Tandem double-absorber low-temperature refrigerator

Abstract

The invention discloses a tandem double-absorber low-temperature refrigerator. The refrigerator comprises an auto-cascade cooling module and a solution circulating module. Based on an auto-cascade cooling principle, in the tandem double-absorber low-temperature refrigerator, thin solution from a generator absorbs a refrigerant from an evaporator firstly and the tandem double-absorber low-temperature refrigerator makes full use of the absorbing capacity of the thin solution and reduces the evaporation pressure, so compared with the traditional auto-cascade absorption refrigerator, the tandem double-absorber low-temperature refrigerator has more excellent performance factors and the lowest refrigerating temperature. The tandem double-absorber low-temperature refrigerator can be driven by reproducible energy, such as solar energy, ground heat, industrial waste heat, industrial afterheat and the like, and low-grade heat energy, obtains the refrigerating temperature below -60 to -70 DEG C which the traditional absorption refrigerator cannot reach, greatly expands the application range of the absorption type refrigerator in the deep refrigeration field and has wide application prospect in the field needing deep refrigeration and having a large amount of industrial waste heat and afterheat.

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] The self-cascading absorption refrigeration device combines the theory of the self-cascading refrigeration cycle and the theory of the absorption refrigeration cycle. It is powered by steam, gas, fuel oil, hot water and other forms of heat energy. It consumes less mechanical work and can obtain traditional absorption. The lower cooling temperature that cannot be achieved by conventional refrigerators. This technology has important guiding significance for the application of absorption refrigeration cycle driven by heat energy in the field of deep freezing. It has broad application prospects in chemical, biological, food processing, pharmaceutical and other fields that require deep freezing and have a large amount of industrial waste heat and waste heat. [0003] The Chinese patent No. ZL02110940.0...

AI Technical Summary

Problems solved by technology

In this way, because the efficiency of the ejector is relatively low, the driving energy used by the ejector comes from the dilute solution at the end of the generation, the energy density of the driving fluid is low, and the ejection ratio of the ejector is very low, so it can be ejected by the ejector The amount of refrigerant is also less

Limited effect of pressurization to enhance the absorption process and to achieve low refrigeration temperatures

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