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Energy saving and environmentally friendly solar water heater is also safe, and is included into the home appliance products, spread to many families to go. But many of my friends have encountered the problems of , and today I come to tell you about.
How to identify the pros and cons of solar water heater product quality?
Under normal circumstances, through the instrument tested to see whether it meets national standards. If the only experience to identify, will have to pay attention to the following aspects:
First, the purchase must be understood in the water heater, solar collector, pipe joints and plate core is carried out before leaving the factory pressure test and leak check, but also on the type of product, materials, and the requirements of the consumers themselves into account, If economic conditions to select according to their own products at different prices, according to family size to select a different volume of water heaters, frost issues to be considered the north, high-rise hotels must consider whether the all-weather use of the product.
Second, to understand the technical performance, mainly the average daily efficiency and average heat loss coefficient. Currently, many people have a misconception that the higher the temperature inside the tank the better the thermal performance. In fact the water temperature can not explain the level of product quality. Water temperature and sunlight intensity, duration of sunshine, water capacity, lighting area, the initial temperature of the water have a relationship, the most scientific way is to look at the thermal efficiency and heat loss coefficient. Currently the average daily hot water pipe vacuum tube should be greater than 40% efficiency, heat loss coefficient is less than 2 ? / square meter.
Third, to understand the materials used in the product. Manufacturers are now regular use 0.6 mm thick liner sheet to do, and some small factories in order to save costs, more choice of 0.3 to 0.4 mm sheet metal, tin solder is made by man, greatly reduced product life. As the water tank placed outdoors year round, the insulation effect depends entirely on the type of insulation material and thickness and density, high-quality products are mostly used polyurethane insulation material, the thickness of 4 to 5 centimeters, the Northeast cold region required 6 cm thickness. Most manufacturers use regular embossing aluminum oxide, aluminum oxide board, color board to do the import tank shell, and many consumers are not familiar with the use of small factories and imported color plate aluminum plate performance, mostly ordinary stainless steel materials, quality is difficult to guarantee.
Under normal circumstances, a person bathing water to be 20 ~ 40kg, 6.5kg each tube can be heated in water, according to family size and can be used to estimate the required bathing water heater capacity.
In the absence of water areas to the use of solar water heaters, and can use the pump in Sheung Shui, an additional an additional auxiliary tanks and solar water heater the same height, to store cold water, so that against the cold water bath.
May be due to vent blockage, when the water into or discharged, or within discharged air is not immediately replenished, the formation of internal and external pressure difference, resulting in breaking up or deflated tank.
The size of the tank and vacuum tube count of the relationship?
General design is based on bathing water heater hot water temperature required for the design, general design of solar water heater temperature range is 400C ~ 900C, water heating each tube approximately 6.5kg.
Vacuum , Sheung Shui, what issues should pay attention to?
As the vacuum in the air drying, the tube can reach temperatures of about 2500C, so water in the tank or the first time before sunrise or in the Sheung Shui to be a half hour after sunset.
How to determine the pros and cons of solar water heater?
Solar thermal solar water heater is a kind of part of the entire water heater including collector, heat storage part, stand part. Determine the merits of the most important part of the collector is the collector component based on the absorption rate and the divergence rate, which is the relevant materials and production process.
Thermal energy storage device is the water heater\\ s warehouse, its quality assurance are two: First, do not leak, and second heat. Liner is the main welding, weld strength and quality of interior materials are corrosion is the key to the decision other insulation materials, insulation, cold regions must use thicker insulation.
Support for the host part of the bracket operation to ensure the correct position collector components, it needs to have the same host of other components of life, which requires good strength and corrosion resistance, determine its merits, it can be visually material, thickness, surface treatment.