next generation of small solar thermal systems
TRANSCRIPT
![Page 1: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/1.jpg)
Next Generation of Small Solar Thermal Systems
Peter Vogelsanger
Institut für Solartechnik SPF
HSR Hochschule für Technik Rapperswil
www.solarenergy.ch
![Page 2: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/2.jpg)
Countries
AustriaDenmarkFranceGermanyGreeceItalyNorwayPortugalSpainSwedenSwitzerlandThe Netherlands
![Page 3: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/3.jpg)
Contents
today’s technology
promising system concepts
theoretical evaluation
on-site evaluation
![Page 4: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/4.jpg)
System cost / per capita installed
solar water heating
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Greece Italy Spain Portugal0
2
4
6
8
10
12
specific system costs [EUR/Wth] per capita total installed power capacity annually [Wth/(p a)]
spec
ific
syst
em c
osts
[EU
R/W
th]
per c
apita
tota
l ins
talle
d po
wer
cap
acit y
NEGST WP1.D1, today’s technology
![Page 5: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/5.jpg)
System cost / per capita installed
combisystems
0.0
0.5
1.0
1.5
2.0
2.5
Austria Germany Denmark Switzerland0
2
4
6
8
10
12
14
16
specific system costs [EUR/Wth] per capita total installed power capacity annually [Wth/(p a)]
per c
apita
tota
l ins
talle
d po
wer
cap
acity
[Wth
/(P a
)]
NEGST WP1.D1, today’s technology
![Page 6: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/6.jpg)
Development
0
1000
2000
3000
4000
5000
6000
7000
1982 1987 1992 1997 2002
EUR
0
100
200
300
400
500
600 1000 m2 / a
System Cost [EUR]
Glazed solar collectorsinstalled [1000 m2/a]
Germany, Stiftung Warentest and ESTIF NEGST WP1.D1, today’s technology
![Page 7: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/7.jpg)
Type of SDHW systems
NEGST WP1.D1, today’s technology
0
20
40
60
80
100
120
140
160
180
Austria
Denmark
France
German
yGree
ce Italy
Norway
Portug
alSpa
inSwed
enSwitz
erlan
d
The N
etherl
ands
per capita total installed power[Wth pc]
Wth pc
![Page 8: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/8.jpg)
Type of SDHW systems
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Austria
Denmark
France
German
yGree
ce Italy
Portug
al
Spain
Switzerl
and
The N
etherl
ands
Share of integrated collector storageShare of thermosyphon systemsShare of pumped systems
NEGST WP1.D1, today’s technology
![Page 9: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/9.jpg)
Share by application
0%
20%
40%
60%
80%
100%
Austria
Denmark
France
German
yGree
ce Italy
Portug
alSpa
inSwed
enSwitz
erlan
dThe
Neth
erlan
ds
Share of glazed collectors for domestic hot water heating of other dwellingsShare of glazed collectors for domestic hot water heating of multifamily housesShare of glazed collectors for domestic hot water heating of single family houses
NEGST WP1.D1, today’s technology
![Page 10: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/10.jpg)
Drainback system for Southern European countries
NEGST WP1.D2, WP1.E3a, WP1.E3b, theoretical evaluation ; © Wagner (D)
![Page 11: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/11.jpg)
More Information
NEGST (WP1): http://www.swt-technologie.de/html/public_deliverables_wp1.html
![Page 12: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/12.jpg)
System with water filled collector loop
solar water heater solar combisystem (one of several possibilities)
NEGST WP1.D2, WP1.E1, WP1.E2, theoretical evaluation ; © Paradigma (D)
![Page 13: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/13.jpg)
IEA SH&C Task 14 ADVANCED ACTIVE SOLAR ENERGY SYSTEMS, “Dream System” 1996
