Vacuum Tubes also referred to as the “Sydney” tube, “twin-tube” or “all-glass”, the tube is essentially two glass tubes that are fused at the top and bottom. The inner tube has a solar absorbing coating, and the space between the two tubes is evacuated to form a vacuum. The tubes are made from a type of glass called Borosilicate, the same base material as used in many Pyrex glass products used in kitchens around the world. Borosilicate glass has the characteristic of being very strong and also has excellent light transparency.
The vacuum between inner and outer tubes is an excellent insulator against heat loss, and so evacuated tubes are able to operate very efficiently when there is a big difference between the inside of the tube and the outside ambient air. For this reason evacuated tubes are the ideal choice for high temperature hot water applications or locations that get cold in the winter.
Technical Specification of Our VTSWH
|Tube Size||Φ58 X 1800 mm|
|Inner Tank Material||SUS 316|
|Outer Tank Material||SUS 201|
|Inlet/Outlet Connection||1” Male Thread|
|Tank Insulation||60 mm PUF Insulation|
|Sacrificial Anode||Φ 20 X 300 mm Magnesium Rod|
|Provision for Backup Heating||Yes, 1 ¼ “ Female Thread|
|Air Vent||¾” Male Thread|
|Freezing Resistance||-15 ºC|
Appropriate for a Nepali Family, VTSWH come in four sizes.
|Size||Capacity||Max. Number of Family|
|20 Tubes||200 Liters||
|25 Tubes||250 Liters||
|30 Tubes||300 Liters||