Anti-freeze methods of solar water heaters in winter include an insulation layer to prevent freezing, installation of electric heating tape, and draining to prevent freezing.
1. Insulation layer to prevent freezing
The water pipes of solar water heaters can be protected from freezing by adding an insulation layer. This method of antifreeze of the insulating layer is the most basic method. Most solar water heater water pipes will be insulated when installed, usually around minus 10°C in winter, they will not freeze or freeze.
2. Install electric heating tape
For some locations with extremely cold winters, a single layer of insulation may not be able to effectively prevent outdoor water pipes from freezing, so you must install a layer of insulation. If necessary, electric heating tape can be added alongof the pipe. Use electric heating and insulation to solve the problem of frozen pipes. And this way it can also ensure that when using hot water, what is released is hot water, ready for use.
3. Drain and Antifreeze
You may not be familiar with antifreeze. In fact, the principle is very simple. This involves draining the water from the outside water line. of the solar water heater after each use. Let it go so that only air remains in the pipe. If there is no water in the pipe, it will naturally not freeze, let alone freeze the pipe. This is used to prevent freezing.
Precautions for using solar energy in winter
1 Try not to use water in continuous rain and snow. low temperature
2. Clear snow from solar vacuum tubes in time
If you encounter snowy weather, the snow on solar vacuum tubes should be cleared in time. the sun. Light irradiation on the vacuum tube affects heat absorption. It must be removed in time, let alone wait for the snow to become thick, freeze and freeze the vacuum tube.
3. Windproof
The northwest wind usually blows in winter, and sometimes the wind is very strong if the solar power is not installed stably and there is no of water in the water tank. , it is very likely that the wind will blow. If it is blown by the wind, if it is tIf located on top of a building, it may be knocked over and cause injury.
If the solar water heater is not used in winter, the water must be drained.
If there is no sun in winter, you can use a water heater. You need to drain the water in the sun, close the valve and remove the interior plugs to keep the water out of the top and top. lower water pipes against freezing. Prevents water pipes from freezing and cracking due to low temperature and insufficient water circulation.
If the solar water heater is filled with water in winter, when the temperature is too low, the water in the pipes will freeze easily, freezing the pipes, and even cracks in the water heater solar energy will be serious. . in the sun On a sunny day, you can use the solar water heater normally; When the temperature is below -5℃, it is better to use the water heater several times a day.
Detailed information:
Maintenance methods of solar water heaters in winter:
1. When the temperature continues to be below 0℃ in winter, it is necessary to turn on antifreeze devices such as electric heating tapes for preheating protection. Especially in cold northern regions, when the temperature is always below zero, it is necessary to always turn on the heater and antifreeze device.
2. When using solar water heaters in winter, the water filling time should be determined based on the degree of cold.
3. If there is no solar water heater installed in tropical areas, etc., if the weather is cold, you can turn on the sprinkler or hot water faucet, place a basin underneath, relax the 'Hot water. outlet valve, and let it descend slowly, in order to maintain the flow of water in the pipesns and avoid frostbite in the pipes.
Pujiang News Network - Pay attention to antifreeze in solar water heaters. It is recommended to drain the water if not used for a long time