The position of the solar water discharge valve is different for each brand, so you need to check the specific position of the valve according to the instruction manual of the solar water heater.
Solar water heaters certainly have advantages, but they also have many disadvantages. Installing solar water heaters is very complicated. To better absorb energy, water heaters are generally installed on the roof of the building. Nowadays, most people live in high-rise buildings, so installing solar water heaters is not practical and also does not allow the water heater to absorb sunlight.
The solar water heater will be equipped with a pipe which will be used to transport the hot water. The solar water heater is installed on the roof of the building. There is a long distance between the roof of the building and the residents. Therefore, when you want to take a douche, you don't have hot water as soon as you turn around. on the tap. Instead, you have to leave it for a while to let the cold water in the pipe become hot, which is a waste of water.
Detailed information:
The working principle of solar water heaters is presented as follows:
Sunlight passes through the first glass layer of the heat-absorbing tube and shines on the black heat-absorbing layer of the second glass layer. , absorbing heat from solar energy. There is vacuum insulation between the two layers of glass, so heat transfer will be greatly reduced (radiant heat transfer still exists, but there is no thermal conduction or thermal convection). can only be transferred to the water inside the glass tube, causing the water inside the glass tube to be heatedglass.
The heated water will flow upward along the heating surface of the glass tube and enter the insulated water storage bucket. The relatively low temperature water in the bucket will enter the glass tube along the backlit surface of the glass. tube for replenishment. In this continuous cycle, heat conservation. The water in the water storage barrel is continuously heated to achieve the hot water target.
Ifeng.com - More than a thousand solar water heaters are installed in the community for free as decoration
Baidu Encyclopedia - Solar water heaters