heat pipe vacuum tube

The Sun's thermal energy is then transferred to the manifold via the heat pipe located inside each tube. The small amount of evaporative liquid in each tube is super heated by the Sun's energy and forms a vapour. The vapour rises to the top of each pipe; this heat is then transferred to the water flowing through the manifold. The heated water is then returned to the tank.

Evacuated Tube technology delivers significantly better performance than traditional absorbers on the market today. Their advanced design incorporates tubes that consist of two layers of high quality borosilicate glass with a vacuum layer between them. This vacuum acts like a thermos flask, retaining up to 97% of the thermal energy, resulting in hugely increased efficiency.

Most solar hot water systems use old fashioned flat-plate collector technology which has been around since the 1970s. It works but there is a longer lasting, more efficient, better looking alternative: Hills Solar Esteem Evacuated Tubes. Hills Solar Esteem hot water systems use state-of-the-art technology based on evacuated glass tubes and highly efficient heat transfer techniques.

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