Solar VTS Heat Pipe

Heat Pipe
Heat pipe is used in vacuum tube solar systems and one of the advance technology like indirect / scale free systems. It widely used in cold countries where temperature below 0oc.

As a key component of the heat-pipe collector, heat-pipe plays a very important role in this solar collecting system. The heat-pipe is composed of heat-energy absorption unit and condenser unit, and is hollow with the space inside evacuated. Under the vacuum circumstance, the air pressure inside heat-pipe is very low, thus the medium can be evaporated easily when absorbing certain energy. This vapour rapidly rises to the condenser zone and transfers heat, then becomes the liquid and returns to the bottom of the heat pipe since the heat is lost. This process repeats again and again, so the solar energy is transferred continuously.

In heat-pipe collector, the condenser zone of the heat-pipe is inserted to the copper sleeves which are distributed on the water pipe averagely. After the solar energy is absorbed by the vacuum tubes, it is transferred to the heat-pipe through the aluminium fin. Heated by the energy, the medium in the heat-pipe is working and transferring the heat energy to the condenser zone. When water or other medium in the water pipe flows across the copper sleeves, they would bring the energy and be heated.
Technical Specifications for Tank
Technical Specifications for Tank :
Inner Tank 2.5mm Galvanized Iron (G.I) Plazma Welded
Inner Coating High Grade Anti-Corrosive Coating
Outer Cladding 0.5mm Galvanized Iron (G.I) with
  P P Powder Coating
Insulation 50mm PUF (38kg. / mt3 density)
Stand 1.6mm (G.I) with P P Powder Coating Or
  30 x 30 x 3mm M.S with P P Powder Coating
Connections 1”
Electric Backup 1.25”
Technical Specifications of Vacuum Tube
Technical Specifications of Vacuum Tube :
Material 1.6mm Borosilicate 3.3 glass
Outer Diameter ¢ 47mm / 58mm / 70mm
  (whatever applicable)
Inner tube diameter ¢ 37mm / 47mm / 54mm
  (whatever applicable)
Tube Length 1500mm / 1800mm / 2100mm
  (whatever applicable)
Absorptive coating CU - AL - N / SS (Three Layer)
Vacuum P<5 x 10-3 PA
Absorptance >92%(Am1.5)
Glass thickness 1.6mm
Benefits for You
Benefits for You :
Get 50 to 65 degree hot water at any time at almost zero recurring expense
50mm PUF Insulation retains heat for a longer duration
Once installed, noi worry of frequent maintenance
Better and longer Service span of equipment due to 2.5mm thick inner tank
Increased heating efficiency due to specially developed triple coated glass tube
100% dependable compared to Gas & Electric Geyser
Keeps environment clean as 100 litres SWH prevent emission of 1.5 tonnes of carbon-dioxide per year
Application Areas
Application Areas :
Chemicals & Fertilizer
Boiler Feed
Hotels & Resorts
Hostels & Canteens
Hospital & Nursing Homes
Military Barracks & Cantonment
Raw Houses
Swimming Pools
Even though the heat pipe is a vacuum and the boiling point has been reduced to only 25-30 oC (86 oF), the freezing point is still the same as water at sea level, 0 oC (32 oF). Because the heat pipe is located within the evacuated glass tube, brief overnight temperatures as low as -20 oC (14 oF) will not cause the heat pipe to freeze.

The Service life of the heat pipe can be longer than 10 years.

The unique connection between the heat pipe and the vacuum tube can ensure both sealing and replace of damage glass vacuum tube.

Reference Drawings
Advantages of VTS
Advantages of VTS :
Higher Temp. Than FPC System.
Get Quick Result in Rainy & Cloudy Atmosphere.
No Need to Service for Long Time
Easy to get Temp. In Hard Water.
VTS is Widely Accepted in Cold Countries.
VTS is Cheaper than FPC System.
No Clogging / Choking
Monthly Savings Chart
Monthly Savings Chart :
Traditional Energy 100 300 500
2 kw electric heater 654/-* 1308/-* 1962/-*
Natural Gas 523/-* 1046/-* 1744/-*
* Price of electric unit Rs. 4 + tax caculation is shown
* price of gas Rs. 40/1kg.
* In calculation, temperature of water is kept at 50 oC