F - Mech Eng,Light,Heat,Weapons – 24 – J
Patent
F - Mech Eng,Light,Heat,Weapons
24
J
23/277, 126/11.2
F24J 1/02 (1980.01)
Patent
CA 1168421
ABSTRACT A method and apparatus are disclosed for storing thermal energy. A hydroxide of calcium, magnesium or barium is converted in a first container to the oxide and steam by being exposed to solar radiation. The steam is passed to a holding container and condensed. In another container capable of communicating with said first container is disposed a solution of an alkali metal hydroxide. When the solar radiation discontinues this latter container is connected to said first container and, at the temperatures obtaining, the vapour pressure above the alkali metal hydroxide is sufficient to cause water vapour to flow into the first container and reconvert the alkaline earth metal oxide to hydroxide, at the same time concentrating the alkali metal hydroxide solution. When solar radiation recommences the process is repeated eventually affording very concentrated or practically anhydrous sodium hydroxide. When heat is required in colder weather the water in the holding container is contacted with the concentrated alkali metal hydroxide resulting in an exothermic reaction which can be heat exchanged in conjunction with a water filled central heating system.
371398
Fetherstonhaugh & Co.
Gath Nicolas
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