Carbon dioxide-based combined cooling, heating and power device system and method

CN122359953APending Publication Date: 2026-07-10NANJING SHENGNUO HEAT PIPE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING SHENGNUO HEAT PIPE
Filing Date
2026-05-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing compression-type carbon dioxide heat pump technology has a high compression ratio and low energy efficiency when operating in heating or cooling conditions. It cannot simultaneously provide heating, cooling and power generation, and the system energy efficiency ratio is significantly lower than that of traditional refrigerant heat pumps.

Method used

An absorption heat pump system based on carbon dioxide and alkanolamine absorbents is adopted, combined with a two-stage turbine and a heat pipe heat exchanger, to achieve combined cooling, heating and power. The turbine generates electricity and the alkanolamine absorbent is used to reduce energy consumption, while the liquid phase content is controlled to regulate the cooling and electrical load.

Benefits of technology

This technology enables a single carbon dioxide heat pump to simultaneously provide heating, cooling, and power generation, reducing system energy consumption, increasing operational efficiency, and extending the payback period.

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Abstract

The application belongs to the technical field of heat pumps and relates to a cold, heat and electricity combined supply device system and method based on carbon dioxide, which comprises a generator, the generator is provided with a mixed liquid inlet of carbon dioxide and alcohol amine absorbent, a carbon dioxide outlet and a regenerated alcohol amine solution outlet; the carbon dioxide outlet is sequentially connected with a condenser, a turbine device, an evaporator and an absorber through pipelines, the regenerated alcohol amine solution outlet is connected with the absorber, and the mixed liquid of carbon dioxide and alcohol amine absorbent discharged from the absorber is circulated back to the generator. The alcohol amine absorbent and the carbon dioxide working medium pair are introduced to form an absorption heat pump system, the system energy consumption can be greatly reduced, the single carbon dioxide heat pump can realize the functions of heating, refrigeration and power generation, and the operation income is high.
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