Direct Flow Collector Systems

Entwicklungs- & Vertriebs GmbHRTechnical datasheet | Direct FlowInnovative – Powerful – Long-livingBased on their hydraulic properties, DF collectors are able to be integrated on any building (pitched roof, facade or even free standing). The s-power collectors are used for solar drinking water, pool heating, furnace support and process heat. The s-power DF tubes carry a coaxial heat-extraction-pipe (pipe within a pipe). The to be heated heat-carrier-fluid runs from the header through the inner pipe towards the lower part of the vacuum tube and then through the outer pipe (outer heat pipe) back towards the header. On its way back to the header, the heat is transferred from the outer pipe, which is connected to the absorber, onto the heat-carrier-fluid. All vacuum tubes are axial adjustable towards the sun and can be individually exchanged. The innovative plug-in connection system of the tubes allows them to be fast and securely assembled inside the header. Their modular concept allows the collectors to be fast and easy installed onto the building.The s-power DF (Direct Flow) collectors are „real“ all seasons systems with exceptional yearly solar earnings (kW/m²/a). They therefore set new stan-dards in the area of diffuse irradiation. The one-of-a-kind anti-reflex-coating (nano-coating) applied onto the inner and outer side of the glass tube al-lows for an extraordinary high light transmission (~97%), a very low light reflection (~3%) and therefore outperforms all standards so far. The high performance-copper-absorber, which is coated with Titan-Nitrid-Oxide (TINOX), absorbs the sunlight highly effective. (~96%). The absorber is welded onto the heat-carrier-pipe using ultrasound-welding. The patented, innovative glass-metal connection grants for highest quality measures (10 years warranty by the manufacturer). The glass-metal connection seals the glass tube to preserve the high-performance-absorber-unit enduringly under a vacuum of 10-5 mbar (100% Insulation).2Product description:DF (Direct Flow) collector systemsABCDEDEFTechnical detailsA Header DF with insulationB ConnectorC InsulationD Evacuated glass tube (High vacuum of 10-5 mbar)E AbsorberF Coaxial heat-extraction-pipeThe high-performance Vacuum tube collector, type DF is tested based on DIN 12975-1/ 12975-2 and has the „Solar Keymark” Certificate.Entwicklungs- & Vertriebs GmbHR3Product description:Technical factsDF10-1000Collector type DF20-2000 DF30-3000Performance Power Plus *1 1079 Wpeak 2158 Wpeak 3238 WpeakAperture area Power Plus 1,464 m2 2,928 m2 4,392 m2?0 Power Plus *1 0,75 0,75 0,75Performance Power *2 785 Wpeak 1570 Wpeak 2355 WpeakAperture area Power 1,017 m2 2,034 m2 3,051 m2?0 Power *2 0,80 0,80 0,80Number of vacuum tubes 10 Stk. 20 Stk. 30 Stk.Length 2190 mm 2190 mm 2190 mmWidth 750 mm 1500 mm 2250 mmHeight 88 mm 88 mm 88 mmGross area 1,62 m2 3,25 m2 4,87 m2Weight 24,57 kg 49,13 kg 73,70 kgVacuum in the tube (100% insolated) 10-5 mbar 10-5 mbar 10-5 mbarFluid volume 1,36 l 2,72 l 4,08 lCollector ?ow rate 0,68-0,83 l/min. 1,37-1,66 l/min. 2,05-2,48 l/min.Pressure loss with ?ow rate 22 mbar 75 mbar 195 mbarMax. operating pressure 10 bar 10 bar 10 barMax. collector stagnation temperature 192° C 192° C 192° CCollector connection 18 mm Ø 18 mm Ø 18 mm ØCollector installation (tube) min. 0° max. 90° min. 0° max. 90° min. 0° max. 90°Heat carrier ?uid S-SOL-VT50 S-SOL-VT50 S-SOL-VT50*1 Peak performance as per Keymark, with a solar irradiation of 985 W/m² and a radiation angle of 15° in relation to the aperture area absorber n of vacuum tube is coated on both sides. *2 Peak performance as per Keymark, with a solar irradiation of 985 W/m² and a radiation angle of 15° in relation to the aperture area absorber n of vacuum tubes is coated on one side.ABCTechnical dataAB CErrors and omissions excepted. Date 05.12 Vacuum tube collector „Made in Germany“ featuring the NARVA High-Performance-Vacuum tubes „Made in Germany” labeled with the OTTI-Innovation award of 2008. High performance due to the anti-reflex coating on the basis of nano-particles and high selective absorber surface. Hail and impact resistance certified by TÜV - Rheinland Group based on DIN EN 12975-2. Patented glass-metal-connection (by highly experienced glass manufacturer) protects the vacuum permanently. 10 years warranty for vacuum by the manufacturer. Tube connection via plug-in principle of Direct Flow. Tubes are able to be rotated and individually angled. Consistent tube distance when mounting more then one module together. Low weight Low fluid volume Shortest energy amortization Amortization of purchase cost within 6-8 years possible. Simple installation due to s-power mounting-and connection systems.Product advantages:Entwicklungs- & Vertriebs GmbHIndustriestraße 24-2749716 MeppenFon: +49 (0) 5931 88 3 88-0Fax: +49 (0) 5931 88 3 88-99Net: www.s-power.deRCertificatesThe s-power high-performance vacuum tube collectors comply with guidelines of a variety of certification-and testing institutions: Solar Keymark certification DIN EN 12975-1 and 12975-2. TÜV Rheinland collector testing DIN EN 12975-1 and 12975-2. CE-label according to EC-guidelines. SRCC-label (Solar Rating and Certification Corporation) for the USA according to SRCC guidelines. CSA-label (Canadian Standards Association) for the USA, Canada and countries worldwide according to CSA guidelines. OTTI Innovations award 2008 for the Narva high-performance-vacuum tube.4submitted by: