SOLAR THERMAL ENERGY PLANT APPLIED TOSOLAR THERMAL ENERGY PLANT APPLIED TOSOLAR THERMAL ENERGY PLANT APPLIED TO SOLAR THERMAL ENERGY PLANT APPLIED TO
DISTRICT HEATINGDISTRICT HEATINGS C GS C G
Ing. Franco Buscaroli
Ing. Roberto Amidei
1Graz, March 17th, 2011
SDH plant in Italy
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
2Agenda
Solar Radiation
Comparing to most of European Countries, Italy has a high solar exposureand radiation….
3
Capacità solare termica per 1000 abitanti nel 2009
Solar Thermal in EuropeSolar Termal Capacity per 1000 persons in 2009
62
611,
7
500
600
700
ab]
3625
2,4
110,
45,
4 ,1 ,8 2 7 6 3 3 1 4 7 6
200
300
400
[kW
ht/1
000
1 75 61,
53,
34,2
32,7
31,6
29,3
28,3
28,1
23,4
21,7
21,6
19 13,5
9,4
5,4
4,7
3,7
3,7
3,4
2,6
1,1
1
0
100
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Fonte:EurObserv’er 2010
R
An average of 23,4 kWht of Thermal Capacity per 1.000 persons has beend d i It l b t li ti li it d t d ti
4
recorded in Italy… but applications are limited to domestic use.
Applications of SDH in Italy
In Italy there are no experiences in Solar Thermal Energy Plants applied
to D.H.
AIRU and Ambiente Italia take part to SDH– Take off
5
Integrated Energy Systems
Solar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
6Agenda
Applications of SDH in Italy
By communication and dissemination of the project “SDH – takeoff” in
Italy, some feasibilty studies have been activated linked to applications of
Solar District Heating, and other projects are currently planning.
7
Applications of SDH in Italy
Main topics of the “italian” approach to SDH technology should be
summerized as follows:
Use of the Solar Thermal Plants as integrative heat production in
Integrated Energy Systems;
Requirements to operate within systems the temperature of which
is greater than or equal to 90°C out and 55 – 60°C in;
Strong stakeholders’ attention to the integration of the plants into
the landscape;p ;
Present incentive system privileges the use of the “renewable
electric” sources and not the Thermal.
8
electric sources and not the Thermal.
Applications of SDH in Italy
The most in–progress initiatives are now proposed by:
HERA – Ferrara
GES – Pomarance
To develop these projects, a first technical cooperation has been
activated with italian providers.
9
Applications in Italy
HER HERA -Ferrara
GES -Pomarance
10
Pomarance
Integrated Energy Systems
Solar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
11Agenda
The District Heating in Ferrara – Present and Future
The City of Ferrara is served with a District Heating System mainly fed withrenewable sources: the “Geothermal Energy Site” in Casaglia and the“Waste-To-Energy Plant”.
Geothermal Site and WTEWest Ferrara
Main Pipes for heat transport
Municipality of Ferrara
District Heating Users
Development AreaEast Ferrara
12
Polo energie rinnovabili
New Links
Project Outline
The general plan of the new production Area, working with renewable( ll d “P l E i Ri bili”) l t d i t F isources, (so-called “Polo Energie Rinnovabili”) located in eastern Ferrara, is:
Solar District Heating (SDH)g ( )about 1 MWt as a primary source of thermal energy (base-load) for the districtheating network
New Geothermal Source2 Extraction Wells + 1 for re-introducing the fluid in the ground (total 14 MWt)
ORC System for electric power production1 MWe generatorg
2+2 thermal energy storages
13
1 Back-up Thermal Station3 boilers (each of them of 14 MWt)
Integrated Energy System – Development Suggestion for the City of Ferrara
Geothermal Energy Plant 60 °C
Users
90 °C
Th.En. from GEO
Back-up Stations
Methane
90 °C
Th E Th ETh EnCHGas
CH4
Th.En. Th.En. Th.En.Th.En.
Thermal Energy Storages
CH4
Back-up Station
Solar District HeatingEl En From
Storages
Th. En. from WTEWTE
New Geothermal Source ORC U it
El.En. From ORC to the
NetworkTh. En.
14
El.En. from WTE
to the Network- Polo delle energie rinnovabili -
ORC Unit
POLO “CANALBIANCO”“POLO EST”
Size of the Solar Thermal Area
Solar Thermal Energy
1.200 m2 on the buildings’ roof
Size of the Solar Thermal Area
Panels’ Tilt Angle 35°-45°
Horizontal Surface Radiation: 1 400 kWh/m2 yearHorizontal Surface Radiation: 1.400 kWh/m2-year
Tin = 90°C; Tout = 60°C
H24 Working Thermal Energy Storages
15
Solar Thermal Energy
What’s Solar Thermal Energy Production ?gy
Available Surfaces
16
Awaited Results
City of FerraraCity of Ferrara
Polo Ovest “C. Bianco”
Geothermal Energy Polo EstGeothermal EnergyWTE recovery Polo Energie Rinnovabili
Served Volume 9 mln m3
With the development of an Integrated Energy System in the whole urban territor, is forecast:
Th l E f S l Pl t 1 GWt ?Thermal Energy from Solar Plant: 1 GWt ?
