SPLIT EXPANSION HEAT PUMP CYCLE

MX434567BActive Publication Date: 2026-05-19ECHOGEN POWER SYST (DELAWARE) INC

Patent Information

Authority / Receiving Office: MX · MX
Patent Type: Patents
Current Assignee / Owner: ECHOGEN POWER SYST (DELAWARE) INC
Filing Date: 2022-11-04
Publication Date: 2026-05-19

AI Technical Summary

Technical Problem

Conventional heat pump cycles experience performance limitations due to the pinching phenomenon in heat exchangers, where the working fluid and heat transfer medium's heat capacity curves do not match, leading to restricted heat transfer and reduced efficiency.

Method used

Implementing a split expansion heat pump cycle that separates high-temperature heat exchange into two stages and employs split expansion of the working fluid, with portions expanding after partial cooling in different stages, optimizing the flow split to align the working fluid's temperature curve with the heat transfer medium's heat capacity curve.

Benefits of technology

Improves the coefficient of performance (COP) of the heat pump by nearly 10% through enhanced heat transfer and efficient utilization of working fluid expansion, addressing the pinching issue and optimizing thermodynamic performance.

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Abstract

The description provides a heat pump cycle that allows for an improved matching of the T(Q) slopes of the heat pump cycle; more particularly, the high-temperature heat exchange is separated into two stages; furthermore, a portion of the working fluid that was cooled in the first stage is further cooled by expansion before being mixed with a hot working fluid for the inlet to the recovery heat exchanger.

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