Multi-energy coupling cooling and heating system for building in long-term cooling region, and operation method

Through multi-energy coupled cooling and heating systems, combined with heat source grading management and waste heat recovery technology, the problem of low cooling and heating efficiency in the southern region has been solved, and efficient, stable and comfortable cooling and heating supply and annual domestic hot water supply have been achieved. , adapt to extreme climate change.

WO2025001872A1PCT designated stage expired Publication Date: 2025-01-02NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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Patent Information

Application Number
PCT/CN2024/099168
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-06-29
Filing Date
2024-06-14
Publication Date
2025-01-02

AI Technical Summary

Technical Problem

The existing technology is difficult to effectively meet the long-term cooling and heating demand of cold-supply buildings in the southern region, especially during the cooling season, the system efficiency is low, the energy consumption is high, the scope of application is limited, and the single energy coupling is difficult to cope with extreme climate change.

Method used

Multi-energy coupled cooling and heating system is adopted, including heat source grading management unit, solar heat collecting unit, lithium bromide absorption refrigeration unit, gas heating unit, soil source heat pump cooling and heating unit and indirect evaporative cooling waste heat recovery unit, through valves and The control of the water pump realizes the coordinated work of soil source heat pump, lithium bromide absorption refrigeration unit and gas heat replenishment, and uses heat source grading management and waste heat recovery to improve system efficiency.

Benefits of technology

It has achieved efficient, stable and comfortable cooling and heating supply in southern areas, reduced energy consumption, adapted to extreme climate change, met the needs of domestic hot water throughout the year, and improved the stability of the system and user comfort.

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Abstract

Disclosed in the present invention are a multi-energy coupling cooling and heating system for a building in a long-term cooling region, and an operation method. The system comprises a heat source grading management unit, a solar heat collection unit, a lithium bromide absorption refrigeration unit, a gas supplementary heating unit, a soil source heat pump cooling and heating unit, and an indirect evaporative cooling waste heat recovery unit; the heat source grading management unit is connected to the solar heat collection unit, the lithium bromide absorption refrigeration unit, the gas supplementary heating unit, and the soil source heat pump cooling and heating unit; and the indirect evaporative cooling waste heat recovery unit is connected to the soil source heat pump cooling and heating unit. A heat storage device of the present invention uses a double-water-tank mode, and is designed on the basis of the layering principle, graded heat management of different grades of energy sources is achieved, solar energy, geothermal energy, gas, waste heat, and evaporation cold energy of water are fully utilized, and the system exergy loss is reduced and the energy utilization efficiency is improved while annual cooling, heating and domestic hot water requirements of buildings are met.
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Citation Information

Patent Citations

  • Solar ground source heat pump system for classified utilization of heat energy

    CN107328003A

  • Multi-energy coupling cooling and heating system for building in long-term cooling area and operation method of multi-energy coupling cooling and heating system

    CN116642229A

  • Combined solar cooling and heating dual-supply system

    CN211011985U

  • Heating, refrigerating and hot water supply device integrating solar energy, air source heat pump and gas heating water heater

    CN215863654U

  • Apparatus for hybrid heating and cooling using solar energy

    KR1020180109110A

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    CN121297084A