Description

Flat roof type (*3°/*0°) pitched roof type (*5°)
Unpressurized Solar Water Heater
1 Brief introduction:
The length of vacuum tubes is fixed, say, 2.1m. It is unpressurized solar water heater which can collect more sun radiation and provide larger volume of hot water even in winter. It is specially made for severely cold
regions, from design to manufacturing, from ultra-low-emission vacuum tubes, thermal nanometer sensor,coupling insulating part, to thicker PU insulation for water tanks, pipelines, and stronger hot-galvanized supports for snowstorm resistance and once was the designated product for Chinese South Pole ScientificExpedition Team in the South Pole.
2 Working principle:
The vacuum tube absorbs the energy of the solar radiation, and transfers it to the water in the vacuum tube.Obtaining the energy, the temperature of water is increased, and the density is decreased. So the hot water will
rise, and the cold water in the water tank will supplement the vacuum tube. And this makes the water temperature inside the tank increase continuously.
3 Components:
The system consists of water tank, vacuum tubes, and supports. Other parts, such as insulated pipelines, safe cable, SED auxiliary heating system, intelligent controller, etc will be chosen at will.
4 Features:
1) Vacuum tube: The tubes are all 2.1m extra long high temperature ones with special effect. “*-hi” tubes (high-temperature and high-cold resistance, high efficiency) are coated with the patented interferential coating technology, achieving the higher absorptance of *6% and lower emissivity of 4%. The vacuum degree is as low as 5×***4Pa, **0 times lower than that of the common ones.
2) Insulation: The insulation layer adopts constant temperature, high pressure and quantitative foaming. After high temperature slaking processing, foaming is even and compact, and has higher closed pore rate and better  insulation effect.
3) The inner tank adopts SUS**4 stainless plate with high chromium and high nickel content, which has a
strong anti-corrosion function. It adopts full-automatic argon-arc welding technics, which extends the longer lifespan.
4) The supports are made of color galvanized steel plate, and pass through *4 kinds of surface anti-corrosion processing, such as degrease, parkerising, electrostatic painting, and high temperature curing and so on. It makes the supports strong and corrosion-resistant; the lifespan can reach more than *0 years. The design of suupports is comprehensive industrial modeling, which is concise, artistic and stable.
5) The entire“SED”auxiliary heating system has passed the China Compulsory Certificate. It adopts protectionof electric leakage, and two steps to protect from overheat(stop by temperature controller at *0°C, and bybreaker at **0°C). The electric booster, made of Incoloy **0, is excellent in anti-corrosion and dry burning.
6) Impulse sensor: The pole type impulse sensor (patent number: ***********4.5 ), made of SUS**6L totallyand adopted the principle of impulse scanning of the water level, can sense the temperature and water levelaccurately, preventing the problem of scaling and water leakage caused by traditional rubber sensors.Intelligent systems can be chosen to realize automatic control of hot water consumption.