Solar energy-fuel cell-heat pump combined energy supply system

Abstract

The invention relates to a double-source heat pump, in particular to a solar energy-fuel cell-heat pump combined energy supply system. The solar energy-fuel cell-heat pump combined energy supply system comprises a water source heat pump part, an air source heat pump part, a control device and a battery, wherein the water source heat pump part comprises a solar photovoltaic thermal collector, a double-source heat pump, a water storage tank and an intermediate heat exchanger; a water outlet of the solar photovoltaic thermal collector is connected with a water inlet of the water storage tank; a first water outlet of the water storage tank communicates with a first water inlet of the double-source heat pump; a first water outlet of the double-source heat pump is connected with a user; a secondwater inlet of the double-source heat pump is connected with the user; a second water outlet of the double-source heat pump is connected with a first water inlet of an intermediate heat exchanger, afirst water outlet of the intermediate heat exchanger is connected with a second water inlet of the water storage tank, and a second water outlet of the water storage tank is connected with a water inlet of the solar photovoltaic thermal collector A. The light energy and heat energy of solar energy are fully utilized, and a high-efficiency methanol reforming fuel cell fuel processing system for recycling is introduced to provide stable low-temperature heat source and sufficient electric energy for the heat pump, waste heat is recovered and utilized, and the utilization rate of energy is greatly improved.

Description

technical field [0001] The invention relates to a dual-source heat pump, especially a solar-fuel cell-heat pump composite energy supply system, Background technique [0002] Photovoltaic utilization technology is a main way of solar energy utilization technology, while the photoelectric conversion rate of ordinary solar silicon cells is only about 12%-17% under standard conditions, and more than 83% of the solar radiation energy absorbed by it has not been utilized. The radiation is absorbed by the battery and converted into heat energy, resulting in a decrease in the photoelectric conversion rate. In order to reduce the temperature of the photovoltaic backplane and improve the photoelectric conversion efficiency, water is usually used for cooling and heat dissipation. This technology is called photovoltaic photothermal technology. Since the cooling water cools the photovoltaic backplane, the temperature of the water is high, and more than 83% of the solar energy is convert...

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Problems solved by technology

Usually, the solar photovoltaic photothermal collector is combined with the heat pump system, and the cooled cooling water is directly used as the low-temperature heat source of the heat pump for the user's heating, which greatly improves the utilization efficiency of solar energy, but it still needs to be increased when the solar energy resource is insufficient. Other auxiliary heat sources, and the heat supply capacity of the heat pump is limited by the heat collected by the solar energy, and the scale is generally relatively small

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