How long is the solar water heater used?
Four, installation and service. The solar water heater installation requirements are very high, professional installation is the winter with the foundation and guarantee. Some brand-name enterprises often around recruit migrant workers formed a guerrilla, also in a hurry without formal training posts, design, these people did not understand the water heater body fixed line professional knowledge, do not understand the product later maintenance, meet the eye everywhere caused problems directly affect the solar water heater "standard of life". For example, for a fixed water heater installation bracket accessories brand by wire, strong, resistant to corrosion, but some small manufacturers are using fixed wire, resulting in some areas a heavy rain, hail and other severe weather, there are a lot of solar water heater crashing to the ground.
Two, insulation layer. The solar water heater production during the day of hot water stored in the storage tank, if the insulation heat preservation performance is good, overnight, rainy days can not be used or not used. That cause the insulation layer of the water heater insulation mainly due to the poor performance of the solar water heater, the insulation layer determines the how many hot water temperature and hot water level. The layer of imported raw materials, such as polyurethane insulation good, low thermal conductivity, high temperature resistance; automatic temperature high pressure foaming process and quantitative heat insulation, the high-temperature aging treatment, thermal insulation performance is high and stable and lasting. While some inferior materials with high thermal conductivity, no foaming uniform, night temperature can drop to ten degrees, encountered rainy days. There's no hot black enterprise, in order to reduce the cost, even the benzene board made, a few months after the insulation effect of straight down, after one or two years of basic. Three. Temperature, liner. At present, most of the solar water heater manufacturers said water tank is stainless steel. Stainless steel is the same, but chromium and nickel in stainless steel is not the same. Good solar water heater uses stainless steel high chromium nickel, ensure the bladder durable, strong corrosion resistance; inferior liner the use of low grade stainless steel, basic does not contain nickel, corrosion resistance performance is poor, life is short.
The manufacturer said solar water heater service life of 15 years or so, in this regard, consumers should have a clear understanding of the cause of the solar water heater. "Short-lived", a vacuum tube. The vacuum tube is the core component of solar water heater, solar water heater is the "heart". It directly determines the quality of the performance of the whole water heater. Vacuum tubes performance affected by coating technology and cleaning, coating, vacuum, sealing and other processes. However, some ultra low-cost solar water heater using vacuum tube has the following defects: low vacuum, only quality products of 1/100; a large number of impurities and residual water vapor pipe, an encounter high temperature becomes gas, vacuum reduction; low vacuum film stability of two or three years, intimal layer aging, loss, resulting in thermal performance decays rapidly, unable to absorb sufficient heat.
