High Pressure Storage Tank on top of the roof not inside
How does it Work? - The Beauty is the Simplicity of its inner workings
The Integrated High Pressure system comprises a Collector - a bank of evacuated tubes - directly coupled into a storage tank, mounted in a frame on the roof.
While the tank is connected to the high pressure supply, the outlet feeds Solar pre-heated water to your geyser or directly to the outlet point under high pressure.
The vacuum tubes absorb the sun's rays and turn the rays into heat energy, heating the contents in the tubes.
Working theory of our vacuum tubes
The vacuum tube is composed of an inner tube, outer tube, selective absorption layer, vacuum space, and inspiratory layer.
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The space between the outer and inner tube is the vacuum space. Like a thermos flask, it insulates the inner tube from the outer tube preventing cold from entering, and heat from escaping.
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At the bottom of the outer tube, there is an inspiratory layer which can be used to absorb the remnant air after evacuation of the tube in the production process, and can absorb the air which filters from the atmosphere into the vacuum tubes.
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The inner tube stores a Heat Pipe. The outer wall of the inner tube is the selective absorption layer. The selective absorption layer transforms solar radiation into heat energy.
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Its Light, not Heat that generates Energy
The radiation comes in many forms, particularly UV light which penetrates clouds and enables our system to operate even under low temperature and low light conditions.
The heat energy can't escape the vacuum layer, so heats up the Heat Pipe in the inner tube, causing circulation.
What is the Heat Pipe and how does it work?
As the temperature of the water raises the density drops slightly causing the hot water in the tubes to rise into the tank, and the cold water in the tank to sink down into the tubes.
This natural circulation (thermosiphon effect) heats the water in the stainless steel tank which is encased by a polyurethane layer protected by a steel outer casing. The insulation layer and the vacuum in the tubes protect the circulating water from the elements and prevent heat escaping from the system.
The vacuum tubes heat the water in the tank, but users don't use the water in it directly. The storage tank sits at low pressure prolonging its life.
The high pressure cold water supply feeds into the exchanger from one side, the water is heated by the exchanger, and then the hot water comes out from the other side ready for use.
No pumps, no glycol, inexpensive copper sleeve heat exchangers.
