Protection system for a solar water heating system

  • US 20060107944A1
  • Filed: 09/20/2005
  • Published: 05/25/2006
  • Est. Priority Date: 04/11/2003
  • Status: Active Grant
First Claim
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1. A solar water heating system including:

  • a water tank to hold water to be heated, a heat transfer fluid circuit including an heat exchanger associated with said water tank to heat water therein, a solar collection means in communication with said heat exchanger, an inlet connection to carry heat transfer fluid from said solar collection means to said heat exchanger where said water will be heated; and

    an outlet connection to carry heat transfer fluid from said heat exchanger to said solar collection means where said heat transfer fluid will be heated, said heat transfer fluid circuit including a reversibly evaporable heat transfer fluid which will absorb heat from said solar collection means and which will transfer said heat to said water in said water tank by means of said heat exchanger; and

    a liquid diversion path including a receptacle arranged to receive liquid phase HTF from the heat transfer fluid circuit when heat transfer fluid in the solar panel vaporizes;

    whereby when a portion of heat transfer fluid changes to a gaseous state in said solar collection means, heat transfer fluid in a liquid state will be forced out of said solar collection means under pressure into said diversion path.

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