Refrigeration – Atmosphere and sorbent contacting type
Patent
1984-04-19
1985-05-28
Bennett, Henry
Refrigeration
Atmosphere and sorbent contacting type
237 1R, 165 62, 62 94, F25D 2300
Patent
active
045192189
ABSTRACT:
A multi-stage heating system comprising two or more heating stage units. Each unit holds a saturated solution of a hygroscopic solute in contact with solid solute and the units are connected in series in such a way that solution from one unit is fed into an evaporator in the next following unit. In each unit, vapour is brought in contact with the saturated solution to be absorbed by the latter, whereby the solution heats up and the so-heated solution is fed to the evaporator of the next following heating stage. The last heating stage unit is designed for the withdrawal of heat for consumption. If desired, the last unit may also be adapted for cooling. To this end this unit is associated with an external water evaporator which by heat exchange cools the solution inside the last heating stage unit to ambient or slightly above ambient temperature. In this way, intensive evaporation takes place in the evaporator inside the last heating stage unit with the result that the water remaining in the evaporator cools down substantially, e.g. to about 8.degree.-10.degree. C. and can serve for cooling.
Provisions are also made for the regeneration of the saturated solution in each heating stage unit.
REFERENCES:
patent: 4138850 (1979-02-01), Tchernev
Harel Zahal
Melamed Avraham
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