EcoRenovator - View Single Post - Another DIY HP Waterheater (pics and info)

RB855 · 12-29-13, 12:06 AM

*Saved post*

I forgot to mention, the goal of this unit is to store heated water in a un-powered electric 50gal waterheater. I may leave the elements in, and use a outdoor ambient thermostat to transfer from HP to Elect in <1.0 COP operating temperatures.
Also to note: Switching to r-134a on a r-410a compressor proved fairly significant capacity loss from the compressor. I can only assume the 410CP uses a smaller displacement pump than a 134CP, likely due to the very different pressure and mass flow rates of the 2 working gases. There is probably a slight performance hit as the motor is slightly over-sized now, but that also offers a bit extra overhead to work with.

12-29-13, 12:06 AM	#2
RB855 Helper EcoRenovator Join Date: Jul 2012 Location: Jacksonville, fl Posts: 48 Thanks: 3 Thanked 14 Times in 10 Posts	Saved post I forgot to mention, the goal of this unit is to store heated water in a un-powered electric 50gal waterheater. I may leave the elements in, and use a outdoor ambient thermostat to transfer from HP to Elect in <1.0 COP operating temperatures. Also to note: Switching to r-134a on a r-410a compressor proved fairly significant capacity loss from the compressor. I can only assume the 410CP uses a smaller displacement pump than a 134CP, likely due to the very different pressure and mass flow rates of the 2 working gases. There is probably a slight performance hit as the motor is slightly over-sized now, but that also offers a bit extra overhead to work with. Last edited by RB855; 12-29-13 at 01:56 PM..