A solar reflective concentrating photovoltaic system and its reflective concentrating thermoelectric supply method

Abstract

Provided are a solar reflecting and concentrating photovoltaic system and a reflecting and concentrating thermoelectricity supply method of the solar reflecting and concentrating photovoltaic system. The reflecting and concentrating thermoelectricity supply method comprises the following steps: an optical energy receiver which comprises a heat exchanger, a photovoltaic cell assembly and photovoltaic cell cooling equipment is installed on a light reflection path of a light reflection device; the light reflection device is used for reflecting and concentrating sunlight to the optical energy receiver; the light reflection device is controlled to rotate and move so as to face towards the sun; the distance between the optical energy receiver and the light reflection device is adjusted according to a thermoelectricity supply requirement instruction; the photovoltaic cell assembly converts received optical energy which is obtained by reflecting the sunlight into electric energy and transmits the electric energy to users; the photovoltaic cell cooling water equipment and the heat exchanger convey received hot water which is heated by the reflected sunlight to a water heat exchanger and a cooling device in sequence; the air speed of a speed regulation blower is controlled according to the water temperature value in radiating tubes of the cooling device so as to cool the water in the radiating tubes; a circulating water pump conveys the cooled water to the heat exchanger and the cooling water equipment.

Description

technical field [0001] The invention relates to concentrating photovoltaic technology, in particular to self-adaptive reflective concentrating photovoltaic technology, in particular to a solar reflective concentrating photovoltaic system and a reflection concentrating thermoelectric supply method thereof. Background technique [0002] Concentrating photovoltaic technology is a solar power generation technology that uses optical materials such as lenses or mirrors to concentrate a large area of ​​sunlight into the concentrating area where photovoltaic cells are installed. Wherein, the area ratio of the reflective area or the transmissive area to the light-gathering area is the light-gathering intensity. The concentration intensity of the current high-power concentrated photovoltaic system can reach 300-1000 times. [0003] Since the photovoltaic cells of the concentrated photovoltaic system can only convert a part of the total solar radiation energy into electrical energy (t...

AI Technical Summary

Problems solved by technology

The disadvantage of this design is that the duration of the maximum value of DNI is short, because the maximum value of DNI often occurs at noon in summer, when the straight-line distance from the concentrated photovoltaic system to the sun is the shortest, and as time goes by , the linear distance from the concentrated photovoltaic system to the sun becomes longer, and the maximum value of DNI cannot be maintained

Therefore, most of the existing concentrating photovoltaic systems work under the condition of insufficient light energy intensity, which cannot reach the designed rated power generation output, and the work efficiency is low, resulting in a huge waste of resources.

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