Solar energy does not radiate.
Solar panels do not produce radiation. Solar panels generate electricity from the sun and produce no radiation. Radiation generally refers to electromagnetic radiation, such as x-rays, ultraviolet rays, and visible light. These radiations are produced by electrons and electromagnetic waves. However, solar panels do not produce this radiation because they generate electricity from the sun.
The radiation produced by solar panels is so low that it is almost negligible. In fact, the radiation produced by solar panels is much lower than that produced by ordinary devices. Because solar panels only need a solar energy source to produce electricity, while other devices consume a large amount of energy to produce electricity.electricity. The radiation from solar panels is therefore negligible and has no effect on us.
Notes on the use of solar energy
When purchasing solar equipment, you should pay attention to the quality and to the power of the equipment. Quality refers to aspects such as equipment performance, stability, safety and durability. Purchasing high-quality equipment can ensure that the equipment has a long service life, stable operation, safety and reliability. Power refers to the power-producing capacity of the device. Generally speaking, the higher the power of the solar panel, the higher the energy production.
Therefore, when purchasing solar panels, you should choose moderate power equipment to meet the actual electricity demand. Additionally, when purchasing solar equipment, you must equalConsider carefully where and how the equipment will be installed. Solar panels should be installed in a sunny location to avoid occlusions and shadows. The installation method should also take into account the stability and safety of the equipment to avoid damage or accidents.
What should you pay attention to when purchasing a solar water heater?
There are many types of household solar water heaters depending on the type of solar collector. can be divided into vacuum tube type and flat plate type according to the structure, it can be divided into one-piece type and divided according to the production process, it can be divided into pressure type and non-pressure type; -bearing type. At present, most of the most common household solar water heaters sold on the market are non-pressure vacuum tube household solar water heaters. General:
A look at the vacuum tubee: The vacuum tube is the most important component of the solar water heater. Currently, there are thick tubes (usually 58mm in diameter) and thin tubes (usually 47mm in diameter). ). Relatively speaking, thick tubes have a large heat collection area, fast heat collection and high water temperature. Therefore, when purchasing, priority should be given to solar water heaters using thick tubes.
The materials for manufacturing vacuum tubes mainly include single target machines and three target machines. Three-target machines are of higher quality and consumers can identify them by their appearance when purchasing. The vacuum tube of the single target machine is gray in color, with color difference, and the inner wall of the vacuum tube is light black, while the vacuum tube of the three target machine has a bluish appearance, no color differenceand the inner wall is dark red.
Second weight: The water tank is very important for the water heater. Generally, heavy water tanks are of good quality. The weight is mainly determined by the use of the water tank shell. It is determined by the material and the foam layer between the water tank shell and the water tank liner.
Typically, the shell of a relatively poor water tank is made of shiny stainless steel (currently many large cities have banned the use of water heaters made of this material due to the presence of light pollution), and the shell is not thick and light enough.
The foam layer is directly related to the insulation effect of the water heater, so it is also very critical for the use of the water heater. Generally, the foam layer of famous brand products is foamed by machine under high pressure, sothat there is no air between the outer shell and the inner tank, and that the foam layer is dense and thick. Therefore, the entire water tank is often heavy to weigh.
Three comments on the bracket: Generally, the brackets of better quality solar water heaters are made of aluminum alloy brackets, which are thick and strong.
●Note: The quality of the water heater coating cannot be identified by its appearance. In this case, consumers can judge by reading the instructions. Generally, water heaters produced by usual manufacturers will not be vague about the inner tank material technology. Therefore, consumers should read the instructions carefully when purchasing.
What should you pay attention to when purchasing air water heaters or solar water heaters? I saw a Macro air-energy water heater in my home
1. The after servicees-sales must be good. Regardless of the type of solar power, if there is no good after-sales service, you will have a lot of problems later. 2. Price. Don't buy a machine that is too expensive. For a family of 5, this can be done for less than 3,000. 3. Quality. The material of the support and the thickness of the material; the insulation density of the box must be good. When filled with water, the temperature drop should not exceed 6 degrees each night; the vacuum tube should be 6 feet long. It's better to choose Zijin tube now.
What should you pay attention to when purchasing a solar water heater?
Solar water heaters have a large sales volume in the market and Many consumers have switched from gas water heaters to gas. Water heater. Nowadays, many consumers will ask this question when purchasing air water heaters. What problems should you pay attention to when purchasingt solar energy? What precautions should be taken for solar water heaters?
The first point: The vacuum tube is a device that absorbs solar energy, and its quality is related to its lifespan. When purchasing a solar water heater, pay attention to whether the vacuum tube is leaking. If the end of the tube is bleached or blistered, do not buy it. Using the tube will cause the tube to heat unevenly, which will directly shorten it. its lifespan. Vacuum tubes should have a smooth appearance.
