Solar-geo-radiant

Rich L.

I have geo water to water in my house now and have been seriously considering adding solar to the equation.

Here's how I envision doing it: 5 ton water to water heat pump with 50 gallon buffer tank (existing). Add a storage tank with 2 heat exchanger coils internal to it, such as the Superstor Solar.

http://www.htproducts.com/literature/lp-196.pdf

One coil tied to the buffer tank as an injection loop. Add heat as needed (W1) when solar tank is warm enough, to meet ODR buffer tank settings. Have a summer shut down means (WWSD) to keep from adding hot water to the buffer in cooling mode. Have manual isolation valves to "lock out" heat in the summer.

If buffer tank is satisfied and heat is still coming from solar, dump in preheat DHW tank (geo desuperheater hooked up to it now) by way of the second tank loop heat exchanger.

The solar itself would be hooked up to the Superstor Solar tank with a glycol solution.

Controls should be interesting!

What am I missing> Please pick it apart! it's much easier to change while still on paper than after the project's under way.

Thanks for the help, Rich L.