The Homemade Heat Pump Manifesto

[Ko_deZ]

Originally Posted by launboy

"I think series would be better if I did this..." I wrote that wrong, I was thinking parallel would actually be better, but maybe I'm wrong. What do you all think, and what's the reasoning behind it?

You are quite right. Parallel is better. The reason is simply that you avoid having possibly a full HX freeze up. The first one will always be colder than the second one. This is the same problem as having multiple drill holes and putting them in series. Without proper control, the first well will freeze up and loose virtually all it's usefulness in heat transfer, leaving the fewer wells to get heat from, and accelerating the freeze up speed. With all in parallel you will have full effect of all wells until they all freeze up at the same time.

-Ko_deZ-