WO2016045170A1 - 一种提高太阳能光伏电池发电效率的方法 - Google Patents

一种提高太阳能光伏电池发电效率的方法 Download PDF

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WO2016045170A1
WO2016045170A1 PCT/CN2014/090723 CN2014090723W WO2016045170A1 WO 2016045170 A1 WO2016045170 A1 WO 2016045170A1 CN 2014090723 W CN2014090723 W CN 2014090723W WO 2016045170 A1 WO2016045170 A1 WO 2016045170A1
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solar photovoltaic
photovoltaic cell
heat sink
chimney
power generation
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PCT/CN2014/090723
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English (en)
French (fr)
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陶文铨
黄明华
陈磊
何雅玲
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西安交通大学
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/024—Arrangements for cooling, heating, ventilating or temperature compensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the invention belongs to the field of new energy utilization technologies, and particularly relates to a method for improving power generation efficiency of solar photovoltaic cells.
  • Solar energy is an inexhaustible source of renewable energy. It is rich in resources, free to use, and free from any pollution. Efficient use of solar energy is an effective way to solve energy and environmental problems.
  • Solar photovoltaic power generation converts solar radiant energy into electrical energy through a photoelectric effect conversion device.
  • the solar photovoltaic cell generates electric energy and its plate temperature increases due to photoelectric conversion heat generation and solar radiation heating. Studies have shown that for every 1 °C increase in solar photovoltaic cell temperature, power generation efficiency drops by 0.5% (Cai Kang, Guan Xin, Liu Peng, Tang Yingtang. Design and research of solar photovoltaic cell coolers. Energy Research and Information, 2009.11). Therefore, reducing the operating temperature of the solar photovoltaic panel can effectively improve the power generation efficiency of the solar photovoltaic cell.
  • the object of the present invention is to provide a method for improving the power generation efficiency of a solar photovoltaic cell in view of the deficiencies of the prior art.
  • a method for improving power generation efficiency of a solar photovoltaic cell wherein a heat sink is disposed on a back surface of the solar photovoltaic panel, the two ends of the heat sink are open, and a chimney is disposed at an outlet of the heat sink; air flows in from the inlet of the heat sink, and is cooled
  • the solar photovoltaic panel is heated at the same time, forming a temperature difference with the surrounding environment, and generating a driving force due to the difference in density.
  • the flow rises along the chimney to the environment, while the ambient air flows continuously from the inlet of the radiator to cool the solar photovoltaic panels.
  • a further improvement of the invention consists in that the solar photovoltaic panel is attached to the top surface of the heat sink.
  • a further improvement of the invention is that the top surface of the heat sink is made of a thermally conductive material.
  • a further improvement of the present invention is that a plurality of fins for enhancing heat exchange are disposed on the inner wall of the heat sink adjacent to the solar photovoltaic panel.
  • a further improvement of the invention is that the angle between the chimney and the heat sink is 90°.
  • a further improvement of the invention consists in that the outlet of the chimney is vertically upwards.
  • the invention provides a radiator on the back of the solar photovoltaic panel, and a chimney device is arranged at the outlet of the radiator, so that the airflow flows in from the inlet of the radiator, is heated while cooling the solar photovoltaic panel, and at the same time, due to the solar photovoltaic panel
  • the heating creates a temperature difference with the surrounding environment, thereby generating a density difference to drive the air to the chimney, while the external cold air continuously flows from the radiator inlet to cool the solar photovoltaic panel, so that the operating temperature of the solar photovoltaic panel is maintained within a reasonable range.
  • the invention has the advantages of environmental protection, simple structure and convenient operation and maintenance.
  • Figure 1 is a schematic view showing the entire structure of the present invention.
  • 1 is a radiator
  • 2 is a fin
  • 3 is a solar photovoltaic panel
  • 4 is a chimney.
  • a method for improving the power generation efficiency of a solar photovoltaic cell is provided.
  • the method is provided with a heat sink 1 on the back side of the solar photovoltaic panel 3, and a plurality of reinforcements are arranged on the inner wall of the heat sink 1 near the solar photovoltaic panel 3.
  • a fin 2 for heat exchange, the two ends of the radiator 1 are open, and a chimney 4 is disposed at an outlet of the radiator 1; air flows in from the inlet of the radiator 1, and is heated while cooling the solar photovoltaic panel 3, and the surrounding environment The air generates a temperature difference, and thus the density difference drives the air to flow upward.
  • the suction of the chimney 4 causes the heated air to continuously flow to the chimney 4, while the cold air in the surrounding environment continuously flows into the radiator 1 inlet to cool the solar energy.
  • the back surface of the photovoltaic panel 3 maintains the operating temperature of the solar photovoltaic panel 3 within a reasonable range, thereby improving the power generation efficiency of the solar photovoltaic panel 3.
  • the solar photovoltaic panel 3 is attached to the top surface of the heat sink 1.
  • the top surface of the heat sink 1 is made of a heat conductive material.
  • the angle between the chimney 4 and the radiator 1 is 90°, and the outlet of the chimney 4 is vertically upward.
  • the invention combines the natural cooling and the forced cooling of the air by the suction action of the chimney, continuously cools the working solar photovoltaic panel, and maintains the working temperature at a reasonable temperature, which is more widely used than the current natural cooling solar energy.
  • the cooling efficiency of photovoltaic panels is high, and the power generation efficiency of solar photovoltaic panels is improved.
  • the invention has low investment, energy saving and environmental protection, and is easy to install and maintain, and is in line with the development trend of new energy.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

