Near-zero-energy-consumption zero-carbon building multi-energy complementary energy supply system and method

Abstract

The invention relates to a near-zero-energy-consumption zero-carbon building multi-energy complementary energy supply system. The energy supply system comprises a building roof photovoltaic system, an electrochemical energy storage system, a hydrogen energy system, a heat supply system and a jet type refrigerating system, and the heat supply system is connected with the hydrogen energy system and the jet type refrigerating system. In order to fully consume renewable energy sources of the building, two forms of electrochemical energy storage and hydrogen energy storage are adopted, the energy storage problem can be solved in a coordinated and matched mode, the energy density of the energy storage system is improved, the charging and discharging frequency and charging and discharging depth of electrochemical energy storage can be reduced, and the service life of the energy storage system is prolonged.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of energy, and relates to clean energy, in particular to a multi-energy complementary energy supply system and method for a near-zero energy consumption and zero-carbon building. Background technique [0002] The goal of peaking carbon emissions and the vision of carbon neutrality put forward requirements for the low-carbon transformation of energy and electricity. At present, my country's building energy consumption accounts for about 1 / 3 of the country's total energy consumption, which is only the consumption of buildings during construction and use. Energy ratio, if the energy consumed in the production of building materials is added (accounting for 16.7% of the total energy consumption of the whole society), the energy consumption related to buildings will account for 46.7% of the total energy consumption of the society, and the carbon dioxide gas emitted by buildings 40% of total global...

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Problems solved by technology

Building energy requirements include electricity, heat, and cooling. If only the self-sufficiency of electric energy is considered, it will be more difficult to realize and cause energy waste; and the life of electrochemical energy storage is limited, which is related to the number of charge and discharge, and in limited buildings Considering the size of the building and the economics of investment, it is impossible to equip a large-capacity energy storage system to store the difference between the building's renewable energy power generation load and electricity load, resulting in the waste of some energy

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