Method and apparatus for converting low temperature heat into us

Details Method and apparatus for converting low temperature heat into us Method and apparatus for converting low temperature heat into us

1986-06-06

1987-10-27

Davis, Jr., Albert W.

Refrigeration

Processes

Evaporation induced by sorption

62476, 62489, F25B 1500

Patent

active

047020857

ABSTRACT:
A process and apparatus for deriving useful heat from a low temperature waste heat-carrying fluid by means of a medium which can be divided into a strong solution in vapor form and a weak solution, the medium circulating in a closed circuit. Waste heat is used to divide the medium into the two solutions at low pressure, after which the strong solution is condensed, placed at increased pressure and then evaporated by receiving additional waste heat. The weak solution is placed at increased pressure and then mixed with the evaporated strong solution at increased pressure to absorb the latter and cause it to liberate heat. The resulting mixture is used to, successively, superheat the evaporated strong solution at increased pressure, heat the weak solution at increased pressure and heat the condensed strong solution at increased pressure, after which the pressure of the mixture is reduced to provide the medium which is divided into the two solutions. Part of the condensed strong solution at increased pressure is subjected to a pressure reduction and mixed with the weak solution at reduced pressure for adjusting the concentration of the weak solution.

REFERENCES:
patent: 4364240 (1982-12-01), Schulz et al.

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