Werner Weiss

AEE - Institute for Sustainable Technologies (AEE INTEC)

A-8200 Gleisdorf, Feldgasse 19

AUSTRIA

BUILDING INTEGRATION OF SOLAR COLLECTORS

SE SW

S

On Roof Installation

Flat plate collectors – ON ROOF

Source:Wagner &Co /ESTIF

On Roof Installation - Piping

Pipe penetration through the roof

Flat plate collectors – ROOF INTEGRATED

Flat plate collectors – ROOF INTEGRATED

Source: Conergy AG /ESTIF

Flat plate Collectors – Roof Integrated

Source: S.O.L.I.D., Austria

Flat plate Collectors – Roof Integrated

Source: S.O.L.I.D., Austria

Flat plate Collectors – Roof Integrated

Flat plate Collectors – Roof Integrated

Source: Teufel & Schwarz, Austria

Flat plate Collectors – Roof Integrated

Source: Teufel & Schwarz, Austria

Evacuated Tube Collectors – Building Integrated

Evacuated Tube Collectors – Building Integrated

Evacuated Tube Collectors – Building Integrated

Evacuated Tube Collectors – Building Integrated

Evacuated Tube Collectors – Building Integrated

Evacuated Tube Collectors on Flat Roofs

Source : Fraunhofer ISE

Evacuated Tube Collectors on Flat Roofs

Flat plate collectors – Installation on a flat roof

Source: Solution Solartechnik

Source: Himin, Jinan College of Transportation

Evacuated tube collectors

Flat plate collectors – Installation on a flat roof

Distance between the collector rows (calc)

a e

LH

D

Building Integration

Source: S.O.L.I.D.

Building Integration

Source: Himin

Facade Integration in a Historical Building Design Study

Pre-manufacturing

Source: gapsolution

Prefabricated Facade Elements for Retrofit

Prefabricated Facade Elements for Retrofit

Facade Integration of Solar Collectors

Multy functional façade

Arch. Praschl

Facade Integration of Solar Collectors

Meteonorm Data, Graz

0,0

0,2

0,4

0,6

0,8

1,0

1,2

1,4

1,6

1,8

2,0

20 40 60

Solar fraction [%]

Co

llec

tor

are

a [m

²/m

²]

DHW DHW and Space Heating

Necessary Increase of Collector Area compared

to Roof Installation (45°)

Test Façade 1

Timber construction

55 m² collector area, 3570 l space heating storage tank, 500 l dhw tank

Wall Construction

50 mm

160 mm

40 mm

Vapour barrier: sd = 0,8 m (airtight, open for vapour)

Temperature and humidity sensors

Inside

Outside

Timber construction: U-value of the wall

-0,06

-0,04

-0,02

0,00

0,02

0,04

0,06

0,08

0,10

0,12

0,14

0,16

0,18

static U-

value

Sep 01 Okt 01 Nov 01 Dez 01 Jan 02 Feb 02

[W/m

²k]

Monthly effective U-values

Test Façade 2: Massive Wall

25 cm highly porous brick

back wall of collector, wood, 6 mm

Temperature and humidity sensor

outside

Inside

Wall Construction

-0,10

-0,05

0,00

0,05

0,10

0,15

0,20

0,25

0,30

0,35

0,40

0,45

static U-value Nov 01 Dez 01 Jan 02 Feb 02

[W/m

²k]

Massive construction: U-value of the wall

Monthly effective U-values

Effect of Snow Reflection?

Irradiation, Snow Reflection

Meteonorm Data, Graz

+5% +20%

, Snow , Snow

Colored Absorbers ?

Survey amongst Architects

85

15

0

10

20

30

40

50

60

70

80

90

100

[%]

Any Colour Black

Colored Absorbers

Colored Absorbers

Simulation Results Colored Absorber, Solar Fraction

60,1 58,6

53,1

63,464,1

68,3

0

10

20

30

40

50

60

70

80

90

100

selektive

Schicht

Solarlack schwarz

eloxiert

grün Farblack rot Farblack blau

Pulverbesch.

Dec

ku

ng

sg

rad

[%

]

selektive Schicht

Solarlack

schwarz eloxiert

grün Farblack

rot Farblack

blau Pulverbesch.

Sola

r fr

action [

%]

Selective

coating

Solar

lacquer

Black

anodized

Green

lacquer

Red

lacquer

Blue

powder

coating

Selective coating

Solar lacquer

Black anodized

Green lacquer

Red lacquer

Blue powder coating

Colored Glass

Source: EPFL Laussanne, CH

Colored Glass

Source: EPFL Laussanne, CH

Colored Glass

Source: Maria C. Munari Probst, EPFL Laussanne, CH

Uncovered Metal Absorber

Source: Maria C. Munari Probst, EPFL Laussanne, CH

Source: Solution

Space Heating of Factory Buildings