The HelioPower Solar Power Water Heating System is by definition an flat plate collection system designed for architecturally sensitive installations. It is capable of providing heating and pre-heating of domestic hot water, radiant heating or process water heating to temperatures as high as 60°C. Collector performance will vary based on site conditions that include roof material and colour, roof slope, latitude and azimuth. Though dependent upon site conditions and wind levels, a bright sunny day in the winter will generally result in the heating of fluids to 30°C above ambient temperatures.
On sunny days in South Africa / Western Cape, a 40 - 60 m2 system will provide lots of hot tap water for a family of 5 persons (total 200 liter per day), on a year round basis. Heat not taken out for hot tap water will increase the 40 m3 pool temperature 5-12 degree.
The HelioPower collection system is priced higher compared with other solar thermal collection systems. But is the only Solar Power Water Heating System fully integrated inside the building.
The Solar Power Water Heating System has no maintenance since it is completely concealed and there are no active parts under the roof. The cassettes are extruded from highly durable aluminium and further protected from the weather. The usefull life of the system is estimated to be at least 40-60 years.
Yes, if only used for pool heating the system will benefit of its own pumps and electronics to control according to when the sun is shining.
Yes, the roofing materials, like the stone slates, must be removed by qualified personal. Hereafter the HelioPower cassettes are mounted inside the wooden construction. No change to the roof construction is needed - its kept fully original.
On the quarried slate roof the system occupies no extra space as its "hidden" inside the roof construction materials creating an "invisible solar collector".
On the asphalt shingle roof it is also easy to install Solar Power Water Heating System , but 19 mm plywood and 50 mm hard fiber insulation covering the roof are a must from the start.
For standing seam metal roofs the system occupies a 32 mm layer between the building sheathing and underneath appropriate roofing and siding materials creating an "invisible solar collector".
All collector areas should be on roof or wall planes facing as close to due north as possible. Generally, the steeper the pitch the better. A typical roof pitch is 20-30 degree.
The Solar Power Water Heating System system is a "passive system", which harvests the suns energy by absorbing the long wave radiation from the sun and transfer the heat from the roofing material into water that is pumped directly to the pool or through either a closed or open loop storage heat exchange and storage system.
SABS are in the process of testing the technology.
The Solar Power Water Heating System cools the roof at the same time that it heats water, thereby reducing the cooling needs of the building. By operating the system at night and using the night sky to cool fluids, the system can provide radiant cooling and process cooling in certain applications.
Prices will vary with system size and complexity, but rules of thumbs are: A complete S8 HelioPower Solar Power Water Heating System for a typical quarry slate roof with the area of 50 m2 (suitable for a 200-300 m2 home with ~40 m3 pool) will cost less than R 3,500 / m2 collector area. Prices without VAT, possible financial incentives, not including roofing materials, siding system.
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