Fused salt heat storage and heat-conducting oil heat transfer system as well as heat conducting method

Abstract

The invention provides a fused salt heat storage and heat-conducting oil heat transfer system. The fused salt heat storage and heat-conducting oil heat transfer system comprises a fused salt heat storage tank, a heat-conducting oil circulating main pipeline, a heat exchanger unit and a heating system, wherein the fused salt heat storage tank is filled with fused salt subjected to heat storage; a heating device can be started through grid off-peak electrical energy so as to heat the fused salt subjected to heat storage and the heat-conducting oil, and meanwhile, heat exchange between the heatedheat-conducting oil and the fused salt subjected to heat storage is carried out, so that a heating process of the fused salt subjected to heat storage can be further quickened until the fused salt subjected to heat storage reaches a set temperature, and thus, the starting time of the system is shortened, and the operation efficiency of the system is improved; and after heat storage is carried outcompletely, an external supply medium is heated through the heat exchanger group. The system disclosed by the invention has the advantages that the fused salt subjected to heat storage is heated by utilizing the grid off-peak electrical energy, so that electro-thermal conversion is completed, and then the external supply medium is heated through the converted heat, and thus, thermoelectric decoupling is realized, and therefore, the utilization efficiency of energy is improved.

Description

technical field [0001] The invention relates to the technical field of new energy utilization, in particular to a molten salt heat storage and heat conduction oil heat transfer system and a heat conduction method. Background technique [0002] In recent years, on the one hand, my country's new energy power stations have developed rapidly, mainly including: photovoltaic, wind power stations and solar thermal power stations, and the installed capacity has maintained a rapid growth trend. In particular, photovoltaic power generation and wind power generation are typical intermittent power sources, and their power generation output has the characteristics of randomness and volatility. Due to the randomness and volatility of their power supply, they will have a great impact on the power system; And the power surplus situation will be more prominent in the future, and the contradiction between the rapid increase in heat supply demand of cogeneration units and the slow or negative ...

AI Technical Summary

Problems solved by technology

The above two situations lead to difficulties in peak regulation of the power grid, severe wind and light curtailment, and difficulty in achieving thermoelectric decoupling for thermal power units during the winter heating period, and the stability of the power grid is highlighted

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