Osmo solar water heater
Evacuated Tube Collector Solar Water Heaters in Nepal
Osmo solar water heater in Nepal Kathmandu
Working Principle of Evacuated Tube Collector (ETC) System provided by HK Traders :
HK Traders Solar Water Heater, the brand name called osmo solar water heater works on a simple principle.
Solar water heating systems using vacuum tubes made of borosilicate 3.3 which is very good for absorption of heat with special coating to absorb the solar energy are called as Evacuated Tube Collector system. And it is 2.0kg weight. The size of the Tube is 58*1800mm.

Inner glass tube is coated with the world best magnetron sputtering HI- tech layer of CU/SS-ALN with AL base.
Vacuum tube, as shown in the sketch, is the main component, which absorbs solar energy. The vacuum tube is an assembly of two concentric, borosilicate glass tubes.
Air between the gap of two glass tubes is evacuated. It results in high level of vacuum, which acts as the best insulation to minimize the heat loss from inner tube. The black coating on the inner tube absorbs the solar energy and transfers it to the water. The water on upper side of Vacuum Tube becomes hot and get lighter, so it starts moving upwards in the tank. At the same time cold water, which is heavy, comes downward from the tank and is stored at the bottom. The phenomenon is called as natural Thermo syphon circulation, which occurs in every tube.
Thermosyphon Systems : In this type water flows through the system and when water gets warm it rises as cooler water sinks. The collector is installed below the storage tank so that warm water will rise into the tank. These systems do not involve any pump and are more reliable.
HK Traders Evacuated Tube Collector Solar Water Heater in Nepal
Features:
- High quality tubes made from borosilicate glass
- No clogging/choking
- Long lasting
- Better performance in winter and cloudy days
- Inner glass tube is coated with the world best magnetron sputtering Hi-Tech, layers of CU/SS-ALN with AL base
- Heats water to a very high temperature
- Makes hot water available even on partially cloudy days
- High quality PUF insulation for maintaining high temperature of water inside the tank
- Compact
- Easy to install, operate and maintain
- Works efficiently with hard water
- 6 mm ss tank thickness for hot water storage
- 1.2 mm stainless steel stand
- Safe and environment friendly
Specifications of Evacuated Glass Tubes:
| Material of Glass | Borosilicate Glass |
| Length | 1800 mm |
| Outer diameter | 58 mm |
| Thickness of Glass Tube | Outer tube thickness: 1.8 mm, inner tube thickness: 1.6 mm |
| Selective coating type | CU/SS-ALN with AL base |

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