1. The investment in installing solar panels is relatively large. For some families, the cost of installation may be too high, causing a financial burden.
2. Solar panels are installed directly on the roof if exposed to wind and sun for a long time they may suffer from corrosion problems.
3. After all, solar panels are obtained from solar energy. Only by using solar energy resources can we generate electricity, so they can only be used when the weather is sunny. If it is cloudy or the sun is not particularly bright, electricity consumption will be affected.
4. During installation, holes must be drilled on the roof to penetrate the roof. Unreasonable installation at a later stage will cause roof leakage problems.
What a shame the big onesCould solar panels on the roof of your home cause radiation to your home? 1. The roof has increased its load-bearing capacity;
2. It will be more difficult to waterproof the roof in summer because there is a lot of equipment on it;
Radiation? Adding solar panels to the roof blocks the impact of solar radiation on the house and people, thereby reducing radiation. After all, sunlight is made up of particles emitted by solar nuclear fusion. If it is not protected by the ozone present in the atmosphere and shines directly on the surface like other planets or the Antarctic hollow zone, it will seriously harm humans. This is why animals in the Antarctic cave zone suffer from blindness and skin cancer.
As for electricity, is there radiation? Then you should go back in time, live in a terracotta or wooden house, burn firewoodfor cooking, lighting wax for lighting and turning off all electrical appliances. After all, you think that when there is electricity, there is radiation, but now the wires are embedded in the walls and the house is full of electrical appliances. If electricity is used, the entire building will be radiated. and there is no way to live. Let's go back and read the high school textbooks. Solar panel
Solar panel is a device that absorbs sunlight and converts solar radiation energy directly or indirectly into electrical energy by photoelectric effect or photochemical effect. It is the main material of most solar panels. ", but due to its high production cost, its widespread use still has certain limitations.
Compared with ordinary batteries and recyclable rechargeable batteries, solar cells are more energy-saving green products.ergie and more respectful of the environment.
Chinese name
Solar panel
Foreign name
Solar panel
Main materials
< p>Silicon"Energy
Solar energy
Is it renewable
Renewable
Fast
p > p>Navigation
Material classification Areas of application Principles of energy production Lifespan Production process Test methods Detection and maintenance New development
Structural composition
1) Tempered glass
Its function is to protect the main body of power generation (such as battery cells), and there are requirements for selection of light transmittance 1. Light transmittance should be high (generally above 91%) 2. Ultra-white tempered treatment
p>2) EVA
is used for bonding and fixing tempered glass and power generation body.(such as battery cells), the quality of transparent EVA material directly affects the life of the component EVA exposed to air is prone to aging and yellowing, thereby affecting the light transmission of the component, thereby affecting the power generation quality of. the component. In addition to the quality of the EVA itself, the lamination process of component manufacturers also has a great impact, for example, if the bonding degree of the EVA is not up to standard and the strength of bonding between EVA, tempered glass and tempered glass. The backplane is insufficient, this will cause premature aging of the EVA and affect the service life of the component.
3) Cells
The main function is to produce electricity. The main market for power generation is crystalline silicon solar cells and thin-film solar cells, both of which have their own advantages and disadvantages. . Ground cellsCrystalline silicon areas have relatively low equipment costs, but the consumption and costs of cells are high, but the photoelectric conversion efficiency is also high, which makes them suitable for electricity generation under the light of the outdoor sun. Thin-film solar cells have relatively high equipment costs, but the equipment costs are relatively high. battery consumption and costs are high. The cost is very low, but the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low light effect is very good, and can also generate electricity under ordinary light, such as For example. solar cells on calculators.
4) EVA
works as above, mainly bonding and encapsulating the main body of power generation and the backsheet
Solar panelses
5) Backsheet
Function, sealing, insulation, waterproofing (usually TPT, TPE and other materials are used and must be resistant to aging. Most manufacturers of components have a 25-year warranty. Tempered glass and aluminum alloys are generally no problem. The key is whether the backplate and silicone can meet the requirements. ) Aluminum alloy
Protect the rolled parts and play a certain sealing and supporting role
7) Wiring The casing
protects the whole of the electricity production system and acts as a power transfer station. If a component is shorted, the junction box automatically disconnects the shorted battery string. to prevent the entire system from burning out. The most critical thing in the junction box is the diode selection. Depending on the type of cells in the module, the diodes corresponding are also different
8) Silicone
Sealing function, used to seal the module at the junction of the aluminum alloy frame, components and junction box . Some companies use double-sided tape and foam to replace silica gel. The process is simple, practical, easy to use and the cost is very low.