b. Heat Pipe Solar Collector
Structure and Principle: The heat pipe is hollow with the space inside evacuated, much the same as the solar tube.
Freeze Protection: Because the heat pipe is located within the evacuated glass tube, brief overnight temperatures as low as -20oC (14oF) will not cause the heat pipe to freeze.
⊙ High heat conduction coefficient:is 2000-5000 times of matal materials.
⊙ High quantity of heat conduction:is 1000times od metal materials.
⊙ Low temperature difference:less than 4℃ difference in 2 meter long pipe.

Features:
* Reliable, efficient, twin-glass solar tubes heat pipe
* Copper heat pipes for rapid heat transfer
　- Low maintenance effort
　- Easy installation of single or multiple units
* Corrosion resistant silver brazed copper header

NOTE：Absorber area is the part of the collector that actively absorbs the light rays. For solar tubes this is defined as the cross-sectional area of the inner tube (selective coated) measured using the outside diameter. (Eg. 0.047 x 1.72m = 0.08m2)
c.U Pipe Solar Collector
Liquid (pure water or glycol ) in the U pipe heats up, and the U pipe conducts thermal energy to the water inside the storage tank through internal copper coils.
As the water temperature can be adjusted using an automatic controller, user can get hot water all day long.

1. Outer glass 2. Vacuum 3. Selective coating 4,Aluminum heat transfer fin 5. U pipe(Hot terminal) 6.u pipe(cold terminal)

(2).Solar Waer Heater
a. Thermosiphon Solar System
Thermosiphon systems move household water or a heat-transfer fluid through the system without pumps. The systems have the advantage that electricity outage and electric pump breakdown are not issues. This makes generally more reliable, easier to maintain, and possibly longer lasting than active systems. Thermosiphon systems are often less expensive than active systems, but are also generally less efficient due to slower water flow rates through the system

Feature: Stable, reliable, easy installation and scientific structure
Inner tank: SUS3042B Imported SUS3042B Food Grade Stainless Steel led by argon arc, superior water quality and drinkable
Outer shell: SUS3042B Stainless Steel, Imported color steel and aluminum-zinc plated steel, coated with hi-tech corrosion-resistant layer
Heat insulation layer: 50-60mm import polyurethane integral foaming, superior heat preservation

b. Closed-Loop Thermosiphon System
Thermosiphon solar collectors provides mains pressure pre-heating via a high efficiency copper coil heat exchanger located within the solar collector tank. The way in which the Mains Pressure solar collector heats water is the same as the Non pressure solar collector. Rather than using the water in the tank directly, as the Non pressure does, the type uses a 45 ～ 60m copper coil

Heat exchanger inside the tank which provides more than 1.5m 2 of heat transfer area. When wate Heat exchanger inside the tank which provides more than 1.5m 2 of heat transfer area. When water flows though the coil it absorbs heat from the water inside the solar collector tank. The solar collector tank is therefore a thermal store. For more details,please contact us with solarsking@hotmail.com

In this active, closed-loop system, incoming potable water is routed to the solar storage tank, but never into the collectors. A water and antifreeze mixture circulates from the collectors through a coil of pipe in the solar tank, and then is pumped back through the collectors. The potable water is warmed by heat transfer through contact with the pipe. In most climates, a 50/50 propylene glycol and water mixture will keep collectors from freezing. These systems require an expansion tank and a few other auxiliary components for filling, venting, and maintaining the system. A definite advantage to antifreeze systems is that the collectors can be mounted anywhere. These systems are pretty much the only choice in very cold climates.

For more information about Solar Water Heater design and installation,please contact with
solarsking@hotmail.com