100 Liter Solar Hot Water System

There are no gaps between tubes hence the exposed area for sunlight gets maximum heat absorbed

A single plate is used instead of using multiple plates

Aluminium side cups are used and it ensures longer life

Polyurethane foam is used as an alternative to glass wool to get minimum heat loss

The thickness of the stock tank is higher than 1.5 mm

Brackets are mounted from inner tank outer cover to provide maximum safety and strength

Technology:

The principle of the roof mounted solar hot water system is that cold water has a higher specific density than warm water, and so being heavier will sink down. Therefore, the collector is always mounted below the water storage tank, so that cold water from the tank reaches the collector via a descending water pipe. If the collector heats up the water, the water rises again and reaches the tank through an ascending water pipe at the upper end of the collector. The cycle of tank–water pipe–collector ensures the water is heated up until it achieves an equilibrium temperature. The consumer can then make use of the hot water from the top of the tank, with any water used being replaced by cold water at the bottom. The collector then heats up the cold water again. Due to higher temperature differences at higher solar irradiances, warm water rises faster than it does at lower irradiances.

The collector panel consists of an array of tubes, backed by a reflector panel. There are several strategies used by each producer to keep the durability and keep the heat loss minimum to make their brand unique.