A plate-fin type flat heat pipe absorber

Abstract

The invention relates to a plate-fin-type heat pipe absorber. The plate-fin-type heat pipe absorber consists of an absorption section and a cooling section, and mainly comprises the absorption section, a heat dissipation section, a concentrated solution inlet, a concentrated solution passage, a metal end enclosure, absorption section fins, steam inlets, flat heat pipes, cooling section fins, a cooling fluid inlet, a cooling fluid outlet and other components. The plate-fin-type heat pipe absorber is characterized in that the flat heat pipes are employed, and an absorption process and a cooling process which are performed at the same time in the absorber are separated. Multiple falling film small passages are formed in the absorption section passage by an absorber concentrated solution through a liquid distribution device, and countercurrent absorption is formed with steam; and heat generated during the absorption process is guided out of the absorption section through the flat heat pipes, and is carried away by cooling fluid at the cooling section. According to the absorber disclosed by the invention, the inform-temperature features of the flat heat pipes are utilized, so that the heat and mass transfer capacity during the absorption process is obviously improved; the structure is compact; the size is reduced; meanwhile, the complexity degree of cooling pipeline arrangement is reduced, and the cooling effect is enhanced; and therefore, the defect that the size of the absorber is overlarge can be overcome, and the application range of an absorption-type heat pump is widened.

Description

technical field [0001] The invention relates to a compact absorber which can be applied to an absorption heat pump, in particular to a plate-fin type flat heat pipe absorber which can use water or air as a medium for cooling and heat dissipation. Background technique [0002] With the development of air-conditioning and refrigeration technology, as well as the improvement of energy saving and environmental protection requirements, absorption heat pumps have been used more and more. For example, traditional lithium bromide absorption refrigerators usually use shell-and-tube absorbers, which are large in size and consume a lot of metal. They are usually water-cooled and require a cooling water tower, which is too complicated for small refrigeration systems. Therefore, the traditional absorber has the disadvantages of large volume, poor heat exchange effect, and complicated pipeline arrangement. [0003] Unlike the shell-and-tube absorber, the plate-fin absorber is a newer typ...

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Problems solved by technology

[0005] As mentioned above, in order to solve the shortcomings of the traditional shell-and-tube absorber, such as large volume, high metal consumption, and complicated water-cooling tube layout, as well as the problems of the traditional plate absorber, such as horizontal heat dissipation, difficult flat design, and limited mass transfer area per unit volume, etc. , the present invention cleverly combines the compact characteristics of the "plate-fin" heat exchanger with the characteristics of high heat transfer and temperature uniformity of the flat heat pipe, and proposes a new type of true "plate-fin" flat heat pipe absorber

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