Heat pipe solar water heater system
Heat pipe solar water heater (thermal) collector is the most efficient system. Efficiency is thousand times of other collecting panel. Heat can be transferred from down to up in few second.
The Company’s heat pipe is in the evacuated tube, which doesn’t have water inside, so we don’t have problem of lime-scale in the tube. Sunlight passing through an outer glass tube heats the absorber tube contained within it. In the evacuated chamber, three target sputtering selective coating are installed above the innner tubes.
Three target sputtering plate (selective coating) and vacuum insulation are the most important parts of an advanced thermal system. A selective coating has high absorption ( low reflection) from solar radiation and low emissivity.
Heat pipe can be used in many situations, for example, solar water heater, heat exchanger and swimming pool. YOUR HOME TECH., LTD is a professional heat pipe solar water heater manufacturer and supplier. We introduced this technology and produced heat pipe in Taiwan.
Thermal collectors are separated two major types;
(1) Passive thermal system
Thermal collector combine with storage tank. Heat pipe generates hot water directly.
Passive solar water heater system doesn’t need any other extra electric device.
Application: Flat roof and garden.
(2) Active thermal system
Active solar water heater use electric pumps, valves and controller to circulate water or other heat-transfer fluids such as anti-freeze through the collectors. It is usually easier to retrofit than passive thermal system. Active solar water heater system installed on the roof of builds and put storage tank in the garage or basement. They don’t need to be installed above or close to the collectors.
Application: residential, condo, resort, apartment, hotel, motel, tour van, industries, etc.

Characteristics
1.Nano-coating
    Our heat pipe uses the Nano-coating technology, which reduces the generation of contact tension and lime-scale.
2.Maintain a high temperate of water
    The storage tank with high-density foam can keep a high temperature of water.
3.Save energy
    The solar water heater uses solar energy to supply hot water every day, which saves the energy from electricity, gas and so on.
4.Qualification
    Our products are certified by Bureau of Energy. Ministry of Economic Affairs.
    And we have gained certification of ISO 9001 & ISO 2000.
5.No limescale
    There is no limescale generated inside of the pipe.
6.Extends life
    The stainless steel storage tank extends the life of water heater.

TECHNICAL PARAMETER OF EVACUATED TUBE

Item	φ47×1500	φ58×1700
Outer Diameter of tube (mm)	φ47±0.1	φ58±0.1
Inner Diameter of tube (mm)	φ32±0.15	φ43±0.15
Length of tube (mm)	1500±0.5%	1700±0.5%
Vacuum	≧5×10-3 Pa	≧5×10-3 Pa
Glass Thickness (mm)	1.6±0.2	1.6±0.2
Selective coating	AL/AL-ALN；Cu/Ss-ALN	AL/AL-ALN；Cu/Ss-ALN
Thermal Expansion	3.3×10-6	3.3×10-6
Absorptance	≧0.92	≧0.92
Emittance	≦0.08	≦0.08
Stagnation Temperature	≧200℃	≧200℃
Material of tube	High Boron Silicon Glass 3.3	High Boron Silicon Glass 3.3
Weight (KG)	1.72	2.4
Hailstone Resistance	30 mm	30 mm
Absorptive Area	0.055 ㎡	0.077 ㎡
Heat Loss	＜0.8 W	＜0.8 W

CIRCULATION DRAFT