low and high pressure solar geyser system / Open Loop (Active) Circulation Type and Direct Plug Connection Type high pressure solar water heater

Principle of this low and high pressure solar geyser system / Open Loop (Active) Circulation Type and Direct Plug Connection Type high pressure solar water heater:
The vacuum tubes absorb the sun's rays and turn the rays into energy, heating the water in the tubes. As the temperature of the water is rising, The density turns slightly, then the hot water in the tubes floats into the tank, and the cold water in the tank goes down to the tubes. Keeping natural cycling like this, the water in the tank will be heated.
The vacuum tubes heat the water in the tank, but the users do not use the water in it directly. The cold water comes into the exchanger from one side and the hot water heated by the exchanger, and then the hot water comes out from the other side for use.

The Solar Water heater tank is a non-pressurized tank, and has an opening to the ambient atmosphere. Solar water heater tank should always be filled with water to avoid damage caused by dry high temperature working conditions. The stainless steel our use belong to food grade, and SUS 304 & SUS 316 have better corrosion resistance.

Thermal Performance of this low and high pressure solar geyser system / Open Loop (Active) Circulation Type and Direct Plug Connection Type high pressure solar water heater:The system passes over thermal performance test according to EN12976-2:2006-chapter 5.8, parts of the test conditions can get from us.

Technical date of this Pressurized Pre-heated Solar Water Heater:

Key point of this low and high pressure solar geyser system / Open Loop (Active) Circulation Type and Direct Plug Connection Type high pressure solar water heater:
anti-freezing:
Because of all hot water in main tank, the feed tank won't be frozen. It can be working well in -10deg.C. - good performance in rainy & cloudy days
When tap water comes in and out, it will be just 3deg.C less than water in tank. Viz. if 90deg.C in tank, the outlet water will be at 87deg.C after exchanging.
If tank water is 90deg.C, and you catch rainy days, no problem, if you use 50L 40deg.C water per day, you can keep getting such hot water for 15 days!!
The electric heater is only backup, we don't use it anytime practically, except in winter.

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