Closed Circuit Solar Water Heater

Collectors array closed circuit pump and expansion tank regulation heat exchanger.

Closed circuit solar water heater. All water heaters waste heat energy even when the burner is off and the unit is sitting idle between heating cycles. If freeze protection is an issue than a closed system with anti freeze is a good idea. The valves that are usually found in the closed systems are the check valve pressure reducing valve mixing valve backflow preventer and other. The closed circuit fluid is propylene glycol concentrate mixed with water.

The advantage of a drain back system is built in freeze and overheating protection. Gmoi series roof top solar water heater. This water heater is an indirect solar hot water system with a heat exchanger in the solar storage tank. Gmoi series family has 150l 200l and 300l solar hot water system.

A drain back solar system is a non pressurized volume of water in a closed circuit that as the name implies drains back from the panels down to a storage tank at the end of every heating cycle. The premier loline replaces water in the panels with a special heat exchange fluid with anti freeze properties. The closed circuit series solar water heaters have a means of controlling the maximum temperature of the water in the storage tank. Solar water heating primary circuit.

Gmoi series is a roof mounted closed circuit solar water heater designed to provide economic service it is suitable for frost prone or harsh water chemistry areas. Gmo roof top solar water heater save space on the ground and its simple can compact design make it high efficient and reliable. These systems may be installed with a hartstat valve located between the hot outlet of the collectors and the inlet to the tank heat exchanger. Closed systems are often used in second homes or primary residences in areas prone to long power outages.

This water heater is an indirect solar hot water system with a heat exchanger in the solar storage tank. The down side is two heat sources. A closed water heater system means that the hot water cannot expand beyond the valves and mix with the municipal water.