Solar water heater is really easy to bad
Insulation layer.Solar water heaters in the daytime production of hot water storage tank, if the insulation layer of the thermal insulation performance is not good, overnight, rainy days can not be used, or bad. The main reason for the poor performance of the solar water heater is the insulation layer of the water heater, the thermal insulation layer determines the hot water temperature and the amount of hot water. Good insulation layer using imported raw materials, such as polyurethane, low thermal conductivity, high temperature resistance; heat preservation process using automatic constant temperature high pressure quantitative foaming, and high temperature curing, high thermal stability and durability. And some poor data thermal conductivity is high, the foam is not uniform, the night temperature can drop more than 10 degrees, there is no hot water in rainy days. There are black hearted enterprises, in order to reduce costs, even the use of homemade benzene board, a few months after the heat preservation effect of a straight line, one or two years after the basic insulation.
Vacuum tube.Vacuum tube is the core component of solar water heater, but also the heart of the solar water heater. The performance of the vacuum tube is affected by the coating technology, such as cleaning, coating, vacuum pumping, sealing and so on. But some super low vacuum tube using the solar water heater has the following defects: low vacuum, only quality products 1/100 tube residual impurities and water vapor, a high temperatures encountered into gas, vacuum reduction; low vacuum film stability of two or three years, intimal layer aging, fall off, resulting in the thermal performance decays rapidly, unable to absorb enough heat
The solar water heater due to environmental protection and energy saving safety and many other advantages, by the attention of many consumers, but relatively speaking, the solar water heater is not very popular, consumers also worry that the solar water heater is durable, but also on the solar water heater the news is not uncommon, so the solar water heater really so fragile? In fact, manufacturers are said to use solar water heater life of up to 15 years, which, consumers should have a clear understanding. Cause solar water heater short-lived reason mainly in the following areas.
Liner.At present, most of the solar water heater manufacturers said the water tank is stainless steel. Stainless steel, but chromium and nickel in stainless steel are very different. Good solar water heater uses stainless steel high chromium nickel, ensure the liner durable, corrosion resistance is strong; the use of low grade stainless steel liner is inferior, basic does not contain nickel, corrosion resistance performance is poor, short service life.
