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I want to model a tank-style condensing domestic water heater.

It seems that the EnergyPlus WaterHeater:Mixed only accepts a quadratic curve, function of Part Load Ratio (PLR) only, whereas a biquadratic curve function of PLR and return water temp is warranted.

So I'd tend to go ahead and use a Boiler:HotWater and a WaterHeater:Mixed for which I'd at least put the Heater Maximum Capacity to zero to simulate a simple storage tank.

• Should I put the boiler and the tank in series on one supply branch?

• What parameters for the WaterHeater:Mixed should I use, especially Deadband temperature, control type?

• What kind of setpoint managers and availability managers and where?

Any example of a working setup would be much appreciated.

I want to model a tank-style condensing domestic water heater.

It seems that the EnergyPlus WaterHeater:Mixed only accepts a quadratic curve, function of Part Load Ratio (PLR) only, whereas a biquadratic curve function of PLR and return water temp is warranted.

So I'd tend to go ahead and use a Boiler:HotWater and a WaterHeater:Mixed for which I'd at least put the Heater Maximum Capacity to zero to simulate a simple storage tank.

• Should I put the boiler and the tank in series on one supply branch?

• What parameters for the WaterHeater:Mixed should I use, especially Deadband temperature, control type?

• What kind of setpoint managers and availability managers and where?

Any example of a working setup would be much appreciated.

I want to model a tank-style condensing domestic water heater.

It seems that the EnergyPlus WaterHeater:Mixed only accepts a quadratic curve, function of Part Load Ratio (PLR) only, whereas a biquadratic curve function of PLR and return water temp is warranted.

So I'd tend to go ahead and use a Boiler:HotWater and a WaterHeater:Mixed for which I'd at least put the Heater Maximum Capacity to zero to simulate a simple storage tank.

• Should I put the boiler and the tank in series on one supply branch?

• What parameters for the WaterHeater:Mixed should I use, especially Deadband temperature, control type?

• What kind of setpoint managers and availability managers and where?

Any example of a working setup would be much appreciated.

I want to model a tank-style condensing domestic water heater.

It seems that the EnergyPlus WaterHeater:Mixed only accepts a quadratic curve, function of Part Load Ratio (PLR) only, whereas a biquadratic curve function of PLR and return water temp is warranted.

So I'd tend to go ahead and use a Boiler:HotWater and a WaterHeater:Mixed for which I'd at least put the Heater Maximum Capacity to zero to simulate a simple storage tank.

• Should I put the boiler and the tank in series on one supply branch?

• What parameters for the WaterHeater:Mixed should I use, especially Deadband temperature, control type?

• What kind of setpoint managers and availability managers and where?

Any example of a working setup would be much appreciated.