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Hi,

I am trying to model a dedicated outdoor air system (DOAS) in EnergyPlus using HX assisted water-to-air cooling coil. I want the 'CoilSystem:Cooling:Water:HeatExchangerAssisted' object to work as a cooling coil wrapped with a desiccant.

Since the object doesn't support 'HeatExchanger:Desiccant', I am trying to adopt the 'HeatExchanger:AirToAir:SensibleAndLatent' instead, for it to simulate the desiccant.

However, the Engineering Reference recommend the 'HeatExchanger:AirToAir:SensibleAndLatent' to be coupled with the HX assisted cooling coils only for sensible heat exchange cases. Meanwhile, I detect latent heat exchange rate (and energy) from the 'HeatExchanger:AirToAir:SensibleAndLatent' when coupled with the HX assisted coils.

Anyone know what the potential problem would be for using the HX for such HX assisted water-to-air cooling coils? Can I use the HX to work as a desiccant?

Thank you in advance.

Hi,

I am trying to model a dedicated outdoor air system (DOAS) in EnergyPlus using HX assisted water-to-air cooling coil. I want the 'CoilSystem:Cooling:Water:HeatExchangerAssisted' object to work as a cooling coil wrapped with a desiccant.

Since the object doesn't support 'HeatExchanger:Desiccant', I am trying to adopt the 'HeatExchanger:AirToAir:SensibleAndLatent' instead, for it to simulate the desiccant.

However, the Engineering Reference recommend the 'HeatExchanger:AirToAir:SensibleAndLatent' to be coupled with the HX assisted cooling coils only for sensible heat exchange cases. Meanwhile, I detect latent heat exchange rate (and energy) from the 'HeatExchanger:AirToAir:SensibleAndLatent' when coupled with the HX assisted coils.

Anyone know what the potential problem would be for using the HX for such HX assisted water-to-air cooling coils? Can I use the HX to work as a desiccant?

Thank you in advance.