Will solar water be damaged if drained?

Do not drain the water. When the solar water heater is not used for a long time in summer, it is best to fill it with water. 1. If the solar water heater is not used for a long time, cover the collector tube with something opaque. It can prevent water from vaporizing and evaporating completely, exposing the collector tube to sunlight, thereby damaging the heat-absorbing coating by excessive temperature. It can also prevent falling objects or hail from damaging the collector tube. 2. If solar energy is not used for a long time in winter, it should also be filled with water. After the temperature rises, the insulation barrel must be filled to prevent freezing and cracking.

Draining solar water in winter is harmful to solar energy for the following reasons:

1. Although the temperature is low in winter, the sun's irradiation is alsovery high. When the sun is bright, heat absorption from solar energy is related to irradiation. The higher the irradiation, the greater the heat gain from solar energy.

2. If the solar water heater water is drained, the solar heat absorber will absorb solar energy as usual when solar radiation is good, then convert the solar energy into thermal energy and store it. .

3. Since the water tank insulation performance of solar water heaters is generally very good, the heat absorbed by the heat absorber will be stored in the water tank and vacuum tube. If there is no water in the solar water heater and no one is using solar energy, the hot air in the water tank is actually equivalent to stagnant gas in an enclosed space. In this way, the temperature of the hot air in the solar will become higher and higher and the pressure indullness borne by the water tank will increase. This situation will cause:

(1) The insulation layer will be burned and carbonized, thereby losing the insulation function, resulting in the destruction of the performance of the entire solar water heater

(2) The water tank will swell and deform, burst seriously, damaging the whole machine.

If the solar water heater is not used in winter, the water must be drained.

In winter, if the energy of the water heater is not sufficient for the sun to set, you must drain the water from the solar panel, close the valve, and remove the cap to keep the outside. water pipes against freezing. Prevents water pipes from freezing due to low temperatures and lack of circulation.

If the solar water heater is full of water in winter and the temperature is too low, the water in the water pipes will easily freeze and freeze the water pipes. In severe cases, heatingsolar e-water will freeze. and crack.

On sunny days, the solar water heater can be used normally; When the temperature is below -5℃, it is best to use water heater water in small quantities and several times a day.

Detailed information:

You must empty the water when not in use not, otherwise it will freeze and crack.

Anti-freeze measures:

1. If the temperature is too low or the solar water heater is not used for a long time, the water valve of the water heater should be closed, drain the water heater and the upper and lower water pipes to prevent frost cracks in water pipes and other pipes. They are caused by lower temperatures and a lack of water circulation.

2. When the temperature in winter continues to be below 0℃, antifreeze devices such as electric heating tapeue must be turned on for protection against preheating. Especially in cold northern regions, when the temperature is always below zero, the heater and antifreeze device will be activated.

3. Use solar heat in winterWhen using a water heater, when to add water should be determined based on the cold weather.

4. If there is no solar water heater installed, accompanied by tropical water, etc., if the weather is cold, you can open the hot water nozzle or faucet, place a basin underneath, relax hot water. water outlet valve and let it drip slowly, in order to maintain the flow of water in the pipes and prevent freezing of the pipes.

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