Coil Solution

The conventional way of making heat transfer from a solar collector to a hot water tank is through a heat coil, and many companies are comfortable about it despite the fact that it does not promote stratification at all.

The use of coils for heat transfer is therefore like using no stratification device at all, and the energy efficiency is as a result of this very low.

In the video to the right, a simulation of solar charging through an afternoon after the system has been fully discharged is demonstrated without a stratification device installed. As it is seen in the video, this will cause a complete mixing of the water inside the tank.

Video demonstration