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Application of reflective film for increasing photoelectric conversion efficiency of roof distributed photovoltaic power generation system

A photoelectric conversion efficiency, distributed photovoltaic technology, applied in the direction of photovoltaic power generation, photovoltaic modules, electrical components, etc., can solve the problems of low service life of photovoltaic inverters, low photovoltaic power conversion efficiency, affecting power generation, etc. Photoelectric conversion efficiency, excellent reflection performance, and the effect of reducing the surface temperature of the cabinet

Inactive Publication Date: 2019-09-24
哈尔滨拓百世环保涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the problems of low photoelectric conversion efficiency of existing photovoltaic power generation, low service life of photovoltaic inverters and affecting power generation, and provides an application of reflective film for increasing photoelectric conversion efficiency of roof distributed photovoltaic power generation system

Method used

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  • Application of reflective film for increasing photoelectric conversion efficiency of roof distributed photovoltaic power generation system
  • Application of reflective film for increasing photoelectric conversion efficiency of roof distributed photovoltaic power generation system
  • Application of reflective film for increasing photoelectric conversion efficiency of roof distributed photovoltaic power generation system

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specific Embodiment approach 1

[0023] Specific Embodiment 1: This embodiment is an application of reflective film to increase the photoelectric conversion efficiency of the roof distributed photovoltaic power generation system: the application of the reflective film to increase the photoelectric conversion efficiency of the roof distributed photovoltaic power generation system.

[0024] The reflective film described in this embodiment is matched with photovoltaic power generation to form a high solar reflectance layer, which can effectively reflect sunlight. The temperature of the roof can be kept within the optimal operating temperature range of the photovoltaic power generation system, and it helps more sunlight to be emitted to the solar panels, increasing the efficiency of photovoltaic power generation and prolonging the service life of the roof.

[0025] The beneficial effects of this embodiment are:

[0026] The theoretical efficiency of a solar cell is determined by the following equation:

[0027] ...

specific Embodiment approach 2

[0032] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the reflective film is a metal reflective film, a dielectric reflective film, a metal dielectric reflective film, an aluminum foil heat-insulating coil, a nano-airbag reflective film, a TPO coil, High-energy reflective film, nanofiber airgel film, nano-airgel thermal insulation blanket, infrared stealth cover or nano-vacuum insulation board. Others are the same as in the first embodiment.

[0033] The reflective film in this embodiment is a reflective film that reflects sunlight; the reflective film is a commercially available product.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the reflective film is laid or pasted on the base layer of the roof. Others are the same as in the first or second embodiment.

[0035] In this embodiment, the reflective film is laid or pasted on the roof base layer, specifically between the roof base layer and the photovoltaic power generation panel.

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Abstract

The invention discloses an application of a reflective film for increasing the photoelectric conversion efficiency of a roof distributed photovoltaic power generation system, and relates to an application of the reflective film. The invention solves problems that the existing photovoltaic power generation is low in photoelectric conversion efficiency, the service life of a photovoltaic inverter is short, and the generating capacity is influenced. According to the invention, the reflective film is arranged on a roof foundation layer or the surface of an inverter cabinet. The reflective film provided by the invention can reduce the roof surface temperature by 5-25 DEG C, thereby reducing the temperature of the photovoltaic power generation panel, increasing the roof photoelectric conversion efficiency, and increasing the roof distributed photovoltaic photoelectric conversion efficiency by 1-6%. The temperature in the inverter cabinet can be reduced by more than 5 DEG C. The service life of electronic equipment in the cabinet is prolonged by more than 2 years, the photovoltaic power generation amount is increased by 0.3%-1.5%, and the equipment faults are reduced. Therefore, the maintenance cost is saved. The reflective film is suitable for the distributed photovoltaic power generation system.

Description

technical field [0001] The invention relates to the application of a reflective film. Background technique [0002] According to the 2018 national power industry statistics released by the National Energy Administration, as of 2018, grid-connected solar energy was 174.63GW. Among them, 44.38GW of new solar energy was installed in 2018, a year-on-year decrease of 18%, centralized about 23GW, a year-on-year decrease of 31%, and distributed about 20GW, a year-on-year increase of 5%. The distributed photovoltaic industry is increasing. [0003] Problems faced by roof distributed photovoltaics: [0004] 1. Low efficiency and long payback period. For example, polysilicon photovoltaic modules decay by 2.5% in the first year, and then decrease by 0.7% year by year. [0005] 2. When the temperature of photovoltaic modules is too high, the photoelectric conversion rate of solar cells will decrease, and at the same time, the service life of electronic components will be reduced. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/22H02S40/42H02S40/32
CPCH02S40/22H02S40/32H02S40/42Y02B10/10Y02E10/52
Inventor 吴征
Owner 哈尔滨拓百世环保涂料有限公司
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