Quote:
Originally Posted by mrd
Your valves are spring-loaded, so they will stabilize, stretched a distance to match the pressure differential induced by the essentially constant loads imposed on both sides. If you could force the valves closed cyclically, to prevent pressures from stabilizing, it would pump. I'm sure it's possible to devise a passive mechanism to do this, but I'm not sure what the simplest would be.
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The pressures would stabilize, if the pressure was the same in both HXs.
But, when the sun comes out and heats up the outdoor HX,
the outdoor side pressure will build up and force hot gas indoors.
Which would equalize the pressure
for a while.
But, perhaps a pumped system would be better..
Considering what would likely happen on a cold night..
