Heat pipe solar collector:
The heat pipe is hollow with the space inside evacuated, much the same as the solar tube. In this case insulation is not the goal, but rather to alter the state of the liquid inside. Inside the heat pipe is a small quantity of purified water and some special additives. At sea level water boils at 100oC, but if you climb to the top of a mountain the boiling temperature will be less that 100oC. This is due to the difference in air pressure.
Based on this principle of water boiling at a lower temperature with decreased air pressure, by evacuating the heat pipe, we can achieve the same result. The heat pipes used in solar collectors have a boiling point of only 30oC. So when the heat pipe is heated above 30oC the water vaporizes. This vapour rapidly rises to the top of the heat pipe transferring heat. As the heat is lost at the condenser (top), the vapour condenses to form a liquid (water) and returns to the bottom of the heat pipe to once again repeat the process.
At room temperature the water forms a small ball, much like mercury does when poured out on a flat surface at room temperature. When the heat pipe is shaken, the ball of water can be heard rattling inside. Although it is just water, it sounds like a piece of metal rattling inside.
This explanation makes heat pipes sound very simple. A hollow copper pipe with a little bit of water inside, and the air sucked out! Correct, but in order to achieve this result more than 20 manufacturing procedures are required and with strict quality control.
Wuxi wankang solar water heater Co., Ltd. is specializing in developing, producing and applying solar products. It is a high-new technology enterprise also dedicated to developing and manufacturing products in environment protection field. We had established large scale base to manufacture solar water heater products. Which intergraded scientific research, producing and international trading together.
Wuxi wankang solar water heater Co., Ltd. Covers about 15, 000 square metre, now it has more than 300 workers and staff members, among of them, above 65% are premium, medium and high grade technicians. With a powerful technician team and advanced facility, the company capacity can reach 250, 000 sets per year. Also wankang company has been approved by ISO9001: 2000 and our products has exported to Japan, Europe, USA, Africa and south east Asia. It enjoys a good reputation in domestic and abroad. Wankang look forward to establishing business relations with you and build up a beautiful green garden.
