Quote:
Originally Posted by tantal
You can use antifreeze fluid to prevent it from freezing.
Or an open tank system for water. It drains water in the tank when temperatures in the solar cell are below zero c.
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My original plan was for a drain back system. I already had a below grade insulated tank. My concern is making a panel that can take the high heat. In theory, a cheaper lower temp panel can be made and kept cool with water pumping. But what happens the day the pump dies? Does the cheaper plastic tubing in the panel also die from over heating?