Novel net zero energy consumption building energy system based on hydrogen energy storage

Abstract

The invention discloses a novel net zero energy consumption building energy system based on hydrogen energy storage. The system comprises two solar energy utilization devices of a solar photovoltaic panel and a solar water heater.The solar photovoltaic panel is connected with a DC / DC converter to perform voltage transformation of the power generated by the solar photovoltaic panel into the voltagesuitable for inversion of an inverter and electrolysis of an electrolytic cell and then connected to a controller. The controller is respectively connected with a hydrogen energy storage unit and a bus box, and part of the power generated by the solar photovoltaic panel is transmitted to the bus box through the controller for normal use of the net zero energy consumption building after being inverted by the inverter, and the excess electricity is used for electrolyzing water for hydrogen and storage. The intermittent and fluctuating problems existing in the solar photovoltaic power generationsystem can be solved, the net zero energy consumption building energy system is enabled to work normally in continuous rainy days and the utilization of waste heat in the SOFC fuel cell system is also realized so as to improve the efficiency of the SOFC fuel cell.

Description

technical field [0001] The invention belongs to the technical field of energy utilization and relates to the design and application of a new type of net zero energy consumption building energy system based on hydrogen energy storage. Background technique [0002] Net zero energy buildings refer to buildings that do not consume conventional energy and rely entirely on solar energy or other renewable energy sources. Today, as the problem of energy consumption in buildings is becoming more and more serious, how to achieve "net zero energy consumption" has become the ultimate goal pursued by the construction industry in various countries. Net-zero energy buildings adopt energy-saving design, adopt high-efficiency energy-saving equipment, and use renewable energy such as solar energy and wind energy to power buildings. Due to the instability of solar photovoltaic or wind power generation, and it is difficult to connect to the grid, at present, the excess electricity is stored in...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is how to overcome the defects of the prior art, so as to solve the problem of intermittent and fluctuations in the solar photovoltaic power generation system, so that the net zero energy building energy system can still work normally in continuous rainy days, and at the same time realize SOFC fuel Utilization of waste heat in battery systems to improve the efficiency of SOFC fuel cells

And when the hydrogen produced by the mixed reforming of ethanol and water is used to solve the continuous rainy weather, when the SOFC fuel cell generates electricity, the H 2 Insufficient content; and realize the utilization of waste heat after SOFC fuel cell reaction to improve the final efficiency of SOFC fuel cell

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