Thermal Energy from Geothermal Plant: 163 GWhEnergy from
Renewable Sources
91%
17
Thermal Energy from WTE: 99 GWh 91%
Integrated Energy Systems
Solar Thermal PlantSolar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
18Agenda
Applications in Italy
Pomarance
Gabbro
Serrazzano
Lustignano
19
Integrated Energy Systems
Solar Thermal PlantSolar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
20Agenda
Total volume served: 62 000 mc 218 users
Serrazzano D.H. (Pomarance)
Total volume served: 62.000 mc 218 users
Thermal Power: 2.400 kWt
Thermal energy demand: 2.330 MWht/year
Tin = 80°C; Tout = 55 - 60°C
Thermal season
Tin 80 C; Tout 55 60 C
Et demand
21
15/10 15/05Service extensible to the whole year
Serrazzano
GEONew solar
plant
22
plant
Serrazzano
S.T. area dimensions
160 mq with 60° inclination without shadow
50 th l l t f50 mq on thermal plant roof
Horizontal surface radiation: 1.500 kWh/ mq/y
Energy storage is planned
60°
23
60°
Integrated Energy System – Developement Design Serrazzano
55 – 60 °C
users
80°C
55 60 C
80°C
Th E Th EnTh.En Th.En
Solar District HeatingEnergy storage
Geothermal
24
Integrated Energy Systems
Solar Thermal PlantSolar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
25Agenda
Lustignano
Total volume served: : 25.000 mc 88 userTotal volume served: : 25.000 mc 88 user
Thermal Power: 850 kWt
Thermal Energy: 780 MWth/year
Tin = 80°C; Tout = 60°Cin out
energia erogata (MWh)
700
800 Thermal Season
400
500
600T.E. demand
100
200
300
energia erogata (KWh)
26
0
data
18‐ott
22‐ott
26‐ott
30‐ott
03‐nov
07‐nov
11‐nov
15‐nov
19‐nov
23‐nov
27‐nov
01‐dic
05‐dic
09‐dic
13‐dic
17‐dic
21‐dic
25‐dic
29‐dic
02‐gen
06‐gen
10‐gen
14‐gen
18‐gen
22‐gen
26‐gen
30‐gen
03‐feb
07‐feb
11‐feb
15‐feb
19‐feb
23‐feb
27‐feb
03‐m
ar
07‐m
ar
11‐m
ar
15‐m
ar
19‐m
ar
23‐m
ar
27‐m
ar
31‐m
ar
04‐apr
08‐apr
12‐apr
16‐apr
20‐apr
24‐apr
28‐apr
02‐m
ag
06‐m
ag
10‐m
ag
14‐m
ag
15/10 15/05Service extensible to the whole
Lustignano
GEOsolarsolar
27
Lustignano
S T area dimensionsS.T. area dimensions
280 mq with 60° inclination without shadow
30 mq on thermal plant roof
Horizontal surface radiation: 1.500 kWh/ mq/yHorizontal surface radiation: 1.500 kWh/ mq/y
60°
28
60
Integrated Energy System – Developement Design Lustignano
55 – 60 °C
users
80°C
55 60 C
80 C
Th E Th EnGeothermal Plant Th.En Th.EnGeothermal Plant
Solar District HeatingThermal Energy
StoragesGeothermal Plant
29
Integrated Energy Systems
Solar Thermal PlantSolar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
30Agenda
Gabbro
Total Volume Served: 500 000 mc 1 400 usersTotal Volume Served: 500.000 mc 1.400 users
Thermal Power: 16.900 kWt
Thermal energy demand: 14.850 MWht/year
Tin = 120°C; Tout = 70°CTin 120 C; Tout 70 C
The technological Goal!!!!g
If T> 120 °C we’ll work on the input pipe
If 80 < T < 120 °C we’ll work on the output pipe
If T < 70 °C we won’t do anything!!
31
f y g
Integrated Energy System – Development Suggestion for Gabbro
Size of the Solar Thermal Area
300 mq , roof of the “Gabbro” station extendable
300 mq roof of the “Ex mattatoio” Station300 mq, roof of the Ex-mattatoio Station
Horizontal Surface Radiation: 1.500 kWh/mq -year70°C
Thermal Energy Storages are provided.70°C
120 °C
120°C
32
70 °C
“Vacuum” Technology ?
Integrated Energy System – Development Suggestion for Gabbro
UsersInput Pipe
120°C
Output Pipe70°C
Th. En. Th. En.
Geothermal Plant
Solar District HeatingThermal Energy
StoragesGeothermal Plant
33
g
Integrated Energy Systems
Solar Thermal PlantSolar Thermal Plant
Practical Applications in ItalyFerrara
Pomarance:
Serrazzano
Lustignano
Gabbro
Other project coming …
34Agenda
Other project coming …
Previous examples are the first feasibility studies of S.D.H. applications in Italy.p y pp y
But not the only ones…….
Other Companies are interested to develop this technology applicated to its
services by some feasibility studies.
35