Hi everyone, I need to model in Design Builder an A2A heat pump with direct expansion and A2W coupled to a radiant floor. I think that I have to model them separately, but I've had difficulty implementing direct expansion on the airside. Someone can help me?
I haven't come across an A2W heat pump before. I had to go to the help files.
https://designbuilder.co.uk/helpv6.0/...
This describes the process of A2W, though I couldn't create it manually, I had to use the HVAC template "ASHP Air-to-water Heat Pump, Water Convector". Delete the water convector and replace it with the infloor radiant system.
The A2A system should be straight forward from the Unitary Air-to-Air Heat Pump Loop from Add Loop. DX is listed as an the only option in the cooling coil and first heating coil.
I had to do it as two systems.
Did you need them to be integrated?
I don't need it integrated, but in the ASHP template I've got a problem: I want to change the water tank present in the template with a simple heat exchanger refrigerant/water, because in the real system I don't have a tank, but only an HX. The software does not allow me to replace it, do you have any advice on how to do it?
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