一种提高太阳能光伏电池发电效率的方法，该方法在太阳能光伏电池板（3）的背面设置有散热器（1），该散热器（1）的两端开口，在散热器（1）的出口设置有烟囱（4）；空气从散热器（1）的入口流入，在冷却太阳能光伏电池板（3）的同时被加热，与周围环境形成温度差，由于密度差产生驱动力使气流沿着烟囱（4）上升流入环境，同时周围环境的空气源源不断地从散热器（1）的入口流入来冷却太阳能光伏电池板（3）。该方法能对太阳能电池板进行较好的冷却，提高太阳能光伏电池板的发电率。

Description

一种提高太阳能光伏电池发电效率的方法 技术领域
本发明属于新能源利用技术领域，具体涉及一种提高太阳能光伏电池发电效率的方法。
背景技术
能源与环境是世界面临的两大问题。太阳能是取之不尽，用之不竭的可再生能源，它资源丰富，可免费使用，并对环境无任何污染。对太阳能的高效利用是解决能源与环境问题的有效途径。太阳能光伏发电是通过光电效应转换装置把太阳辐射能转换成电能。但是太阳能光伏电池在产生电能的同时由于光电转化生热和太阳辐射的加热其板体温度也会升高。研究表明太阳能光伏电池温度每升高1℃，发电效率下降0.5％(蔡康，关欣，刘鹏，唐应堂.太阳能光伏电池冷却器的设计与研究.能源研究与信息，2009.11)。因此降低太阳能光伏电池板工作温度能有效提高太阳能光伏电池发电效率。
发明内容
本发明的目的在于针对现有技术的不足，提供了一种提高太阳能光伏电池发电效率的方法。
为达到上述目的，本发明采用的技术方案是：
一种提高太阳能光伏电池发电效率的方法，在太阳能光伏电池板的背面设置有散热器，该散热器的两端开口，在散热器的出口设置有烟囱；空气从散热器的入口流入，在冷却太阳能光伏电池板的同时被加热，与周围环境形成温度差，由于密度差产生驱动力使气 流沿着烟囱上升流向环境，同时周围环境的空气源源不断地从散热器的入口流入来冷却太阳能光伏电池板。
本发明进一步的改进在于：太阳能光伏电池板粘贴在散热器的顶面上。
本发明进一步的改进在于：散热器的顶面采用导热材料制成。
本发明进一步的改进在于：在散热器靠近太阳能光伏电池板的内壁上设置有若干强化换热的翅片。
本发明进一步的改进在于：烟囱与散热器的夹角呈90°。
本发明进一步的改进在于：烟囱的出口竖直向上。
本发明在太阳能光伏电池板背面设置散热器，并在散热器的出口设置烟囱装置，进而使气流从散热器的入口流入，在冷却太阳能光伏电池板的同时被加热，同时由于太阳能光伏电池板的加热与周围环境产生温度差，由此产生密度差驱动空气流向烟囱，同时外部冷空气源源不断地从散热器入口流入来冷却太阳能光伏电池板，使太阳能光伏电池板的工作温度维持在合理范围内，提高太阳能光伏电池板的发电效率。
本发明有如下两个个明显的优点：
1、太阳能光伏电池板得到有效的冷却，其发电效率可显著上升；
2、本发明绿色环保，结构简单，运行维护简便。
附图说明
图1是本发明的整体结构示意图。
图中：1为散热器，2为翅片，3为太阳能光伏电池板，4为烟囱。
具体实施方式
下面结合附图对本发明的结构原理和工作原理作进一步详细说明。
