Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Patent
1995-01-09
1997-12-02
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
392341, 392482, 165180, 137341, F24H 110, F28F 2100
Patent
active
056945159
ABSTRACT:
A storage fluid heater for heating a fluid, employs a heat storage unit, a heating element thermally coupled to the heat storage unit, and a heat recovery tube thermally coupled to the heat storage unit. The recovery tube is made from a material having a coefficient of thermal expansion so that as the average temperature of the heat storage unit near the heat recovery tube increases, the surface area of gaps between the heat recovery tube and the storage unit increases, causing the contact resistance between the heat storage unit and the heat recovery tube to increase. The temperature of the fluid flowing within the heat recovery tube is thereby limited to a predetermined maximum. A structure that relieves excess pressure when the flow of fluid through the tube is stopped has an expansion tank connected to the fluid inlet of the tube.
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Goswami D. Yogi
Hsieh Chung K.
Jotshi Chand K.
Klausner James F.
The University of Florida
Valencia Raphael
Walberg Teresa J.
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