Coral Plumbing

All Solahart solar hot water systems, where the tank is roof-mounted, use the Thermosiphon principle to collect heat from the sun and transfer it to your hot water. The Thermosiphon principle is based on two naturally occurring phenomena:

• Dark objects absorb heat
• Hot water rises

All Solahart solar collector panels are coated with a dark, heat-absorbent surface. This coating absorbs the suns rays and heats the fluid in the collector panel. As the fluid heats, it rises to the top of the collector panel and into the tank where it displaces cooler fluid which flows in to the bottom of the collector panel where the process is repeated. The greater the temperature difference between the fluid in the solar collector panels and the water in the tank the faster the flow between them. In open circuit systems the fluid in the collector panel is water while in closed circuit systems a special antifreeze fluid called, Hartgard, is used.