The Solahart HS Series is a solar water heating package intended for use in commercial or industrial applications. It can be integrated into an existing installation to provide solar pre-heating for energy cost reduction, used in the replacement of existing equipment, or used in new installations.
The HS Series provides superior benefits to conventional solar water heaters including ultimate frost and over-temperature protection by way of its unique drain back function.
The system comprises a quantity of Solahart’s proven high performance solar collectors, connected to a central heat store located at a lower level, which serves as the energy source to instantaneously heat the fresh potable water supply on demand, via a highly efficient delivery skid.
System Features
Hygienically Clean Hot Water
The compact heat exchanger delivery skid heats the water only at the moment it is needed - a quick, safe and hygienically clean solution.
The skid contains a pair of completely integrated high-efficiency stainless steel plate heat exchangers, allowing for high heat transfer with a low temperature difference between the primary and secondary circuits, and minimising both flow rate and return temperature in the primary circuit.
Accurate Temperature Regulation
The delivery skid incorporates an integral variable speed energy efficient supply circulator for the primary circuit heating source, which is regulated by an on board controller to optimise the primary fluid flow rate. The electronic controller monitors the temperature of the hot-water outlet temperature and the flow rate of the cold water supply, to accurately control the primary circulator speed (and rate of energy transfer), to meet the hot water temperature and flow rate required by the user.
Intelligent Energy Management
The ability to control the rate of energy transfer allows the solar energy to be stored at a higher temperature than the fresh water temperature that is actually supplied to the user. This subsequently allows for increased energy storage density and efficiency, and on days when available solar energy input exceeds the hot water demand, the energy surplus can be stored for use on subsequent days rather than wasted.
Drain Back Feature – Freezing & Over Temperature Protection
The automatic drain back feature of the closed circuit prevents wet stagnation of the closed circuit fluid in the collector array. This eliminates potential damage due to boiling of the fluid and also ensures that the collected energy remains in the storage vessel. This same feature protects the collectors from freezing during frost periods.
