I opened my own solar manufacturing plant a few years ago and then sold it. 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 buyter? This depends on the strength of investments and production capacity requirements. The production capacity of 40,000 yuan solar generation equipment will be very small, 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. .
Yes
The current battery panel voltage level is 20+W usedn
Buy 2 units and get battery cells. Please have 2. 3 battery panels familiar with the technology. The basic configuration of 3 sellers is formed
But it should be considered that the current production of battery panels is not good, especially for small manufacturers
If it is no channels, the purchase price of battery cells will be high and it is easy to make a mistake, and the production cost is high!
The current battery panel market is essentially a price war.