Refrigeration – Refrigeration producer – Evaporator – e.g. – heat exchanger
Patent
1993-04-05
1993-11-30
Leung, Philip H.
Refrigeration
Refrigeration producer
Evaporator, e.g., heat exchanger
62157, 165 14, 219 1055R, 219 1055B, H05B 680, F25B 3900
Patent
active
052654443
ABSTRACT:
A microwave sourced heat exchanger in an inverted, truncated frusta-pyramidal or frusta-conical shaped configuration. A heat conductive medium is carried within microwave transparent pipes toward a microwave source having one or more magnetrons along a split path of increasing parameter. The magnetrons sequentially operate in a cyclic pattern such that the respective magnetrons do not operate when their respective operating temperatures exceed their respective maximum safe operating temperatures. The sequential use of multiple magnetrons increases the efficiency and operating life of the magnetrons. The geometrical design of the microwave heat exchanger allows the heat conductive medium anywhere in the conduit to be directly exposed to microwaves. Further, the geometry of the microwave heat exchanger induces a thermal siphon when the heat conductive medium within is exposed to a microwave source placed at the exchanger's broader base. This thermal siphon effect allows for elimination or reduction in size of a circulating motor.
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patent: 4922731 (1990-05-01), Russell et al.
patent: 4956534 (1990-09-01), Martin
Baumeister & Marks, Standard Handbook for Mechanical Engineer, Seventh Edition, 1967, McGraw-Hill, pp. 8-13 and 8-14.
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