Absorption refrigerating machine

Abstract

The invention provides a highly efficient and compact absorption refrigerating machine with water heated from 60 to 70 degrees Celsius as the heat source. In an absorption refrigerating machine including a regenerator G, condenser C, an absorber A, an evaporator E, an auxiliary regenerator GX and an auxiliary absorber AX, the concentrated solution from G is heated and further concentrated in GX, while the diluted solution from A is cooled in AX, the refrigerant vapor from GX is absorbed. The absorption refrigerating machine also comprises a circulating path for allowing the solution to reach the absorber in sequence from the absorberA, the auxiliary absorber AX, the regenerator G, and the auxiliary regenerator GX; and at least one of means for controlling heat transfer performance of the auxiliary regenerator GX and means for controlling heat transfer performance of the auxiliary absorber AX.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of September 25, 2003, an application number of 03823139.5 (the international application number is PCT / JP2003 / 012250), and a title of "absorption refrigerator". technical field [0002] The present invention relates to an absorption refrigerating machine, especially the cooling waste heat of the engine (the warm water of the water jacket), the cooling waste heat of the factory production process, the warm water waste heat recovered from the boiler exhaust gas and other relatively low temperature warm water, for example, the temperature is 60 An absorption chiller that uses warm water at ~70°C as a heat source. Background technique [0003] Although in real life, there are a lot of relatively low-temperature waste heat such as the cooling waste heat of the engine (warm water in the water jacket) and the cooling waste heat of the factory production process, the temperat...

AI Technical Summary

Problems solved by technology

[0019] In the solution circulation system of this cycle, the solution pump used to transfer the solution from the absorber A to the auxiliary absorber AX which has a higher pressure than the absorber, and the solution pump used to transfer the solution from the auxiliary absorber AX to the regenerator G A pump is required and, in order to transfer the entire volume from the auxiliary absorber AX to the regenerator G, a balanced control of the solution flow is necessary, which complicates the system

[0020] That is, when the amount sent from the auxiliary absorber to the regenerator is too small, the solution will remain in the auxiliary absorber, so that the amount of solution in the regenerator→auxiliary regenerator→absorber system will be reduced, and finally, the solution will be sent from the absorber to the auxiliary The solution pump of the absorber is inoperable due to cavitation caused by insufficient solution volume

On the other hand, when the amount delivered from the auxiliary absorber to the regenerator is too high, the solution pump from the auxiliary absorber to the regenerator will cause cavitation due to the insufficient amount of solution in the auxiliary absorber, thus rendering it inoperable. run

Images