Detailed Product Description

Introduction: 
  Heat pipes might seem like a new concept, but you are probably using them everyday and don't even know it. Laptop computers often using small heat pipes to conduct heat away from the CPU, and air-conditioning system commonly use heat pipes for heat conduction.

The principle behind heat pipe's operation is actually very simple,  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 or Heat conduction oil .

   At sea level water boils at 100^oC (212^oF), but if at the top of a mountain the boiling temperature will be less than 100^oC (212^oF). 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.  when the heat pipe is heated above 30^oC (86^oF) 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.

Specification
Outer Diameter and Inner Diameter (MM) 47 / 37 58 / 47
Length of Tube (MM) 1500, 1600, 1800, 2100
Thickness of Tube (MM) 1.60 more or less 0.15
Selective absorbing surface: 3layers, aluminum-nitrogen-carbon (Al-N-C)
Material: Borosilicate glass 3.3
Color: Blue
Thermal Expansion: 3.3 multiply 10-6 / k
Maximum Strength: 0.6 Mpa
Absorption of Selective Coating: Above 95 percent
Emission of Selective Coating: Below 5 percent
Stagnation Temperature: Above200m2 degree / KW
Solar Irradiation for Water Temperature Rise below 3.0mj / m2
Coefficient of Average Heat Loss below 0.70w / (m2 degree)
Vacuum above 3.0 multipy 10-2Pa (anti heat loose)