Solar Panels can generate electricity, thereby reducing the use of fossil fuels that emit greenhouse gases, and to combat global warming. At the same time, they can shield the earth from the sun. This extra cover should also be able to fight climate change because less solar radiation means more cool earth, right?
However, scientists have recently reported in Nature-Climate Change magazine that things are not that simple. Studies have confirmed that Solar Panels actually make some places more hot. The researchers simulated an idealized scenario: a desert and a city area that was completely covered by Solar Panels. Since the weather depends on many factors, the research team had to simulate an extreme situation to confirm that the observed changes were really caused by Solar Panels.
The simulation shows that the extra shelter first makes the covered area cool, but the temperature drop has changed the local weather pattern. For example, about 50 years after the installation of the panels, India and eastern Australia have become more warm due to reduced precipitation. At the same time, the northwest of the United States because the wind mode changes have become more warm.
Nevertheless, the benefits of Solar Panels still outweigh the shortcomings. In reality, large-scale Solar Panels cover, can make local warming less than 0.5 degrees Celsius. This is far below the predicted global temperature in the next century will rise several degrees Celsius, provided that humans continue to burn fossil fuels. However, the authors suggest that large-scale installation of Solar Panels should not be the only alternative to fossil fuels.
1. PV module square: by the solar cell components (also known as photovoltaic cell components) in accordance with the system needs string, parallel, in the sunlight will be converted into solar energy output, it is the core components of solar photovoltaic systems.
2. Battery: the solar battery components generated by the energy stored when the lack of light or at night, or the load demand is greater than the solar battery components issued by the amount of electricity will be stored to meet the load energy requirements, it is the solar photovoltaic system Of the energy storage components. At present, solar photovoltaic systems commonly used in lead-acid batteries, for the higher requirements of the system, usually using deep discharge valve-regulated sealed lead-acid batteries, deep discharge liquid lead-acid batteries.
3. Controller: It is the battery charge and discharge conditions to be defined and controlled, and in accordance with the load power requirements of solar cell components and battery control of the load power output, the entire system is the core control part. With the development of solar photovoltaic industry, the controller is becoming more and more powerful, with the traditional control part, inverter and monitoring system integration trends.
4. Inverter: In the solar photovoltaic power supply system, if the AC load, then it is necessary to use the inverter device, the solar cell components generated by the DC or battery release of DC into the load required AC.
The basic principle of solar photovoltaic power supply system is in the sunlight, the solar battery components generated by the control of the controller to the battery charge or meet the load requirements in the case of direct load to the load, if the sun is not enough or at night Then the battery under the control of the controller to the DC load power supply, for the AC load of the photovoltaic system, the need to increase the inverter DC will be converted into alternating current. The application of photovoltaic systems has many forms, but its basic principles are similar.
3.0 Solar cell module power calculation method
Silicon Solar Panels capacity is the flat panel solar panel power generation WP. The power consumption of the solar power depends on the power H (WH) that can be consumed by the load 24 h. The power consumed by the load rated power and the load 24 h determines the capacity P (AH) consumed by the load for 24 h, taking into account the average daily sunshine And the impact caused by rainy days, calculate the solar array operating current IP (A).
(V), and then take into account the temperature rise of the solar cell due to temperature rise caused by the temperature rise voltage VT (v) and the battery nominal voltage to determine the battery voltage from the battery nominal voltage, (V) of the solar cell array can be calculated from the working voltage of the solar cell array (A) and the operating voltage VP (V), and the working voltage VP (V) of the solar cell array can be calculated by the influence of the voltage drop VD (V) Can determine the flat-panel solar panel power generation WPW, to design the solar panel capacity, by the design of the capacity of WP and solar array operating voltage VP, to determine the number of silicon cells and the number of parallel chips.