Rainy and foggy weather, low radiation or short lighting duration. There is an obstruction above the water heater, or there is a lot of smoke and dust in the local air, and there is dust on the surface of the heat collecting tube. The water supply valve is damaged or improperly closed.
:Solar water heater is a device that uses sunlight to heat water. Solar water heaters are divided into vacuum tube solar water heaters and flat panel solar water heaters accounting for 95% of the domestic market share. Household vacuum tube solar water heaters are composed of heat collecting tubes, water storage tanks, brackets and other related parts. The conversion of solar energy into thermal energy mainly relies on vacuum heat collector tubes. Pouring cold water to produce microcirculation in the water to reach the levelhot water required.
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 the heat of solar energy from both layers of glass. The glasses are vacuum insulated, heat cannot be transferred to the outside and can only be transferred to the water in the glass tube, heating the water in the glass tube. The heated water becomes lighter and enters the insulated water storage bucket along the heating surface. of the glass tube. The edge of the water at relatively low temperature in the bucket. The backlight surface of the glass tube penetrates the glass tube to replenish it, so that the purpose of hot water is achieved through continuous circulation.
1. If the solar water heater is not used for a long time, the water heating speed is related to the intensity of the sunat that time and the quality of heat absorption. tube. If the sun is very strong at that time, the heat-absorbing tube The light-heat conversion rate is high, and the water temperature can be very high in one or two days if the sun is not present . good or if the light-heat conversion rate of the heat absorbing tube is low, the time required for basking in hot water will be prolonged.
2. If there is no hot water for several days, the heat absorption rate of the heat absorber tube may have decreased or the vacuum of the heat absorber tube may have been damaged, and the photothermal conversion rate is too low.