Heat engines and heat pumps

Details Heat engines and heat pumps Heat engines and heat pumps

1976-03-24

1978-03-21

Wayner, William E.

Refrigeration

Refrigeration producer

62114, F25B 2300

Patent

active

040795969

ABSTRACT:
The present invention introduces a heat engine, or a heat pump, in which the working medium used is subjected alternatively to solidification and melting operations. A working medium so used is referred to as an S/L type working medium. In a new heat engine, an S/L type working medium is subjected to cyclic operations, each cycle comprises of a high temperature melting step conducted under a first pressure, and a low temperature solidification step conducted under a second pressure. In a new heat pump, each cycle comprises of a high temperature solidification step conducted under a first pressure and a low temperature melting step conducted under a second pressure. When a non-aqueous medium is used, the first pressure and the second pressure are a relatively high pressure and a relatively low pressure, respectively. When an aqueous medium is used the two pressures are a relatively low pressure and a relatively high pressure, respectively. It is noted that the operation of a heat pump is the reverse operation of a heat engine.

REFERENCES:
engineering Thermodynamics, Stoever, p. 177, 1951, John Wiley & Sons, Inc.

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