An air-cooled PVT air conditioner external unit and its operating method

Abstract

The invention relates to an air-cooled PVT air conditioner outdoor unit and its operation method. The air-cooled PVT outdoor unit includes a fan, a PVT condensation / evaporation coil branch, a PVT heat exchange plate, a conventional condensation / evaporation coil branch, and a PVT Water coil. Combining the air conditioner condenser / evaporator and PVT components, integrating the entire outdoor unit to work and install together, making full use of daytime solar energy and nighttime long-wave radiation energy, and adopting different cooling / heating / power supply schemes for different seasons and time periods, to achieve The advantages of PVT components and the condenser / evaporator of the air conditioning unit complement each other to improve the utilization rate of the system throughout the year and around the clock. In the present invention, the PVT assembly and the air-cooled outdoor unit can work independently and jointly, which is more convenient to ensure the cooling / heating capacity of the system in all seasons and different outdoor environments, and achieve the purpose of energy saving.

Description

technical field [0001] The invention relates to the technical fields of solar energy application and air conditioning, in particular to an air-cooled PVT air conditioner external unit combined with solar photovoltaic thermal (PVT) technology and an operating method. Background technique [0002] With the continuous increase of people's demand for energy, energy saving has gradually become the focus of people's attention. However, the structure of the air conditioning system is complex, and the energy saving potential is great. Air-cooled air-conditioning units account for an increasing share in the air-conditioning market due to their advantages of simple structure and not being limited by water resources. However, in summer, the air temperature around the condenser inside the air conditioner’s external unit is high, resulting in increased power consumption of the air conditioner unit, a decrease in cooling capacity, and even shutdown problems due to excessive back pressure...

AI Technical Summary

Problems solved by technology

However, the structure of this system is complex. Regardless of cooling in summer or heating in winter, the system needs to use the heat generated by photovoltaic panels. When the solar radiation is weak, the water in the heat storage tank does not get much heat from photovoltaic panels, which will affect Cooling and heating effects, or even unable to work normally, the annual utilization rate of the system is low, and the floor space is large

[0005] At present, a single PVT module can only play the role of power generation and heating, and due to the intermittent and fluctuating influence of solar radiation, it is difficult for PVT modules to meet the electricity and heat requirements at night and in rainy weather

However, the combination of independent PVT components and air-cooled air-conditioning systems has the problems of complex system, large footprint, and low utilization rate of PVT components at night.

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