Central heating system based on distributed heating and heat storage technology

Abstract

The invention relates to a central heating system based on the distributed heating and heat storage technology. The central heating system comprises a solar energy middle-high temperature heat collecting system, a heat storage device, a heat exchanger, a control system and the like. A central heating pipe network comprises a solar energy heat collecting system and a phase change heat storage system; the solar energy heat collecting system absorbs steam in a solar energy heating pipe network to meet the requirements of users; and the phase change heat storage system has two operating modes of high-temperature heat-conducting oil heat storage and electric-heating heat storage. When the solar energy heat collecting system is sufficient in heat, a valve is adjusted to enable heat-conducting oil to flow through the a phase change heat storage device, a heat storage material is heated to realize the heat-charging process; or off-peak electricity is utilized to drive an resistance wire to emit heat, the heat storage material stores the part of heat to achieve the heat-charging process. When the solar energy heat collecting system cannot meet the heating requirement, the stored heat is released to heat the steam, clean energy is fully utilized, and economy of the central heating system is improved.

Description

technical field [0001] The invention relates to a central heating system based on distributed heating and heat storage technology, in particular to a solar heating system with a phase change heat storage device, which belongs to central heating, medium and high temperature solar energy utilization, energy storage, energy and the environment and other fields. Background technique [0002] At present, my country's urban heating sources include: coal, fuel oil, natural gas, electric energy, nuclear energy, solar energy, geothermal energy, etc., but the energy used for central heating is still dominated by coal, and some economically developed cities have begun to use natural gas and fuel oil. With the rapid development of China's economy, the continuous improvement of people's living standards and industrialization levels, and the promotion of relevant policies such as environmental protection and energy conservation, urban heating has developed rapidly. [0003] When the cent...

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Problems solved by technology

[0005] In order to improve the phenomenon of insufficient heating steam (water) temperature in the existing central heating pipe network, the present invention provides a central heating system based on distributed heating heat storage technology, using solar heating, low-peak electricity heat storage and other technologies, A technology that can minimize operating costs, ensure system operation stability, reduce environmental pollution, and reduce carbon emissions

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