A combined refrigeration air conditioning unit coupling compression water cooling and low temperature lithium bromide

By using a composite refrigeration and air conditioning unit that couples compression water cooling with low-temperature lithium bromide, the condensation heat is recovered to drive the lithium bromide refrigeration module and a cascade cooling strategy is adopted. This solves the energy waste problem of compression air conditioning and the operational limitations of lithium bromide refrigeration, achieving a highly efficient and stable cooling effect.

CN122359952APending Publication Date: 2026-07-10ZHONGKE HENGXIN TECHNOLOGY DEVELOPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGKE HENGXIN TECHNOLOGY DEVELOPMENT CO LTD
Filing Date
2026-04-29
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing compressor air conditioners directly discharge condensation heat, resulting in energy waste and high power consumption, while absorption lithium bromide refrigeration relies on external heat sources, limiting its operating scenarios and lacking deep coupling solutions to improve energy efficiency.

Method used

Design a composite refrigeration air conditioning unit that couples compression water cooling with low-temperature lithium bromide. The condensation heat of the compression refrigeration module is recovered through the circulating water pipeline to drive the lithium bromide refrigeration module. A stepped cooling strategy is adopted to increase the refrigeration temperature difference by using two-stage cooling of the refrigerant medium.

Benefits of technology

It achieves effective recovery and utilization of condensation heat, reduces operating power consumption, improves refrigeration efficiency, adapts to a wider range of ambient temperatures, and reduces compressor failure rate and operating costs.

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Abstract

This invention discloses a composite refrigeration and air conditioning unit coupling compression water cooling and low-temperature lithium bromide, including a compression refrigeration module, a lithium bromide refrigeration module, a circulating water pipeline, and a refrigerant connection pipeline. The compression refrigeration module has a condenser I and an evaporator I; the lithium bromide refrigeration module has a generator and an evaporator II. The circulating water pipeline passes through the condenser I and the generator. The condenser I heats the water in the circulating water pipeline to form hot water, which then enters the generator and heats the dilute lithium bromide solution inside. The refrigerant connection pipeline passes through the evaporator II and the evaporator I. The evaporator II performs a first-stage cooling of the refrigerant, and the evaporator I performs a second-stage cooling of the refrigerant. This unit can effectively recover the condensation heat generated by the compression refrigeration module and convert it into effective energy, avoiding waste caused by direct discharge. It has a cascade cooling function for the refrigerant, reducing the operating load of the compression module and improving the unit's operational stability.
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