Solar vacuum tubes have been used since the early 1900s. But they’re used for solar heating purposes. Nowadays, most solar water heaters
utilize solar vacuum tubes for their operation. You must be careful as
the vacuum tube temperature can be two times higher than flat panel
collectors.
Solar
vacuum tube technology works like a thermos bottle that traps heat
inside and provides insulation barrier against heat loss. Vacuum tubes
work effectively in cold climates especially the places that experience
freezing temperatures. Generally, Northern Lights use SunRain solar
evacuated tubes for solar water heating purposes. They utilize a copper
heat pipe in the center of the tube.
With
the special aluminum fins, the system transfers solar energy to the
heat pipe containing a small amount of liquid i.e. under a vacuum.
According to physics, it’s stated that liquid under vacuum conditions
boils at 30 degree Celsius (86F) and turns into vapor.
The
vapor goes to the condenser bulb where it gets cold by releasing heat
through the bulb into the copper manifold and changes its state back to
liquid that sinks back down the heat pipe. Solar vacuum tubes
are arranged in series and every tube plugs into a copper header. Heat
exchange takes place in the header and moves from the hot condenser bulb
to the colder heating fluid circulated throughout the solar heating
system.
The copper header is perfectly insulated with mineral rock wool; so there’s a very little heat loss to the surrounding air. Hence, the performance of solar vacuum tube water heating system is much better than other solar collectors.
While investing in solar water heating
systems, it’s necessary to make sure that the engine you choose is the
most powerful and the long lasting. That’s why Northern Lights Solar
Solutions use SunRain patented “3-Hi” solar vacuum tubes. They have
absorbing coating on the inner layer that will determine how vacuum
tubes operate efficiently. The process and material of the coating
determines the expectancy of solar vacuum tubes.
Most vacuum tubes utilize high-tech reactive sputtering process for coating inner tube. More importantly, they have aluminum and aluminum-nitrogen (AI-N/Al) coating. It’s the primary absorbing coating.
SunRain
solar vacuum tube technology utilizes internationally patented film
coating i.e. “3 Hi”. Generally, three systems are used in every solar
evacuated tube for ensuring heat absorption most effectively.
Every
solar vacuum tube includes a primary Al-N/Al layer, a second aluminum
layer and a third copper layer. The added layers in solar evacuated
tubes help in heat conduction in a better way and stabilize the coating
while allowing for a much longer lifespan of 20 years or more.
If you’re thinking to invest in vacuum tubes solar water heating technology, feel free to contact Northern Lights Solar Tubs
at +1 (800) 317-9054. We are the leading name in the solar industry
providing complete DIY solar heating packages from residential solar
water heaters to complete solar home heating systems.
With
our modern SunRain solar evacuated tubes, you can provide solar heating
systems that supply ample heat for hot water, home heating, pool and
hot tub. For more information, don’t hesitate to visit our website at https://www.solartubs.com/.