Application Areas of PV/T (Hybrid) Collectors and Business Trend in the World Solarex Istanbul, 2015 Hüseyin Gökalp, Director Sales Solimpeks Solar Energy Corp., Fevzi Çakmak Mah., 10750 sk., No.3 Konya, Turkey
Outline Introduction PV/T collector System components Pipework 4 glazed PV/T array Heat pump Integration Demonstration of PV/T applications System pre-design processes Mounting applications Business trend in the World 2
Introduction Photovoltaic (PV) cells suffer from a drop in efficiency with the rise in temperature due to increased resistance. A typical PV panel loses about 0.5% efficiency against every 1 C temperature rise. 3
Introduction Such systems can be engineered to carry heat away from the PV cells there by cooling the cells and thus improving their efficiency by lowering resistance. Such loses can be reduced with hybrid collectors which generate both electricity and usable thermal heat at the same time from one panel. PV/T collectors can have either liquid flow or coolants. air flow The first study on water-type PV/T collectors was conducted by Hendrie in 1970 s. The first study on air-type PV/T collectors was conducted by Proffesor Böer (University of Delaware) in 1974. 4
PV/T collector Constituent layers of PV/T collector 5
PV/T collector Cross-sectional view of PV/T collector
PV/T collector Unglazed PV/T Designed to increase the electrical return of the panel as well as to produce a reasonable amount of summertime heat production. 15% more electricity than conventional Photovoltaic and Small contribution to the thermal requirements of a building. Peak output s:200/460 watts electrical/thermal respectively. Glazed PV/T Developed to maximize on the thermal return of the panel as well as capable of electrical production. 80% of the output of the equivalent area of solar thermal. Peak output s:185/690 watts electrical/thermal respectively.
System components Panel connections
System components Rails and clamps
System components Roof anchors
System components Slate roof
Pipework
4 glazed PV/T array
Heat Pumps COP proportionality of delta T Standard methods for maximising the COP of a heat pump, low temp When we raise the source temp, there is a drop in the delta T Integration with PV-T benefits to Heat pump, higher COP Benefits to the PV-T, outputs, longevity
Heat Pumps
Integration PVT Pellet Boiler Biomass Boiler Gas Boiler Oil Boiler Wood Burner Multi source Heat Pump Air source Heat Pump Ground source Heat Pump Water source Heat Pump Lake mats Ground loops Piles Bore holes EEB
Demonstration of basic PV/T applications PVT & Boiler PV/T as pre heat to cylinder via solar coil which feeds direct to hot water (passive) or acts as pre heat to combination boiler. PV/T as pre heat to cylinder via solar coil which is also fed by boiler via heating coil System boiler. ( also utilised if boiler does not take pre heat input)
Demonstration of basic PV/T applications
Demonstration of basic PV/T applications PV/T - Heat Pump - Boiler Bivalent System PV/T passive to tank or pre heat to water to water heat pump feeding cylinder. Cylinder feeding demand passive or via boiler
Demonstration of basic PV/T applications
Demonstration of basic PV/T applications PV/T - Heat Pump - Burner PV/T passive to cylinder or pre heat to heat pump. Additional cylinder inputs for wood/pellet boiler for back up.
Demonstration of basic PV/T applications
Demonstration of basic PV/T applications PV/T - Heat Pump - Ground Collectortwin cylinder PV/T passive to cylinder (prioritise DHW) pre heat to w2w heat pump Heat Pump feeding two separate tanks System dumping excess heat to ground System drawing energy from ground to maximise COP
Demonstration of basic PV/T applications
System pre-design processes 25
PV/T Redefining Renewables
Mounting applications On roof
Mounting applications On roof
Mounting applications In roof
Mounting applications In roof
Mounting applications Ground mounted
Mounting applications Ground mounted
Business Trend in the World
THANKS Hüseyin Gökalp (Solimpeks Solar Energy Corp.) Mehmet Armağan (Solimpeks Solar Energy Corp.) 34
Solimpeks Energy has been manufacturing solar thermal collector & thermosiphon systems & PVT Hybrid collectors since 1977 in 28.000sqm factory area with 750.000sqm production capacity by dedicated professionals who already boasted three generations of experience in the field of renewable energy. The high quality 150 different solar panels available from Solimpeks Energy have quickly made the company one of the largest exporters of renewable energy materials in Turkey. The company has to date been awarded 24 certificates such SOLARKEYMARK & SRCC USA,& INTA SPAIN & SP SWEDEN, CE & ISO9001 for quality produce and numerous awards for its environmentally friendly work. By focusing on R&D works, Solimpeks Energy has managed to produce one of the first hybrid collectors in the world and the company is now listed amongst the top ten companies of the kind in the world. Solimpeks Energy continues to grow and contribute to this valuable field by relentlessly expanding its production techniques. 35
36