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Evacuated Tube Solar Hot Water Systems Australia

How do evacuated tubes work?

To really understand how they work you need to see one in action. If you touch an evacuated tube on the outer glass on a sunny day, the outer glass will be the same temperature as the air temperature. If you touch the inner glass you will be badly burnt and probably need to seek medical advice. DO NOT TOUCH THE INNER GLASS! It will be about 250 Deg C.

Evacuated solar tubes were first designed in Australia over 30 years ago and the basic design has not changed much over that period. 

They work by absorbing the suns energy in the form of UV rays and convert that energy  into thermal energy using  conduction. 

Each tube works independently and is over 93% efficient in capturing the suns energy.  This extraordinary efficiency is only possible due a vacume within the tube that acts as an insulation barrier between the internal tube and the external air.  The internal layer of glass has three coatings to help with heat absorption and transfer and the external layer of glass is clear to let the heat pass through it. The insulation layer ensures that the heat entering the tube does not escape again. An evacuated tube can be over 200 Deg C on the inside but the external layer of glass will be within a few degrees of the ambient air temperature. 


The 2 types of evacuated tube solar hot water:

Wet Tubes/flooded tubes: 

A 'wet' or 'Flooded' evacuated tube is full with water and the suns heat is directly transferred to the water within the tube. That heat is then thermosyphoned into a storage tank.

Heat pipes/Dry tubes:

A dry tube uses a heat exchange within the tube to transfer the heat from the internal layer of glass to the water. Within the tube there is a aluminium fin and a copper pipe. When the inner glass layer warms up, the heat is transferred through the aluminium fin to the copper pipe. The copper pipe is sealed and has a small amount of liquid inside it that boils at around 40 Deg C. When the liquid boils, steam is created within the pipe and the steam rises to the top of the copper pipe. The end of the copper pipe has a bulb that fills with steam and then transfers the heat to a copper manifold that is holding the liquid to be heated (usually water). As the water extracts the heat from the bulb, the steam condensers and the liquid runs back down the copper pipe to be reheated again. Once the water in the manifold is 8 deg C hotter than the storage tank, the pump will turn on and bring the solar heater water down to the storage tank.


Evacuated tube specification details.




Get Your Evacuated Tube Solar Hot Water Systems from Red Circle Solar

Modern technology has made it possible for us to harness the power of natural resources. Sophisticated solar hot water systems leverage the power of our sun to heat up water in a much more efficient way when compared to traditional methods.

Using our systems, you can produce up to 85% of you hot water needs using the sun. This efficiency is achieved through the arrangement of specialist components within a system. Our team has developed this solution over the past decade, and we have implemented it in countless homes across Australia.

Australia's Best Evacuated Tube Solar Hot Water Systems

If you’re considering using this technology to save on your bills while protecting the environment, then you’ll want to trust in a capable and professional provider. Here’s a closer look at why so many Australians trust us to install their evacuated tube solar hot water systems. 

If you’re looking for a reliable and effective evacuated tube solar water heater, you’ll want to turn to us. We use only the best materials and the best-designed systems, meaning that your yield is as high as it can possibly be. Over the years our solution has been refined and tweaked to offer continual improvements.

Evacuated Tube Solar Hot Water Systems Prices

If you want an insight into the quality of the evacuated tube solar water heater that we offer, be sure to check out our reviews and testimonials.

When it comes to evacuated tube solar hot water systems prices, the figures can get quite high. Our systems have been specifically designed to balance quality and cost. You’ll find that our systems use quality materials but cut out the number of moving parts. This results in a cheaper system that is less prone to mechanical errors.

But even if you do run into a problem with your evacuated tube solar system, we have you covered.

Reliable Evacuated Tube Solar Warranties

We are proud to offer a range of warranties on our products. Each one of our products is compliant with Australian regulations and is built to last. Our generous warranty coverage means that if you run into a problem with your system, we will be able to rectify that issue right away.

Our team of expert engineers are capable and professional, and they know their way around our systems like the back of their hand: you can rest assured help is there if you need it.

Questions About Our Evacuated Tube Solar Hot Water Systems?

Ready to make savings on your bills while protecting the environment around us?

We are dedicated to green causes, and we respect your decision. You’ll help to make the world a better place and our team thanks you for it. You’ll find that we are driven by the same principles that are motivating you to make this decision.

If you would like to learn more about us, then visit our website. If you have any questions at all, then don’t hesitate to contact one of our friendly and helpful representatives who will be able to offer an answer to your question, no matter what it may be.

So whether you're looking for a solar hot water system, a solar hot water tank, a solar heat pump a solar hot water heater, solar hot water tubes or a evacuated tube solar water heater.