How the System Works

There are 3 forms of heat transfer.
1. Conduction
When two objects come into contact, heat transfers between the two surfaces. This is based on the type of materials and contact surface area. Copper is without question, the fastest heat conducting material. These solar water heaters use copper tubing to transmit heat from the tubes to the water manifold, which is then collected by the water and then pumped to your water tank.

2. Convection
Convective heat transfer is caused by the flow of a fluid over an object. There is convection caused when the water is pumped through the solar collectors, enabling fast heat transfer and low pumping time. What about the wind blowing over the solar collector? No worry. These are vacuum tubes. The convection must occur directly on the object to cause heat transfer. Wind cannot take any heat out of the system since the vacuum tubes have a void between the copper tubing and the outside glass.

3. Radiation
Radiation occurs all the time with any object. Heat can travel through space through radiation. There's no stopping it. The good news is that the radiation coming out of the solar collectors is extremely minimal, and the radiation coming in from the sun is extremely high due to the black shading of the vacuum tubes and aluminum inserts.

This is the highest of quality solar collector you can get. Copper, aluminum, vacuum tubes. The absorption efficiency is about 95%.