The advantages and disadvantages of rooftop solar panels are:
1.Advantages
< p>1. Can use solar energy efficiently. Generating electricity from resources can save electricity. Currently, the state provides certain subsidies for the installation of electricity generation panels. Solar power generation can allow us to use less electricity and save on our families' electricity bills.2. Installing solar panels on the roof is relatively simple, generally speaking, it can be installed by a few workers in half a day.
2. Disadvantages
1. The investment in installing solar panels is relatively large. For some families, installation fees may be considered and will not be accepted.
2. This type of p panelSolar power generation is installed directly on the roof if it is exposed to wind and sun for a long time, corrosion problems may occur.
3. After all, solar panels are obtained from solar energy, so they can only be used on sunny days. However, if it is cloudy or the sunshine is not particularly sufficient, power consumption will be affected. .
4. During installation, holes must be drilled on the roof to penetrate the roof. If the subsequent installation is unreasonable, the roof will leak.
The principle of solar panels
A solar cell is a device that responds to light and can convert light energy into electricity, producing an effect photovoltaic. many types of materials, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, selenium copperum indium, etc. Their principles of energy production are basically the same. Now crystalline silicon is used as an example to describe the photovoltaic power production process. Crystalline P-type silicon is doped with phosphorus to obtain N-type silicon, forming a PN junction.
When light irradiates the surface of the solar cell, part of the photons are absorbed by the silicon material; the energy of the photons is transferred to the silicon atoms, causing the electrons to transition and become free electrons. accumulate on both sides of the PN junction to form a potential difference. When an external circuit is connected, under the action of this voltage, a current will flow through the external circuit to produce a certain output power. The essence of this process is the process of converting photon energy into electrical energy.
Installationphotovoltaic energy production on rural roofs is very reliable.
Rooftop solar photovoltaic power generation is already a relatively mature technology, which involves installing solar panels on the top of the building, combining the existing building with the photovoltaic system, and integrating the electricity produced in the national network. .
1. Efficiently use existing buildings without taking up additional land resources. It can generate electricity on site and use it nearby, reducing transmission losses.
2. Photovoltaic power generation occurs during the peak electricity consumption period during the day, which can effectively alleviate peak power demand.
3. There is no noise or pollution and the photovoltaic modules are installed on top of the building, which is beneficial for cooling the building in summer.
4. Incomes are stable and the economic benefits are clear. A one-time investment will result in profits the next day.