Professional Report 

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Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results.

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

Professional Report 

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Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results.

System overview (annual values)

Total fuel and/or electrical energy consumption of the system [Etot]

13,932.5 kWh

Total energy consumption [Quse] 14,679.5 kWh

System performance (Quse / Etot) 1.05

Comfort demand Energy demand covered

Overview solar thermal energy (annual values)

Collector area 25.6 m²

Solar fraction total 31.4%

Solar fraction hot water [SFnHw] 64.1 %

Solar fraction building [SFnBd] 18.2 %

Total annual field yield 5,404.8 kWh

Collector field yield relating to gross area 211.1 kWh/m²/Year

Collector field yield relating to aperture area 230 kWh/m²/Year

Max. fuel savings 571.9 m³(Gas): [Natural gas H]

Max. energy savings 6,005.4 kWh

Max. reduction in CO2 emissions 1,390.8 kg

Solar fraction: fraction of solar energy to system [SFn]

Horizon line

Meteorological data-Overview

Average outdoor temperature 10.9 °C

Global irradiation, annual sum 1,206.7 kWh/m²

Diffuse irradiation, annual sum 594.9 kWh/m²

Professional Report 

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Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results.

Component overview (annual values)

Collector Termicol T10 SNumber of collectors   10

Number of arrays   2

Total area m² 25.6

Total aperture area m² 23.5

Total absorber area m² 24

Tilt angle (hor.=0°, vert.=90°) ° 45

Orientation (E=+90°, S=0°, W=-90°) ° 0

Collector field yield [Qsol] kWh 5,404.8

Irradiation onto collector area [Esol] kWh 32,239.5

Collector efficiency [Qsol / Esol] % 16.8

Direct irradiation after IAM kWh 16,999.8

Diffuse irradiation after IAM kWh 13,473.6

Building Multifamily house, normal building

Heated/air-conditioned living area m² 130.9

Heating setpoint temperature °C 19

Heating energy demand excluding DHW [Qdem] kWh 12,332.1

Specific heating energy demand excluding DHW [Qdem]

kWh/m² 94.2

Solar gain through windows kWh 13,005

Total energy losses kWh 29,679.8

Convector Floor heating Suelo radiante

Number of heating/cooling modules - 16

Power per heating module under standard conditions

W 850

Nominal inlet temperature °C 50

Nominal return temperature °C 40

Net energy from/to heating/cooling modules kWh 12,278.5

Professional Report 

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Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results.

Hot water demand Constant

Volume withdrawal/daily consumption l/d 129.7

Temperature setting °C 45

Energy demand [Qdem] kWh 1,877.5

Pump Solar loop pump Wilo-Star-ST 25/6

Circuit pressure drop bar 0.06

Flow rate l/h 940

Fuel and electrical energy consumption [Epar] kWh 31.5

Pump Space heating loop pump Pump, medium

Circuit pressure drop bar 0.006

Flow rate l/h 696.6

Fuel and electrical energy consumption [Epar] kWh 120.7

Storage tank Multifuncion 1000l combi universal tank

Volume l 1,000

Height m 2

Material   Steel

Insulation   Rigid PU foam

Thickness of insulation mm 80

Heat loss kWh 1,036.8

Connection losses kWh 818.5

Loop

Solar loop

Fluid mixture  

Fluid concentration % 33.3

Fluid domains volume l 40.7

Pressure on top of the circuit bar 4

Professional Report 

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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] %

Professional Report 

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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

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Solar thermal energy to the system [Qsol]

kWh 5405 348 465 640 533 490 444 470 450 425 529 379 232

Heat generator energy to the system (solar thermal energy not included) [Qaux]

kWh 11831 3171 2162 1168 161 4 0 0 0 0 101 1733 3331

Heat generator fuel and electrical energy consumption [Eaux]

kWh 13780 3669 2518 1379 197 6 0 0 0 0 125 2032 3854

Solar fraction: fraction of solar energy to system [SFn]

% 31.4 9.9 17.7 35.4 76.8 99.2 100 100 100 100 84 17.9 6.5

Total fuel and/or electrical energy consumption of the system [Etot]

kWh 13933 3702 2543 1397 203 9 2 2 2 2 130 2054 3886

Irradiation onto collector area [Esol]

kWh 32239 1317 1705 2689 3200 3645 3622 3969 3775 3256 2681 1397 983

Electrical energy consumption of pumps [Epar]

kWh 152 32 25 18 5 3 2 2 2 2 6 22 33

Heat loss to indoor room (including heat generator losses) [Qint]

kWh 4663 672 524 422 279 267 268 276 273 252 274 470 688

Heat loss to surroundings (without collector losses) [Qext]

kWh 48 2 3 4 5 5 5 5 5 4 5 3 2

Total energy consumption [Quse]

kWh 14680 3382 2471 1597 445 230 193 190 185 179 418 1964 3425

Professional Report 

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Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results.

CollectorDaily maximum temperature [ °C]

Energy flow diagram