参见图1，本发明一种提高太阳能光伏电池发电效率的方法，该方法在太阳能光伏电池板3的背面设置有散热器1，在散热器1靠近太阳能光伏电池板3的内壁上设置有若干强化换热的翅片2，该散热器1的两端开口，在散热器1的出口设置有烟囱4；空气从散热器1入口流入，在冷却太阳能光伏电池板3的同时被加热，与周围环境空气产生温差，并由此产生密度差驱动空气向上流动，由于烟囱4的抽吸作用使加热的空气源源不断地向烟囱4流动，同时周围环境中的冷空气不断流入散热器1进口来冷却太阳能光伏电池板3背面，使太阳能光伏电池板3的工作温度维持在合理范围内，提高太阳能光伏电池板3的发电效率。
进一步地，太阳能光伏电池板3粘贴在散热器1的顶面上。散热器1的顶面采用导热材料制成。烟囱4与散热器1的夹角呈90°，且烟囱4的出口竖直向上。
本发明利用烟囱的抽吸作用把空气的自然冷却和强制冷却相结合，不断地冷却工作中的太阳能光伏电池板，使其工作温度维持在合理温度，比目前广泛采用的只是依靠空气自然冷却太阳能光伏电池板的冷却效率要高，同时提高太阳能光伏电池板的发电效率。本发明投资少，节能环保，安装维护简便，符合新能源的发展趋势。

Claims (6)

  1. 一种提高太阳能光伏电池发电效率的方法，其特征在于：在太阳能光伏电池板(3)的背面设置有散热器(1)，该散热器(1)的两端开口，在散热器(1)的出口设置有烟囱(4)；空气从散热器(1)的入口流入，在冷却太阳能光伏电池板(3)的同时被加热，与周围环境形成温度差，由于密度差产生驱动力使气流沿着烟囱(4)上升流向环境，同时周围环境的空气源源不断地从散热器(1)的入口流入来冷却太阳能光伏电池板(3)。
  2. 根据权利要求1所述的一种提高太阳能光伏电池发电效率的方法，其特征在于：太阳能光伏电池板(3)粘贴在散热器(1)的顶面上。
  3. 根据权利要求1所述的一种提高太阳能光伏电池发电效率的方法，其特征在于：散热器(1)的顶面采用导热材料制成。
  4. 根据权利要求1所述的一种提高太阳能光伏电池发电效率的方法，其特征在于：在散热器(1)靠近太阳能光伏电池板(3)的内壁上设置有若干强化换热的翅片(2)。
  5. 根据权利要求1所述一种提高太阳能光伏电池发电效率的方法，其特征在于：烟囱(4)与散热器(1)的夹角呈90°。
  6. 根据权利要求1所述一种提高太阳能光伏电池发电效率的方法，其特征在于：烟囱(4)的出口竖直向上。
PCT/CN2014/090723 2014-09-26 2014-11-10 一种提高太阳能光伏电池发电效率的方法 WO2016045170A1 (zh)

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CN108449047B (zh) * 2018-03-23 2023-11-03 山东大学 一种光伏光热综合利用系统及方法

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