Ammonia water absorption refrigerator absorber for improving ammonia water falling film type absorption performance

Abstract

The invention provides an ammonia water absorption refrigerator absorber for improving ammonia water falling film type absorption performance. The ammonia water absorption refrigerator absorber comprises a shell, a plurality of falling film tubes are arranged in the shell, a passages where absorption liquid and ammonia gas reverse flow are formed outside the falling film tubes, cooling water passages are formed inside the falling film tubes, and cooling water and absorption liquid flow reversely; a plurality of groups of ultrasonic atomizers are arranged on the outer wall of each falling filmtube at intervals along the flowing direction of the absorption liquid, and the ultrasonic atomizers generate high-frequency oscillation to atomize a solution flowing through the outer walls of the falling film tubes into fine liquid drops and diffuse the fine liquid drops into a cavity formed by each falling film tube and the shell to absorb ammonia gas; and at least one group of ultrasonic oscillators are arranged on the outer wall of each falling film tube in the absorption liquid flowing direction. The absorption effect of the absorber is remarkably improved, an absorption solution with higher concentration is obtained, the area of the falling film tubes needed by the absorber is reduced, the circulation ratio of an absorption refrigeration system is reduced, and therefore the overallperformance of the system is improved.

Description

Technical field [0001] The present invention relates to the technical field of falling film absorber, and more particularly to an absorber absorber absorption refrigerator for lifting ammonia aqueous membrane absorbing properties. Background technique [0002] Today, the energy crisis is increasingly, and the environmental pollution is widespread, the ammonia water absorbent refrigerator has a new opportunity, and its application prospects are quite broad. Although the development and application of the absorbent refrigeration machine has achieved good economic and social benefits, its system performance needs to improve from the operational energy consumption and investment cost. The absorber is a key component affecting the performance of the absorbent refrigeration system, which maintains a certain evaporation pressure by continuous absorption of low temperature low pressure vapor from the evaporator, thereby ensuring stable operation of the absorbent refrigeration system. In ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an absorber for ammonia water absorption refrigerators that improves the absorption performance of ammonia water falling film type, and uses ultrasonic vibration and atomization to enhance the mass transfer effect, expand the mass transfer area, and better solve the problem of absorption in traditional falling film absorbers. There is a large difference between the concentration of the solution at the outlet of the absorber and the concentration of the corresponding saturated solution at the temperature and pressure of the absorber, so that the ammonia absorption capacity is improved, thereby improving the overall performance of the ammonia water absorption refrigeration or heat pump system

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