Generally, a solar vacuum tube is perfect for applications like heating water and space in the Northern climates. Solar evacuated tubes work really well for solar pool heating purposes as they can be able to heat the pool even if the weather is cloudy. They provide enormous heat energy for heating pool, water and space even when the outside temperature is minus 40 degree.
However, solar vacuum tube water heating kits are used to harness the solar energy and turn it into hot water for your home and business. Top quality solar vacuum tubes deliver higher performance and efficiency, perfectly suited to the Canadian climate and Northern USA weather. They continue producing hot water during the depth of winter.
Whether you’re starting out residential or commercial solar projects, evacuated tube solar water heaters are perfect to use as they absorb 94% of solar radiation. Their working principle is same like a perfectly built thermos. The air present in between two glass layers is sucked out during the manufacturing process to produce vacuum.
There’s no availability of air inside the vacuum layer which means there’s no way of transferring heat from a layer to another. It enables the vacuum tubes to capture solar energy of up to 94% and lose about 6%, making them extremely efficient.
Typically, a vacuum tube comprises of four specially coated layers like copper, aluminum, and stainless steel in the inner tube. These layers help in solar energy absorption and transfer them to the centre of the vacuum tube through a heat fin.
How Does Solar Vacuum Tube Work? 
A solar vacuum tube collector works by heat energy transfer from the sun to the copper heat pipe present inside it. The copper pipe contains a small amount of distilled water. This tube is perfectly engineered like a glass evacuated tube under the vacuum condition.
The vacuum is very significant to the operation of solar water heater. You know that water boils at 100C at sea level. With changing pressure, the boiling point of water changes. For example, water boils at the top of Mount Everest at only 35 degree Celsius. It’s because of the less pressure. Though the water inside the copper heat pipe is in vacuum, it gets boiling at much lower temperature i.e. 30 C.
The boiling water produces steam vapor that goes to the top of the heat pipe and then to the expansion bulb. The bulb is connected to the copper heat exchanger and the hot steam starts losing its temperature and pressure and goes back to water. The cycle goes on continuously and doesn’t include any moving parts. This means, you will get much longer durability of solar vacuum tubes.
Why do you invest in a solar vacuum tube?
There are different reasons behind investing in solar vacuum tube collectors over flat plate ones. Some of them are discussed below.
Easy to install – The light weight aluminum frame is installed first and the tubes. After that, they are plugged in one at a time without any crane or hoist. 
Affordable – When a tube breaks down, the system performs. There’ll no actual lost of fluid from the system. Glass tubes can be replaced easily at a low price of $20 per each tube.
Efficiency – Due to the presence of vacuum, the collectors won’t lose heat. This means, they work effectively in cold winter temperature whereas other collectors fail to do so.
Remains Perpendicular to the Sun – The solar vacuum tubes always remain at a perpendicular angle to the sun throughout the day unlike flat plate collectors.
Bottom Line –
Want to learn more about solar vacuum tube collectors? If yes, then you should rely on Latitude51 Solar. Feel free to contact us as soon as possible at +1(800) 317-9054 and we’ll get back to you right away.
