Long-distance district heating system based on thermoelectric synergy and thermoelectric synergy method

Abstract

The invention discloses a long-distance district heating system based on thermoelectric synergy and a thermoelectric synergy method. The long-distance district heating system specifically comprises amain heating heat source, a main heating network system, an auxiliary heat storage and supply system and a synergic power generation system module. The heat storage technology and the new energy powergeneration technology are adopted to cooperate with a district heating network in a synergic mode, heat storage and the heat network are combined, on the one hand, the problems that a long-distance district heating system conducts whole network operation under the low load working condition, thus, the heat waste is large, and the safety is low are solved, on the other hand, the problem that the heating load of the heat network under the peak heating condition is not enough is solved, the investment cost of the heat network is reduced to a certain extent, and the economical efficiency is improved. According to the long-distance district heating system, heat storage and the heat network are combined, the economical problem of synergy between new energy power generation and a power grid is solved, the problem about the heat storage electricity utilization cost is solved, and the new energy power generation economical efficiency and the heat network heat storage and supply economical efficiency are sufficiently achieved.

Description

technical field [0001] The invention relates to clean energy utilization technology and heat storage heat supply technology, in particular to a thermoelectric synergy method for a long-distance heating pipe network system. [0002] technical background [0003] With the increasingly severe environmental pollution and the vigorous promotion of comprehensive utilization of energy, the national and local governments have made overall plans to dismantle coal-fired heating boilers located in densely populated urban areas, and implement long-distance, large temperature difference, and large-diameter long-distance transmission. The pipeline heating project introduces the waste heat of large cogeneration thermal power plants far away from the city into the urban central heating pipe network, effectively utilizes the low-grade heat energy of the power plant, and reduces the pollution emissions of heating boilers in winter. In addition, due to the in-depth advancement of urban integrat...

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Problems solved by technology

However, due to the restriction of heat storage heat sources, the cost of conventional electric heat storage is too high, and the economy is limited. How to improve the economy of heat storage heat supply systems in long-distance district heating systems has become a challenge.

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