Adsorption refrigeration system

Refrigeration – Processes – Evaporation induced by sorption

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62476, 62480, F25B 1700

Patent

active

048813761

ABSTRACT:
An adsorption refrigeration system comprising adsorption columns housing a solid adsorbent and heat transfer tubes and sealed with a refrigerant, an evaporator, a condenser, and pipe lines connecting them together so that the refrigerant may be circulated, the pipe lines being equipped with valves, preferably, butterfly valves, capable of opening or closing by means of internal pressure difference between the evaporator side and condenser side and driving force of eccentric valve shafts. The system is operated by alternatively changing over adsorption and desorption stages between the one adsorption column(s) and the other column(s) so that both columns may be at mutually reverse stages; shortly before change-over, transferring whole amount of heat remained in the one column(s) immediately before shifting from desorption to adsorption stage to the other column(s) immediately before shifting from adsorption to desorption stage where the preheat the adsorbent and then reversing the stages. The evaporator preferably comprises heat transfer tubes for passage of a heating medium on a utilization side arranged in multi-stage, evaporating plates holding the refrigerant liquid in which each stage of the tubes are partly immersed, and overflow members for adjusting the liquid level, whereby evaporating ebullition occurs briskly.

REFERENCES:
patent: 4228845 (1980-10-01), Cowling
patent: 4610148 (1986-09-01), Shelton
patent: 4637218 (1987-01-01), Tchernev
patent: 4754805 (1988-07-01), Rothmeyer
patent: 4765395 (1988-08-01), Paeye et al.

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