Solar Loop Pressurization

Siegenthaler, John
February 2009
PM Engineer;Feb2009, Vol. 15 Issue 2, p13
The article discusses the physics behind measuring the correct pressure for the solar collector circuit. It states that the collector subsystems forms a closed, fluid-filled loop filled with an antifreeze solution. The relationship between absolute pressure and boiling point for this fluid is presented. Procedure for selecting a pressure relief valve pressure is presented.


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