PVT Hybrid: module AL- series ak440, 22.01.2013, V1 1 PVT Hybrid, - PowerPoint PPT Presentation

PVT Hybrid: module AL- series ak440, 22.01.2013, V1 1

PVT Hybrid, the combined sollution PHOTOVOLTAIC + THERMAL 2

What is the PVT module Is an hybrid technology based on simultaneous production of : Electrical energy from a photovoltaic module + Thermal energy by cooling down cristalline cells 3

Conventional photovoltaic modules STC CONDITION T = 25 ° C I = 1000 W/m 2 REAL EUROPEAN CONDITION T > 40 ° C I = 1000 W/m 2 4

PVT increase electrical efficiency of conventional photovoltaic modules 5

PVT increase overall energy efficiency of conventional modules 6

Electrical Data 7

PVT Main features ♦ Hybrid PVT modules have the same dimensions of the reference photovoltaic modules (e.g. FTXXXAL is based on Aleo Solar S_79 black line) and they can be used in all combinations with the photovoltaic ones. SAME THICKNESS STANDARD MC4 CONNECTORS 8

PVT module electrical specification  PVT modules have same current of aleo S79 series  PVT modules have same voltage output of aleo S79 series but according to working temperature of heat recovery it can be diferrent from standard configuration at NOCT  PVT modules can be used in series with standard aleo S79 ( if not all the thermal power is needed) on the same MPPT tracker  All voltages are additive so also if a module is « differently cooled» the result in voltage/power will be proportional on the string to average temperature of the single module  Current of the module is directly related to irradiance and not appreciably affected by temperature 9

PVT module thermal specification  The thermal power of the module is additive (916 W th) and they can be connected in series and parallel to reach desired global power  Max reccomended number of modules in series is 4 optimal, 3-4 in series (nominal pressure drop is around 0,1 bar for each module, so max 0,4 bar for fluid circulation  Standard flow rate is 2-2,5 l/min  Hydraylical connections are in ½ inch brass material  Standard pressure of hydraylical circuit is 1,5-2 bar (max pressure of modules is 6 bar)  For piping can be used : copper , multilayer pipes with 90 ° C of max T specification , stainless steel  Longer durability of high quality materials used (copper) in a stronger technical solution  Reduced maintenance to hydraulic circuit due to lower maximum T 10

PVT module thermal specification  Max temperature that can be reached is 90-92 ° C, no problem with boiling point and no damages at stagnation. System with forced circulation of fluid  Typical hot water production ratio 70 l/m² in a day (in winter @ 20 -30 ° C – in summer @ 50-80 ° C)  Pay attention to heat exchanger into the tank : High surface is needed (external plate heat exchanger is prefferable)  The optimal surface for heating swimming pool is 60% of pool surface  Mounting system is the same as in pv module  External temperature probe, for measuring max T that the module can reach, for differential T controller regulation  PVT cooling-thermal circuit is compatible with all standard antifreeze mixtures and can work with : • Glycol-based antifreeze mixtures family (ethylene or propylene glycol) • Our property antifreeze mixture (based on ethanol: less energy losses due to low viscosity, no toxicity, better for environment) 11

PVT module main advantages  Increased electrical performance  Longer durability (materials work at low T)  Perfect aestetical and functional integration of two technologys : PV + TH  Lower mounting structures and mounting time  No stagnation effects, no corrosion at max T  Defrost capablity  Lower costs for integrated technology  Lower manitenance  Better environment (no toxicity, lower footprint) 12

PVT application PVT plant : 9,50kWp Module : FT_250AL Architectural integration 13

PVT application PVT plant : 3,30kWp Module : FT_165Ph Architectural integration 14

PVT application  Public and private swimming pools (electricity + heating )  Generating hot water + electricity for residential/commercial buildings (hospitals, sport buildings, private houses, hotels etc)  In combination with heat pumps (new Aleo-Fototherm kit) ground floor heating for residential, commercial buildings  Ground floor heating for agricultural buildings (pigs, chickens)  Greenhouses for hydroponic growing of vegetables  Generating hot water + electricity for several industrial processes (juices production, milk pasteurization treatment, cheese production, textiles etc)  Car washing plants, laundry shops 15