Energy-storage geothermal heating system for absorbing intermittent energy

Abstract

The invention discloses an energy-storage geothermal heating system for absorbing intermittent energy. The system includes a heat storage device, a peak-shaving plate type heat exchanger, a heating plate type heat exchanger, a heat release plate type heat exchanger, a geothermal water circulating pump, a heat supply hot water circulating pump and a heat release circulating pump. The heat storage device converts the intermittent energy into heat energy and stores the heat energy in a heat storage material. In a heating season, the heat energy in the heat storage material is released in a heat supply hot water pipe network through the heat release circulating pump and the peak-shaving plate type heat exchanger to provide peak-shaving heat energy for a building. In a non-heating season, the heat energy in the heat storage material is released in geothermal water through the heat release circulating pump and the heat release plate type heat exchanger and stored in a geothermal reservoir. The system solves the 'source-load' coupling problems between the intermittent energy and a building heating system, such as cross season storage of unstable intermittent energy, matching with the demand of a stable heat source for building heat supply, gradient utilization of heat, and peak shaving of a heat supply network, and is suitable for all kinds of building heating systems with certain geothermal water resources.

Description

technical field [0001] The invention relates to heating technology, in particular to an energy storage type geothermal heating system for absorbing intermittent energy. Background technique [0002] In recent years, in northern China, especially the Beijing-Tianjin-Hebei region, the coal-based energy structure and the environmental pollution caused by industrial transfer have caused frequent smog in this area, which has aroused strong concern from the whole society. The large-scale development and utilization of geothermal energy has played an important role in clean heating in winter and alleviating smog in northern regions. Geothermal heating technology has become mature. Up to 4.5 million m 2 , basically solved the winter heating needs of local residents, making the entire county a "smoke-free city". [0003] Geothermal storage is a huge natural energy storage. It is most suitable for the multi-energy complementary heating system to undertake the function of energy stor...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an energy storage geothermal heating system for intermittent energy consumption, which solves the problem of inter-seasonal storage of unstable intermittent energy, matching with building heating stable heat source demand, heating cascade utilization, heating network peak regulation, etc. The "source-load" coupling problem between intermittent energy sources and building heating systems is applicable to various building heating systems with certain geothermal water resources

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