| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an absorption type refrigeration method in which the amount of high-grade combustion energy to be used for heating is reduced and a heat source to be supplied from the outside is effectively utilized to increase efficiency of a multiple-effect absorption refrigeration system. <P>SOLUTION: In such a reverse flow-type multiple-effect absorption type refrigerator that a dilute solution in an absorber 10 is sent from a G1 regenerator 66 to a G2 regenerator 68... a Gn (n≥3) regenerator in order, an external heat source (steam or a heating medium) from a solar heat collector 74 is applied to an external heat source regenerator 72 arranged in the preceding stage of the G2 regenerator 68, namely, the external heat source is utilized as a heat source for driving the absorption type refrigerator in a cascaded manner in at least two stages. When both of the external heat source and the combustion energy for heating are applied as the heat source, the operating state of the absorption refrigerator is detected by the drain temperature of steam being a refrigerant condensed at the saturation temperature corresponding to the pressure of the Gn regenerator or the temperature of the solution at the outlet of the Gn regenerator and the number of revolution of each of solution pumps 60, 62, 64 is increased/decreased in steps according to the drain temperature or the temperature of the solution to increase/decrease the amount of the solution to be circulated. <P>COPYRIGHT: (C)2012,JPO&INPIT |
