Regenerative solar energy, electric energy and coal-fired thermal energy combined heating heat source system

Abstract

The invention discloses a heat accumulation type solar, electric and coal firing heat combined heating source system, which comprises a solar heat collection and accumulation unit, a boiler combined heat accumulation unit, a water mixing control unit, an external network water supply pipe and an external network water return pipe, wherein a first heat accumulation water tank is arranged in the solar heat collection and accumulation unit; an electric boiler, a coal-fired boiler and a second heat accumulation water tank are arranged in the boiler combined heat accumulation unit; the first heat accumulation water tank is connected with the electric boiler, the coal-fired boiler and the second heat accumulation water tank through a first water supplementing pipeline respectively; a first heat exchanger is arranged in the first heat accumulation water tank; a second heat exchanger is arranged in the second heat accumulation water tank; the first and second heat exchangers are connected through a connecting pipe which is communicated with the external network water return pipe through a bypass pipeline. The system has the beneficial effects that solar energy and valley power can be maximally used as urban heating sources, the peak load shifting of power utilization is realized, and the system is favorable for exploiting the potential of a power grid, increasing the load rate and improving the safety of the power grid.

Description

technical field [0001] The invention relates to a heat source system for combined heat supply, in particular to a combined heat source system for heat storage of solar energy, electric energy and coal-fired heat energy. Background technique [0002] At present, the types of heating sources in cities are single, and most of them rely on coal-fired thermal energy for heating, and the emissions of coal-fired boilers will cause serious pollution to the atmospheric environment. Therefore, reducing the proportion of coal-fired heating in urban heating, increasing the proportion of clean energy use, and improving urban heat source emissions have become urgent problems to be solved in energy conservation and emission reduction. The existing practice is often to eliminate small boiler rooms, switch from coal to gas, and improve boiler dust removal and desulfurization and dust removal equipment. However, mineral fuels are still the main heat source fuels, and the utilization rate of c...

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Problems solved by technology

[0003] The main purpose of the present invention is to solve the problem that the heat source fuel in the existing cities is still dominated by mineral fuels, and the utilization rate of clean energy and renewable energy is low;

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