Solar energy and fuel gas complementary self-sustaining heat supply system and method

Abstract

The invention discloses a solar energy and fuel gas complementary thermophotovoltaic self-sustaining heat supply system and method. The system comprises a thermophotovoltaic power generation system, a heat storage type solar heat collection system, a steam generation system and a self-sustaining control system. A solar heat collector collects solar radiation energy and converts the solar radiation energy into heat energy of a heat conduction working medium, and the heat conduction working medium circularly flows to a steam generator to heat feed water to generate hot water or steam after being heated by the thermophotovoltaic waste heat flue gas. Thermophotovoltaic power is used for maintaining the operation energy consumption of the whole system, and thermophotovoltaic exhaust smoke heats the heat conduction working medium, so that gradient utilization of energy is realized. At night or when the solar radiation amount is insufficient, a supplementary combustion chamber is started to provide heat for the system, and meanwhile, an auxiliary thermophotovoltaic device is additionally started for power supplement. The self-sustaining control system adjusts stable operation of the whole system, the whole system can achieve self-sustaining under the condition that a power grid is not connected, and continuous and stable heat energy is provided for users.

Description

technical field [0001] The invention belongs to the field of thermal energy engineering and new energy, and specifically relates to a self-sustaining photovoltaic self-sustaining heating system and method for solar energy and gas complementary thermal energy. Background technique [0002] As an important clean energy, solar energy is rich in resources and non-polluting. The efficient application of solar energy is an important measure to achieve energy conservation, emission reduction and sustainable development. As a medium and low temperature heat source, the most widely used method of solar energy is heat utilization, which mainly includes solar heat collection and heating. However, solar energy is greatly affected by time domain, region, and climate conditions, and its supply is not stable. Therefore, the complementary use of solar energy and fuel energy through reasonable technical design is a key means to realize the practical application of solar energy, which can sa...

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Problems solved by technology

[0004] Traditional electric energy production is mainly through thermal power conversion devices, including various power cycle engines. These devices contain rotating parts, high noise, large volume, and difficult to miniaturize parameters, which is not conducive to the practical application of heating systems

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