Absorber for Ammonia Water Absorption Refrigerator with Enhanced Ammonia Water Falling Film Absorption Performance

Abstract

The invention provides an absorber for an ammonia water absorption refrigerating machine that improves the falling film absorption performance of ammonia water. It includes a shell, in which a plurality of falling film tubes are arranged, and the outside of the falling film tubes forms a passage for the reverse flow of the absorption liquid and the ammonia gas. A cooling water passage is formed inside the falling film tube, and the cooling water and the absorption liquid flow in reverse; multiple sets of ultrasonic atomizers are arranged at intervals along the flow direction of the absorption liquid on the outer wall of each falling film tube. The solution passing through the outer wall of the falling film tube is atomized into fine droplets and diffuses into the cavity formed by each falling film tube and the shell to absorb ammonia gas; on the outer wall of each falling film tube is set at least one set of ultrasonic vibration along the flow direction of the absorption liquid device. The invention significantly improves the absorption effect of the absorber, obtains a higher-concentration end-of-absorption solution, reduces the area of ​​the falling film tube required by the absorber, and reduces the cycle rate of the absorption refrigeration system, thereby improving the overall performance of the system.

Description

technical field [0001] The invention relates to the technical field of falling film absorbers, in particular to an absorber for ammonia water absorption refrigerators which improves the falling film absorption performance of ammonia water. Background technique [0002] In today's increasingly serious energy crisis and widespread concern for environmental pollution, ammonia absorption refrigerators have a new opportunity for development, and their application prospects are quite broad. Although the development and application of absorption chillers have achieved good economic and social benefits, their system performance needs to be improved in terms of operating energy consumption and investment costs. The absorber is a key component that affects the performance of the absorption refrigeration system. It maintains a certain evaporation pressure by continuously absorbing the low-temperature and low-pressure vapor from the evaporator, thereby ensuring the stable operation of t...

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

Images