1. Professional Report 1/ V5.7.12.15251 / 13.12.2011 / 13:57:48 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Proyecto8bd: Agua caliente. 200 litros y 2 T8 S Location of the system Budaörs Longitude: 18.967° Latitude: 47.45° Elevation: 142 m This report has been created by: Gustavo Martín Sicardo P.I. La Isla C/Río Viejo 39 41703 Dos Hermanas (Sevilla) Map section System overview (annual values) Total fuel and/or electrical energy consumption of the system [Etot] 2,128.2 kWh Total energy consumption [Quse]2,056 kWh System performance (Quse / Etot)0.97 Comfort demandEnergy demand covered

2. Professional Report 2/ V5.7.12.15251 / 13.12.2011 / 13:57:48 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Overview solar thermal energy (annual values) Collector area4.1 m² Solar fraction total63.3% Total annual field yield1,910.6 kWh Collector field yield relating to gross area461.5 kWh/m²/Year Collector field yield relating to aperture area505.5 kWh/m²/Year Max. fuel savings202.2 m³(Gas): [Natural gas H] Max. energy savings2,122.9 kWh Max. reduction in CO2 emissions491.6 kg Solar fraction: fraction of solar energy to system [SFn] Horizon line Meteorological data-Overview Average outdoor temperature10.9 °C Global irradiation, annual sum1,206.9 kWh/m² Diffuse irradiation, annual sum595 kWh/m²

3. Professional Report 3/ V5.7.12.15251 / 13.12.2011 / 13:57:48 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. CollectorTermicol T8S Data Source Number of collectors 2 Number of arrays 1 Total aream²4.14 Total aperture aream²3.78 Total absorber aream²3.84 Tilt angle (hor.=0°, vert.=90°)°40 Orientation (E=+90°, S=0°, W=-90°)°0 Collector field yield [Qsol]kWh1,910.6 Irradiation onto collector area [Esol]kWh5,229.3 Collector efficiency [Qsol / Esol]%36.5 Direct irradiation after IAMkWh2,753.7 Diffuse irradiation after IAMkWh2,188.1 Hot water demandConstant Volume withdrawal/daily consumptionl/d150 Temperature setting°C45 Energy demand [Qdem]kWh2,172.1 Pump Solar loop pumpWilo-Star-ST 25/6 Circuit pressure dropbar0.012 Flow ratel/h151.2 Fuel and electrical energy consumption [Epar]kWh58 Storage tank 3200l potable water universal tank Volumel200 Heightm1.2 Material Stainless steel Insulation Rigid PU foam Thickness of insulationmm80 Heat losskWh246.7 Connection losseskWh137.7 Loop Solar loop Fluid mixture Propilenglicol Fluid concentration%33.3 Fluid domains volumel18.1 Pressure on top of the circuitbar4 Component overview (annual values)

4. Professional Report 4/ V5.7.12.15251 / 13.12.2011 / 13:57:48 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Solar thermal energy to the system [Qsol]kWh Heat generator energy to the system (solar thermal energy not included) [Qaux]kWh Solar fraction: fraction of solar energy to system [SFn]%

5. Professional Report 5/ V5.7.12.15251 / 13.12.2011 / 13:57:48 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Total fuel and/or electrical energy consumption of the system [Etot]kWh YearJanFebMarAprMayJunJulAugSepOctNovDec Solar thermal energy to the system [Qsol] kWh19116997152199223 2352201901738049 Heat generator energy to the system (solar thermal energy not included) [Qaux] kWh110817813811771513228335173149186 Heat generator fuel and electrical energy consumption [Eaux] kWh2070302244215145114766679105148262314 Solar fraction: fraction of solar energy to system [SFn] %63.32841.356.673.681.387.389.48778.970.23521 Total fuel and/or electrical energy consumption of the system [Etot] kWh2128304247220151120827385111154265316 Irradiation onto collector area [Esol] kWh5229205269431523603604659619524423219153 Electrical energy consumption of pumps [Epar] kWh58234667765532 Heat loss to indoor room (including heat generator losses) [Qint] kWh1755172152157141138121123129131147167177 Heat loss to surroundings (without collector losses) [Qext] kWh22710141924 25232221118 Total energy consumption [Quse] kWh2056192178196184180162158153148160165182

6. Professional Report 6/ V5.7.12.15251 / 13.12.2011 / 13:57:48 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Collector Daily maximum temperature [ °C] Energy flow diagram