Low-temperature refrigerator with double-absorber

Abstract

The invention discloses a low-temperature refrigerator with a double-absorber, which comprises an automatic overlaid refrigerating module and a solution circulating module. The solution circulating module adopts a double-absorber. In the invention, the low-temperature refrigerator with the double-absorber avoids irreversible loss of the refrigerating fluid in a mixing process and intensifies the absorption process of the absorber by using the characteristic of azeotropic refrigerating fluid based on the principle of automatic overlaid refrigeration so as to acquire lower refrigeration temperature and higher refrigeration efficiency, and the low-temperature refrigerator with the double-absorber can be driven by renewable heat energy, such as solar energy, terrestrial heat, industrial waste heat, afterheat and the like or low-level heat energy so as to acquire the refrigeration temperature below -60 to -70 DEG C that cannot be reached in the conventional absorbing type refrigerator, thereby greatly widening the application range of the absorbing type refrigerator in the field of cryogenic refrigeration. The low-temperature refrigerator with the double-absorber has the advantages of wide refrigeration temperature range, high efficiency, stable and reliable performance and compact structure.

Description

technical field [0001] The invention belongs to the refrigeration field, and in particular relates to a low-absorption low-temperature refrigerator. Background technique [0002] Absorption refrigeration can be powered by steam, gas, fuel oil, hot water and other forms of heat energy, especially renewable energy and low-grade heat sources such as solar energy, geothermal heat, industrial waste heat and waste heat can be used. Absorption refrigeration is a refrigeration method that has the dual advantages of energy saving and environmental protection because it generally does not use such working fluids, including CFCs or HCFCs, which have a destructive effect on the atmospheric ozone layer. [0003] Although traditional absorption refrigerators (such as lithium bromide-water, ammonia-water absorption refrigerators) have been widely used, they still have many shortcomings. For example, in lithium bromide-water absorption refrigerators, the solution is highly corrosive and ea...

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Problems solved by technology

Accordingly, the overall performance of its loop is still somewhat limited

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