A buoyancy-driven photovoltaic panel pre-spray cooling system and cooling method

Abstract

The invention discloses a buoyancy-driven photovoltaic panel pre-spray cooling system and a cooling method. The cooling system includes: an air inlet chamber, the side of which is open, and the upper part of which is open; and a cooling channel, which is obliquely arranged above the air inlet chamber , which is sealed with the upper opening of the air inlet chamber; the photovoltaic panel is arranged on the upper side of the cooling channel, and forms a cooling channel with the inclined plate; the pre-spraying system includes a pre-spraying structure and a cooling water circulation system. The cooling water circulation system at least includes a circulating pump, and the circulating pump communicates with the water pool and the pre-spraying structure.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a buoyancy-driven photovoltaic panel pre-spray cooling system and cooling method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Solar photovoltaic power generation is the main form of renewable energy power supply at present. In the actual application process, the rise of the operating temperature of photovoltaic panels often causes problems such as low conversion efficiency and rapid aging, which greatly restricts the further popularization of photovoltaic power generation. Studies have shown that the photoelectric conversion efficiency of photovoltaic...

AI Technical Summary

Problems solved by technology

[0004] In addition, the inventors found that the current photovoltaic panel cooling technologies mainly include air cooling, liquid cooling, solar photovoltaic thermal cooling (PV / T) and new cooling: the improvement effect of air cooling is limited; liquid cooling has a large water consumption and is harmful to photovoltaic Plate scattering and receiving solar radiation uniformity are affected; solar photovoltaic photothermal cooling (PV / T) system is complex and suitable for large-scale centralized use; new cooling such as phase change materials, thermoelectric cooling, and radiation cooling are all in the theoretical research stage, large-scale Promoting applications is a huge challenge

To sum up, the current photovoltaic panel cooling has certain limitations, such as limited cooling capacity, large water consumption or complex structure, etc.

In addition, the existing technology is generally continuous cooling, and photovoltaic panels receive different solar radiation energy at different times of the day, and the operating temperature of photovoltaic panels at different times is also different, and continuous cooling cannot be self-adaptive according to the operating temperature of photovoltaic panels Cooling will inevitably cause energy waste, including cooling medium flow energy consumption and cooling medium loss, etc., resulting in poor cooling technology economy

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