities of creating custom HVAC equipment and defining the operation of such a system?

asked 2022-03-20 22:35:28 -0600

Barigous
21 ●2

I want to create custom HVAC equipment that does the same thing as an EVAP cooler but cools the air to a specific relative humidity, say 80%, rather than 100%. Are there any possibilities of creating custom HVAC equipment and defining the operation of such a system?

answered 2022-03-21 08:26:49 -0600

rraustad

13814 ●79 ●12 http://www.fsec.ucf.edu/

I'm not sure if this is what you are looking for but there are user defined components in EnergyPlus. You can read the documentation for each of these and look for the example file that shows how each are used. See ExampleFiles-ObjectsLink.html in the example files folder (e.g., EMSUserDefinedWindACAuto.idf).

RoomAir:TemperaturePattern:UserDefined,
ZoneHVAC:ForcedAir:UserDefined,
AirTerminal:SingleDuct:UserDefined,
Coil:UserDefined,
PlantComponent:UserDefined,
PlantEquipmentOperation:UserDefined,

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I figured out how to address the issue using EMS on EnergyPlus. Thanks so much.

Barigous ( 2022-03-23 11:52:27 -0600 )edit

You should probably answer your own question so others know how you solved this.

rraustad ( 2022-03-23 15:35:00 -0600 )edit

I customized my evaporative cooler setting by going through the EMS code on the "EMSAirflowNetworkOpeningControlByHumidity.idf" example file. The control of my evaporative cooler was achieved using an input node sensor and an output node actuator, as well as a 'near-linear relationship' between the dew point and relative humidity.

EMS opening control example file https://bigladdersoftware.com/epx/doc...

Relationship between dewpoint and temperature http://climate.envsci.rutgers.edu/pdf...

Barigous ( 2022-03-24 13:29:18 -0600 )edit

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Are there any possibilities of creating custom HVAC equipment and defining the operation of such a system?