Solar panels can convert thermal energy directly into electricity.
Solar power generation methods There are two solar power generation methods: one is the light-heat-electricity conversion method and the other is the light-direct conversion method. electricity.
1. The light-heat-electricity conversion method uses thermal energy generated by solar radiation to produce electricity. Generally, a solar collector converts the absorbed thermal energy into steam as the working fluid, and then drives a working fluid. steam turbine to produce electricity. The first process is a process of converting light into heat; the second process is a process of converting heat into electricity.
2. The direct light-to-electricity conversion method uses the photoelectric effect to directly convert solar radiation energyin electrical energy. The basic device for converting light into electricity is the solar cell.
Monocrystalline silicon solar panels:
The photoelectric conversion efficiency of monocrystalline silicon solar panels is about 15%, with the highest reaching 24%. This is the highest photoelectric conversion efficiency among all types. of solar panels. The most effective, but the production cost is so high that it cannot be widely and commonly used in large quantities.
Since monocrystalline silicon is usually encapsulated in tempered glass and waterproof resin, it is strong and durable, with a lifespan of typically up to 15 years and up to 25 years.
Reference for the above content: Baidu Encyclopedia - Solar Panels
I myself opened a solar manufacturing factory a few years ago years and I sold it morelate. There is experience for your reference. If you only want to make a vacuum tube solar water heater, the brackets and vacuum tubes of the three main accessories can be purchased commercially, and there is no need to make your own equipment. Just make the water tank. Water tank equipment mainly includes longitudinal seam welding machines, circumferential seam welding machines, shears, rounders, folders, presses, foam machines, punching machines, etc. There are many brands of solar equipment on the market today, some are very expensive and others very cheap. In fact, both can produce products, the difference lies in production capacity and precision. Which one is better to buy? This depends on the strength of investments and production capacity requirements. ThereProduction capacity of 40,000 yuan solar generation equipment will be very low, but the products produced will still be qualified. If a foaming machine is not used for foaming, the thermal insulation effect produced by artificial foaming is relatively weak. If the operation is skillful, the thermal insulation performance can also meet the standard.
If you also need to make engineering headers, you will also need a bending machine.
Based on my experience and understanding of the industry, I suggest that you do not make a simple evacuated tube solar water heater, but rather a new flat panel solar collector with high efficiency with high technological content. .