Second point: The best inner tank for solar water heater is made of stainless steel and its thickness should be at least 0.4 mm. Good quality products usually use folding towers to connect the under-arc plugs to make them strong, reliable, rust-free and extend their service life.
The third point: the raw materials of the insulating layer are polyurethane and polystyrene. Among them, theThe first is a self-disposable insulating layer, or the second is a prefabricated insulating layer. Therefore, the latter has a longer lifespan than the former and its thermal insulation performance is also very exceptional. The difference between the two is that the colors are different. When purchasing the product, you can check it from the installation pipe of the water tank. The color of the former is light**, while the latter is white.
Fourth point: There are three layers of rubber rings in the solar water heater, which are the vacuum tube supporting ring, the rubber ring connecting the outside of the tank of water to the vacuum tube and a layer of sealing ring for the connection between the inner tank and the vacuum tube. Among them, the seal ring plays the most important and important role, it can be waterproof. The best material is pure silicon ring, which has a longlifetime. Its shape is milky white and translucent and is pleasant to the touch. The quality of rubber rings and hard plastic rings is poor, which affects the service life of solar water heaters. I hope to adopt it.
1. Pay attention to thermal performance indicators
The higher the "average daily efficiency", the better and the lower the "average heat loss". coefficient", the better. If you need to set up an electric heater, you should choose a product with an electrical safety design.
Be careful when purchasing other accessories related devices, such as automatic water supply devices, water temperature and level indicators, solenoid valves, etc., and clearly inquire about the service life and warranty period. Some functions may appear. advanced, but they have too many components, the reliability is not high.t problems may arise over time.
2. The key part is the vacuum tube
The key part of the domestic solar water heater is the vacuum tube When purchasing, you should carefully observe the coating on the glass tube. inside the vacuum tube. A good quality coating is uniform in color, has no scratches, peeling or peeling on the film, and there are no pebbles or knots on the glass. The brackets supporting the inner glass tube are placed correctly and are not loose.
At the same time, it should also be noted that the center distance between the two vacuum tubes should be approximately 70 mm. Currently, there are different forms of reflectors for domestic solar water heaters on the market. When purchasing, you should check whether the reflector design can make full use of the heat-absorbing surface of the vacuum tube and whether vacuum is present. The tube can receive a maximum of lumiere.
3. The design of the bracket should be reasonable
For solar water heaters, the design of the bracket should be reasonable and should have sufficient strength and rigidity. In some areas subject to strong daily winds, especially coastal areas, you should also pay attention to whether the product is designed with wind resistance.
4. Pay attention to the brand
Buy products with original standard accessories and pipelines as much as possible, and be careful when purchasing "semi-finished" solar water heaters. Try your best to choose brand products with good reputation, guaranteed product quality and after-sales service, and do not buy "three no's" products made by small workshops.
Detailed information
There are four major safety risks in solar water heaters
1. Lack of standards mandatory installation and fixing, solar water heaters fall and injure people.
Although the “Technical Conditions for Domestic Solar Water Heating Systems” does not have clear requirements for specific wind resistance levels, GB/T19141 only states that “supports of the domestic solar water heating system must have sufficient strength, rigidity and toughness. certain corrosion resistance."
However, there are no clear requirements for the specific selection of materials and surface anti-corrosion treatment of the support, and there is a lack of mandatory standards installation and fixing
2. Mandatory standards for the material and installation of electric heating tapesMissed, the solar water heater leaked and caught fire. due to the lack of mandatory standards for the material of electric heating tapesques, the quality of electric heating ribbons does not comply with standards. At the same time, due to the lack of installation and fixing standards for electric heating tapes, the wiring of electric heating tapes was improperly installed during installation, and fires occurred during use.
3. There is a lack of mandatory standards for materials and installation of electric heating, and leaks from solar water heaters can harm people.
From the perspective of relevant standards for electric heating, there are no regulations on electric heating materials, and there is a lack of material selection specifications. There are no standards regarding the service life of electric heating tubes made from different materials, nor regulations on relevant measures to be taken for electric heating tubes that have exceeded their service life.r safe lifespan.
4. There are no mandatory standards for inner tank material, process, pipe material and installation. Solar water heaters can leak and injure people and damage homes.
Due to the absence of mandatory standards for the selection of solar water heater pipe materials, the quality of the pipes is not up to par. Some use pipes that are not resistant to high temperatures and are prone to high temperatures. breakage and leakage after long-term use. At the same time, there is a lack of standards for the installation of solar water heater pipelines, resulting in inadequate installation of water supply and drainage pipelines. For example, in the northern regions there are no anti-freeze protection measures in winter and pipes are prone. to freeze the cracksres and leaks.
People's Daily Online - The success rate of domestic solar water heaters is 86%. You should pay attention to three aspects when purchasing.
People's Daily Online - National standards for four major safety risks of solar water heaters should be eliminated as soon as possible< /p>