Low Pressure Solar Vacuum Tube Water Heater With Special Absorptive Coating
| Vacuum tube | Spec. (mm) | Φ 58/1800mm |
| Tube (pcs) | 18 | |
| Material | Borosilicate glass, magnetron spluttering selective coating | |
| Coating | Cu/SS-ALN(H)/SS-ALN(L)/ALN coating | |
| Water tank | Capacity | 100L for inner water tank |
| Inner tank | Food-grade stainless steel SUS304-2B | |
| Insulation | Imported polyurethane integrated foam-forming 50~60mm | |
| Tank shell | Silver Fluorocarbon (PVDF) plate | |
| Bracket | Spec. (mm) | 1.2 ~ 1.5mm in thickness |
| Material | Hot-dip galvanized steel plate | |
| Accessories | Stainless bolts & nuts, Silicon rubber seal, Dust proof rubber seal, Plastic pipe holder | |
| Optional device | Electrical heater, Intelligent controller / Assistant tank, Anode magnesium bar | |
| Tilt angle | 25° ~ 50° | |
| Water output | 45-95 o C | |
| Hail resistance | Φ 25mm |
|
Description:
Non-pressure vacuum tube solar water heater is an open loop and thermosyphon system. The vacuum tube with special absorptive coating can absorb the sun energy and transfer sun energy to heat energy. Whole system works according to the thermosyphon principle. Water in vacuum tubes is heated and then rises to top of tank. Cold water in tank goes down to the vacuum tube bottom. Water in the system will be heated as circulation keeps going on. This type of solar water heater is one of the most popular systems because of its own advantages of high efficiency,cheap price,simple Installation and free maintenance
The Principle of Thermosyphon:
Because of the larger proportion of hot water than cold water, cold water flows downward and hot water goes upward. The water will be heated continuousl between water tank and vacuum tube. In other wards, hot water always floats on cold water. The hot-water flows to the water tank from the vacuum tubes. Because of the proportion, cold water flows to vacuum tubes from the water tank. The cold water is heated in vacuum tubes.After it becomes hot water, it flows to water tank again. The water circulates constantly between water tank and vacuum tubes; the cold water in water tank will be hotter and hotter. Finally, all cold water will be heated to be hot water. This is heating course of cold water.
Applications:
Domestic hot water for shower, washing
Competitive Advantage:
(1). Cheap and reliable solution, Simple structures, Easy installation.
(2). High efficiency of heating,water heated by sun light directly.
(3). Withstands water pressure no more than 0.1MPa.
(4). Operated without any power supplying.
(5). Electric heater can be used as back-up in rainy days.
(6). Hot water can be used directly, or can be used as a pre-heated.
(7). Water flow in the vacuum tubes and is operated when confined.
(8). Tank is equipped with electric water heater setting, automatic temperature controller(optional ).
(9). The insulating layer uses polyurethane bulk bubble,keep hot water 72 hours.
