Intermittent type silica gel adsorption refrigerator

Claim 1

AN ADSORPTION TYPE REFRIGERATION SYSTEM ADAPTED FOR OPERATING IN A ZERO GRAVITY ENVIRONMENT, SAID SYSTEM COMPRISING: FIRST AND SECOND ADSORBER-GENERATOR VESSELS EACH CONTAINING A REFRIGERANT-ADSORBING SUBSTANCE AND ADAPTED TO BE EXPOSED TO SOLAR RADIATION, ONE OF SAID VESSELS CONTAINING REFRIGERANT WHICH HAS BEEN ADSORBED BY THE REFRIGERANT-ADSORBING SUBSTANCE, SAID REFRIGERANTCONTAINING VESSEL BEING EXPOSED TO SOLAR RADIATION AND THE OTHER OF SAID VESSELS BEING SHIELDED FROM SOLAR RADIATION; A CONDENSER HAVING AN INLET FOR RECEIVING REFRIGERANT FLUID AND AN OUTLET FOR DISCHARGE OF SAID FLUID; AN EVAPORATOR CONNECTED IN FLUID COMMUNICATION WITH THE OUTLET OF SAID CONDENSER AND ADAPTED TO EVAPORATE REFRIGERANT FLUID INTRODUCED THEREIN TO THEREBY PRODUCE REFRIGERATION BY EXTRACTING HEAT FROM ITS ENVIRONMENT, SAID EVAPORATOR HAVING AN OUTLET FOR THE DISCHARGE OF REFRIGERANT FLUID;