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Hi there,

I am working on a project using DesignBuilder/EnergyPlus, where I will need to model an air-to-water heat pump system with underfloor heating and natural ventilation. I checked the example IDF file named: RadLoHydrHeatCoolAutoCondFD provided by EnergyPlus, trying to get an idea how the underfloor systems can be modelled.

I encountered some problems going through the file: I understand the use of the ZoneHVAC:LowTemperatureRadiant object,which defines the underfloor heating/cooling, but I don't get the use of the following ones: Sizing:Zone, DesignSpecification:OutDoorAir, ZoneHVAC:EquipmentList, and ZoneHVAC:EquipmentConnections. In my opinion, the use of these objects is trying to model a system where there is air is supplied by and returned to the floor systems like an air-to-air AC instead of a underfloor heating.

I would appreciate it if you could point out the use of these objects in this context :) Thanks in advance！

Hi there,

I am working on a project using DesignBuilder/EnergyPlus, where I will need to model an air-to-water heat pump system with underfloor heating and natural ventilation. I checked the example IDF file named: RadLoHydrHeatCoolAutoCondFD provided by EnergyPlus, trying to get an idea how the underfloor systems can be modelled.

I encountered some problems going through the file: I understand the use of the ZoneHVAC:LowTemperatureRadiant object,which defines the underfloor heating/cooling, but I don't get the use of the following ones: Sizing:Zone, DesignSpecification:OutDoorAir, ZoneHVAC:EquipmentList, and ZoneHVAC:EquipmentConnections. In my opinion, the use of these objects is trying to model a system where there is air is supplied by and returned to the floor systems like an air-to-air AC instead of a underfloor heating.

I would appreciate it if you could point out the use of these objects in this context :) Thanks in advance！

Hi there,

I am working on a project using DesignBuilder/EnergyPlus, where I will need to model an air-to-water heat pump system with underfloor heating and natural ventilation. I checked the example IDF file named: RadLoHydrHeatCoolAutoCondFD provided by EnergyPlus, trying to get an idea how the underfloor systems can be modelled.

I encountered some problems going through the file: I understand the use of the ZoneHVAC:LowTemperatureRadiant object,which defines the underfloor heating/cooling, but I don't get the use of the following ones: Sizing:Zone, DesignSpecification:OutDoorAir, ZoneHVAC:EquipmentList, and ZoneHVAC:EquipmentConnections. In my opinion, the use of these objects is trying to model a system where there is air supplied by and returned to the floor systems like an air-to-air AC instead of a underfloor heating.

I would appreciate it if you could point out the use of these objects in this context :) Thanks in advance！