An environmentally friendly mixed refrigerant capable of being used in a low-circuit-temperature heat pump and replacing r410a

By mixing difluoromethane, hexafluoropropylene, propane, or carbon dioxide to prepare environmentally friendly mixed refrigerants, the problem of poor environmental performance of R410A is solved, and a refrigerant replacement solution with low GWP, high safety, and excellent performance is achieved, which is suitable for refrigeration, heat pump, and low-boiling-point power cycle systems.

CN122278441APending Publication Date: 2026-06-26TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Filing Date
2026-04-02
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The existing refrigerant R410A has an excessively high GWP, making it difficult to balance environmental friendliness, flammability, and thermodynamic performance in refrigeration, heat pump, and low-boiling-point power cycle systems.

Method used

An environmentally friendly mixed refrigerant using difluoromethane (R32), hexafluoropropylene (R1216), propane (R290), or carbon dioxide (R744) as the main components is formed through physical mixing to create an alternative refrigerant with excellent environmental performance and thermodynamic properties close to or even better than R410A.

Benefits of technology

An environmentally friendly mixed refrigerant with an ODP value of zero and a GWP of less than 500 is provided. It has good environmental performance, improves system safety and energy utilization efficiency, and can directly replace R410A in refrigeration, heat pump and low boiling point power cycle systems.

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Abstract

This invention belongs to the field of refrigeration, heat pump, and low-boiling-point power cycle technology. It discloses an environmentally friendly mixed refrigerant that can be used in low-ambient-temperature heat pumps and replace R410A, comprising a first component, a second component, and a possible third component. The first component is difluoromethane (R32), the second component is hexafluoropropylene (R1216), and the possible third component is one of propane (R290) or carbon dioxide (R744). The environmentally friendly mixed refrigerant provided by this invention, when used to replace R410A, has a significantly lower global warming potential (GWP) than R410A, demonstrating a clear advantage in environmental friendliness. The thermodynamic properties of the environmentally friendly mixed refrigerant provided by this invention are comparable to or even superior to R410A, making it a complete replacement for R410A in refrigeration, heat pump, and low-boiling-point power cycle systems. Furthermore, it can be used in ultra-low temperature heat pumps, possessing broad application prospects.
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