AST SOLAR ENERGY AST SOLAR ENERGY USEFUL ADDITIONAL INFORMATIONS DIMENSIONING Our experience has shown that the solar mat area should be between 50 and 80% of the water surface. In many cases the absorber surface is limited by the size of the existing roof surface. If this is less than 50% of the pool surface, it will not be possible to do without addi- tional heating. If the roof surface is in the above-men- tioned area of the pool surface, an additional heating system is not necessary. In principle, however, the dimensioning depends on the so-called microclimate in the area of the basin. Also the willingness of the user to accept fluctuating or sli- ding pool water temperatures is also a factor for di- mensioning. In order to keep the pool water temperature constant, the solar system can be optionally equipped with a heat pump. This allows you to make maximum use of the solar yield. The heat pump can also maintain hea- ting in bad weather. If desired, AST can design and in- stall your solar system with integrated heat pump from a single source. CONTROL & HYDRAULICS The flow through the absorber mats must be uniform. When the flow path is divided into many parallel chan- nels, the water seeks the path with the least resistance. AST pays attention to equal resistance in the design of its systems. This is possible if all paths are of equal length (so-called Tichelmann piping) and the pressure losses in the distribution pipes are not very significant. In hydraulically well designed solar systems, the con- sumption of electrical energy for the pumps should not exceed 1 to 2% of the solar energy generated. The flowrate characteristics of the absorber surfaces and distribution piping is designed in such a way that neither excessive temperature (and thus loss of effi- ciency) nor excessive pump energy consumption oc- curs. During the construction of the system we make sure that the solar mats can be laid over large areas. SUMMARY For previously unheated outdoor pools, the installation of a solar system is not only the most environmentally friendly solution, but also the most economical. A solar system for an outdoor pool with 1000 m² water surface costs less than the installation of a boiler and the ne- cessary operating equipment (operating building, gas connection or oil or gas tank, chimney). Running ope- rating costs (except for pump energy) and environmen- tal pollution do not arise with the solar system. In the case of already heated open-air swimming pools, economic efficiency is achieved by saved hea- ting energy. Since the temperatures in indoor pools are generally higher than in outdoor pools and year-round operation is offered indoors, the solar system in com- bination with a heat pump and a conventional heating system is optimally utilised as an efficient and environ- mentally friendly source of heating. On the following pages we present the individual mo- dules, functional diagrams, dimensioning and energy yield calculations as well as examples of plant cons- truction. We would be pleased to be at your disposal for consul- tation - the pathway to your AST solar system is safe! AST works according to the requirements of ISO 9001 and ISO 14001 with the de- mand for highest sustainability, quality and availability.