Double-effect adsorption refrigeration device

Abstract

The present invention relates to an adsorption chiller using double-effect cycle utilizing middle driving heat source of 100-150 degree centigrade. The cycle consists of two cycles such as high temperature cycle (HTC) and low temperature cycle (LTC). Zeolite-water system and silica gel-water system are used as adsorbent-adsorbate pairs of HTC and LTC respectively. Waste heat of zeolite generated at during adsorption period of the zeolite is re-used for pre-heating and desorbing the silica gel.

1 . A double effect adsorption refrigeration device comprising a first and a second bed provided for alternatively adsorbing and desorbing a refrigerant liquid in a predetermined one cycle time, in which the first bed comprises a first adsorbent material and the second bed comprises a second adsorbent material which is different from the first adsorbent material, said device further comprising a liquid circulation device provided between the first and second beds so that a heat generated by the first bed is transferred to the second bed for heating the same. 
   
   
       2 . A double effect adsorption refrigeration device according to  claim 1 , in which said first adsorbent material is zeolite and said second adsorbent material is silica gel. 
   
   
       3 . A double effect adsorption refrigeration device according to  claim 2 , further comprising an external heat source for heating the zeolite, a temperature of the external heat is 100 to 150 degree centigrade. 
   
   
       4 . A double effect adsorption refrigeration device according to  claim 3 , in which said predetermined one cycle time is around 1200 seconds. 
   
   
       5 . A double effect adsorption refrigeration device according to  claim 4 , in which an amount ratio of the zeolite and the silica gel (silica gel/zeolite) is from 0.8 to 1.0. 
   
   
       6 . A double effect adsorption refrigeration device according to  claim 5 , in which an time ratio of a time of desorption time and adsorption time of the zeolite, or adsorption time and desorption time of the silica gel is 0.6 to 0.8.