IEA SH&C Task 14 advanced solar active energy systems; Thermodynamics Solar (CAN)
![Page 14: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/14.jpg)
Reference system for solar water heating (Germany)
NEGST WP1.D2 (WP1.E4), theoretical evaluation
![Page 15: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/15.jpg)
Compact Heating Unit for Solar Domestic Hot Water Preparation
NEGST WP1.D2 , WP1.E4, theoretical evaluation; © Vaillant (D)
![Page 16: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/16.jpg)
Compact Heating Unit for Solar Domestic Hot Water Preparation
Conventional store
Stratified store
NEGST WP1.D2, WP1.E4, theoretical evaluation ; © Vaillant (D)
![Page 17: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/17.jpg)
Combisystem with non-pressurized store and polymer collectors
NEGST WP1.D2, theoretical evaluation ; © Solarnor (N)
![Page 18: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/18.jpg)
DFFC concept (direct feed flow controlled)
1
2
4
3space heating (radiators)
Saving function
-5.0%
-4.0%
-3.0%
-2.0%
-1.0%
0.0%
1.0%
2.0%
3.0%
4.0%
13 15 18 20 23 25 28 30 33 35 38 40Space heating pipe heat loss coefficent [W/m2.K]
Sav
ing
func
tion
[%]
solar collector
tank (non-pressurized)
fuel savings, relative to reference
auxiliary heater (condensing gas boiler)
118 196 275
heat transfer capacity rate of the heating system(radiators or floor heating, W/K)
W/KW/KW/K
reference heating system heat transfer capacity rate
DFFC
solar referencesystem
IEA SH&C Task 32, SPF, www.solarenergy.ch, Martino Poretti, DFFC concept
![Page 19: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/19.jpg)
concepts / specific features
specific feature
concept stan
dard
izat
ion
pref
abric
atio
n
sim
plifi
catio
n an
d re
duct
ion
adap
tatio
n
SDHW or combisystem with water filled collector loop (1, 2) x drainback SDHW system (3) x x x compact SDHW and gas heating unit (4) x x combisystem with integrated pellets or gas auxiliary (5, 6) x x combisystem with non-pressurized store and polymer collector (7) x x x integrated collector storage (8) x x x xcombisystem for Southern European climate (9) x
NEGST WP1.D2, theoretical evaluation
![Page 20: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/20.jpg)
Integrated collector storage (ICS)
NEGST WP1.D2, theoretical evaluation ; © ECOFYS (NL)
![Page 21: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/21.jpg)
Solar system for combined domestic hot water, space and pool heating for Southern European climates
max. pool temperature: 32°C
0.0
5.0
10.0
15.0
20.0
0.4 0.5 0.6 0.7 0.8 0.9 1
Natural gas cost (€/m3)
Yea
rs
Ref (DHW) - 500 €/m2Ref (DHW) - 750 €/m2Eval (DHW+SH+PH) - 500 €/m2Eval (DHW+SH+PH) -750 €/m2(DHW+SH) - 500 €/m2(DHW+SH) - 750 €/m2
max. pool temperature: 26°C
0.0
5.0
10.0
15.0
20.0
0.4 0.5 0.6 0.7 0.8 0.9 1
Natural gas cost (€/m3)
Yea
rs
Ref (DHW) - 500 €/m2Ref (DHW) - 750 €/m2Eval (DHW+SH+PH) - 500 €/m2Eval (DHW+SH+PH) -750 €/m2(DHW+SH) - 500 €/m2(DHW+SH) - 750 €/m2
NEGST WP1.D2, WP1.E9, WP1.E9-2, theoretical evaluation
![Page 22: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/22.jpg)
Compact and modular solar combisystem with integrated pellet boiler
NEGST WP1.D2, WP1.E5, theoretical evaluation
![Page 23: Next Generation of Small Solar Thermal Systems](https://reader031.vdocuments.us/reader031/viewer/2022020702/61fb1efa2e268c58cd5a64ab/html5/thumbnails/23.jpg)
Compact and modular solar combisystem with integrated gas boiler
Solar Store Unit Technical Unit
HW
CW
Space heating
Solar loop
Boiler
S
S
M
Radiators Floor heating
SS
Domestic hot water
NEGST WP1.D2, WP1.E6, theoretical evaluation