A low-temperature heat source-based combined cooling and power system and method

By observing and dynamically adjusting the thermal response of the working fluid solution inside the generator in real time, the problem of coordinating the cooling capacity and power generation in the vehicle combined cooling and power system was solved, improving energy utilization efficiency and reducing carbon emissions, and achieving efficient waste heat recovery and carbon utilization.

CN122408293APending Publication Date: 2026-07-17HAIGRE (BEIJING) THERMAL ENERGY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HAIGRE (BEIJING) THERMAL ENERGY TECHNOLOGY CO LTD
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing vehicle combined cooling and power technologies neglect the thermal response sensitivity of the working fluid solution inside the absorption refrigeration cycle generator. This results in the inability to accurately coordinate the overall optimal balance between cooling capacity and power generation under transient conditions, affecting the efficient and stable operation of the system.

Method used

By observing the thermal response sensitivity of the working fluid solution inside the generator in real time, the target solution temperature and temperature change rate are dynamically solved, and the split ratio is adaptively adjusted to achieve precise coordinated control of cooling capacity and power generation.

Benefits of technology

It has improved the overall energy utilization efficiency of waste heat recovery, reduced fossil fuel consumption and carbon dioxide emissions, and promoted the application of carbon utilization and carbon dioxide capture, utilization and storage technologies.

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Abstract

The present application relates to the technical field of vehicle waste heat utilization and energy saving and carbon reduction, and discloses a cold and heat and power combined system and method based on a low-temperature heat source. The system comprises: a flow dividing valve for extracting high-temperature coolant from the upstream of a vehicle heat dissipation water tank; an absorption refrigeration cycle driven by the high-temperature coolant and outputting cold energy; a thermoelectric power generation unit for generating electric energy by using the temperature difference between the coolant at the outlet of a generator and an external low-temperature heat source; a solution heat state observation module for determining the solution temperature change rate based on the solution temperature inside the generator to represent the heat response sensitivity; a target state determination module for determining the target solution temperature and the target solution temperature change rate that make the refrigeration capacity and the power generation power optimal in combination; and a heat state regulation module for determining the flow dividing ratio value adjustment amount based on the difference between the actual temperature change rate and the target temperature change rate, driving the solution heat state to approach the target, and realizing the comprehensive optimal regulation and control of the cold and power combined system.
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