Photovoltaic curtain wall and double-source heat pump integrated system suitable for cold area

Abstract

The invention discloses a photovoltaic curtain wall and double-source heat pump integrated system suitable for a cold area. The system comprises a photovoltaic curtain wall (2), a ground source thermal component (3), an air source-ground source double-source heat pump unit (1), a phase change heat storage water tank (4) and a corresponding air conditioner tail end. The air flow output end of the photovoltaic curtain wall (2) is connected with an air inlet of the air source-ground source double-source heat pump unit (1) through a first electronic control air valve (6) through a pipeline (5). The air flow output end of the photovoltaic curtain wall (2) is connected with an air outlet (9) of the air source-ground source double-source heat pump unit (1) through a second electronic control air valve (7) and a draught fan (8) through the pipeline (5). By means of the system, double-effect utilization of solar thermoelectricity is achieved, and the power generation efficiency of a silicon cell is improved due to the fact that a PVT device is cooled; peak load shifting of solar energy is achieved; the problem that the solar heating guaranteeing rate is low is effectively solved, and one machine is provided with two sources; and cost increase is small, and the period of investment return is short.

Description

technical field [0001] The invention belongs to the technical field of renewable energy utilization, and in particular relates to the integrated technology of building heating and cooling. Background technique [0002] Energy, environment and sustainable development are the themes of the survival and development of human society in the 21st century, and the development of solar thermal utilization technology has received global attention. Heat pump technology can effectively improve the quality of low-grade heat sources in nature and meet the demand for cold and heat in buildings and technological processes. In recent years, it has developed by leaps and bounds in my country and the world. However, the operation of the heat pump system is affected by many aspects such as low-level heat sources, climate conditions, and user system conditions. In order to make it operate normally and stably, it often needs to combine other energy sources. [0003] The concept of photovoltaic ...

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Problems solved by technology

[0007] However, the existing heat pumps and systems have not been considered in combination with actual conditions, and lack of overall integrated design for specific situations. For example: air source heat pumps can obtain low-grade heat from the surrounding air to produce domestic hot water, air source The cost of heat pump is low, but it is also limited by the outdoor air temperature, so it is difficult to promote and use in cold areas, and the combination of building-integrated PVT system is expected to overcome this problem; The heat emitted downward to the soil is greater than the heat absorbed from the soil under winter heating conditions. Therefore, as the heat pump system operates year by year, heat accumulation will occur in the underground soil, and the soil temperature will gradually increase, resulting in a decrease in the operating efficiency of the soil source heat pump.

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