Solar water heaters can also be used in colder winters. As long as they are regulated and protected from freezing, they can be used normally, never mind frost damage. However, if management is neglected, freezing can occur.
1. Ordinary water pipes, if not heated by heating tapes but only equipped with cotton insulation pipes, will freeze and crack during the cold winter. In particular, aluminum-plastic pipes, if used in winter, will freeze and leak if the temperature suddenly drops.
Solution:
①Drain the water accumulated in the water line during winter dormancy.
② When used in winter, heating tape can be wrapped; The water outlet of the water tank must be equipped with a drain valve. At night or on extremely cold days, drain the water in time. the water pipe) after havingused water.
2. The vacuum tube is frozen. Vacuum tubes in good condition and used will never freeze. However, if incompetent pipes freeze and crack, they will leak.
①Air hose leaking. The tail of the vacuum tube is bruised or the exhaust is not factory clean, but the inner layer is intact and not leaking, so it is not easy to find. This type of pipe loses its thermal insulation effect. Because there is no sun at night, the microcirculation inside the pipe stops and the water temperature at the bottom is low (even if the water temperature in the box is too high to freeze), the temperature drops very quickly when the temperature is extremely low at night, and the middle and lower parts of the leaking pipe will drop to the freezing point, the vacuum tube inflates.
There are two ways to find out. The first is to touch the outer wall of the tube under a strong light atnoon on a sunny day. If the tube is cold, it is a good tube; hot, it's a bad tube. Replace it. Second, check on a frosty or snowy day that there is no frost on the leaking insufficiency pipe and that there are no or fewer snowflakes falling on it (the heat is dissipated outwards). This type of pipe is not damaged by freezing, but also experiences significant heat loss, which seriously affects the increase in water temperature. It must be replaced as quickly as possible.
②The water tank contains little or no water. If there is no water in the water tank but there is water in the vacuum tube, the temperature drops suddenly or the temperature drops again after several days of low temperature. As there is less water in the water tank, the heat capacity is small, the air capacity is large, and the heat loss by convection is largee. The heat loss to the water in the vacuum tube is near the freezing point and the vacuum tube freezes. because of the ice in the tube!
Solution: Fill the water tank after each use. The box is filled with water and has a high heat capacity. Since there is no air convection, heat loss in the box is relatively reduced and the pipes do not freeze easily.
After two sunny days when the tank is full of water, the water temperature can reach 80 to 99 degrees (outdoor temperature is minus 10 degrees or lower). Even if it is cloudy for four or five days in a row without any heating, the water temperature can still reach over 30 degrees.
Most of them are now equipped with electric heating. When the temperature inside the box is close to the critical low temperature, electric power is supplied for heating and anTigel.
3. Due to lack of cleaning, the lower part of the vacuum tube is densely accumulated with scale, which absorbs heat slowly and dissipates it quickly. It is easy to freeze and freeze when encountering low temperatures.
Solution: Whenever you suspect scale buildup, clean it in time beforehand.
You also need to pay attention to the method when using solar water heaters. Use them in the right way to ensure the normal operation of the water heater and extend the life of the water heater.
Solar water heaters from similar brands generally do not freeze. Since solar water tanks are insulated, they will not freeze. If it is frozen, the solar pipes may be frozen.
If you want branded solar power, the water heater has double layer insurance when installed. First, install an “antigel” on the aluminum-plastic pipe.The second is to wrap “polyethylene insulation pipe” outside the aluminum-plastic pipe. This way it will not freeze in winter and can still be used. Irresponsible solar manufacturers will not install these items. the temperature drops below freezing, water heaters like these will not be able to be used and may even freeze