An air-thermal energy coupling temperature regulating system for underground cavern group of pumped storage power station

By combining air-source heat pump units and heat storage in the underground chamber complex of the pumped storage power station, the efficient recovery and utilization of heat energy in the chambers has been achieved, solving the problems of high energy consumption and heat waste in traditional ventilation systems, and improving the stability and energy utilization efficiency of the system.

CN122407264APending Publication Date: 2026-07-17ZHEJIANG HUADONG CONSTR ENG +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG HUADONG CONSTR ENG
Filing Date
2026-04-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the cooling of underground chambers in pumped storage power stations mainly relies on forced mechanical ventilation systems, which suffer from high energy consumption, serious heat waste, limited cooling effect and high operating costs. Furthermore, existing air source heat pump technology is not adapted to the special scenario of underground chambers.

Method used

An air-source heat pump unit is combined with an underground chamber heat storage facility. Through a heat exchange pipeline network consisting of intake and return pipes, the heat energy inside the chamber is recovered and utilized. Combined with a control system, temperature is regulated to reduce energy consumption and improve system stability.

Benefits of technology

It achieves efficient recovery of low-grade waste heat in the tunnel, reduces the overall energy consumption of the system, improves energy utilization efficiency, and replaces purchased energy through waste heat heating and auxiliary power generation, ensuring stable equipment operation and improved working environment for personnel.

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Abstract

The application provides a pumped storage power station underground chamber group air heat energy coupling temperature regulating system, which comprises an underground chamber group heat reservoir, an air source heat pump unit, a heat exchange pipeline network, a heat energy conveying system and a control system; the underground chamber group heat reservoir is formed by a main plant, a main transformer tunnel and a tailgate chamber of the pumped storage power station being connected to form a closed space cluster; the air source heat pump unit comprises a compressor, a condenser and an evaporator, and the evaporator, the compressor and the condenser are sequentially connected; the heat exchange pipeline network comprises a suction pipeline, a heat release pipeline and a return pipeline, the air inlet end of the suction pipeline is connected with the underground chamber group heat reservoir, the air outlet end of the suction pipeline is connected with the evaporator, the air inlet end of the return pipeline is connected with the condenser, the air outlet end of the return pipeline is connected with the underground chamber group heat reservoir, and the two ends of the heat release pipeline are respectively connected with the condenser and the heat energy conveying system. The underground chamber group heat reservoir is used as a heat pump stable heat reservoir, so that the temperature is reduced, waste heat is recycled and heat energy is reused.
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