SOLARGE

San Germano

San Germano Chisone (TO), Italy

House for elderly | 70 sqm installation

 


Project summary · Technical description · Financing · Development · Downloads

Project Summary

Description

The plant of San Germano was installed on the roof of an elderly house hosting about 100 people. The collector area is 70 sqm of CPC collectors, providing hot tap water. Together with the solar plant, a new condensing boiler was installed.
The management of the building started the project due to an accompaignment program by the Province of Turin, which provided technical assistance by experts and economical subsidies.
Detailed information on the solar gain of the system is basically available on the internet, but so far a modem is required. The monthly solar gain is published on the web page of the Province. It is also possible to observe the solar performance on a monitor in the entrance of the building.



 


Building

Type of building

House of elderly

Number of users/floors

98 users, 3 floors

Year of construction

1893

Total effective area (heated)

4,400 m2

Hot tap water consumption (measured/estimated)

4,500 m3/a (calculated)

Whole energy consumption for heating purpose after CSTS implementation

870,000 kWh/a


System engineering

Year of construction of CSTS

2004

Type of collectors

Vacuum tube collectors

Thermal power

49 kWtherm.

Aperture area of collectors*)

70 m2

Buffer storage

3 m3

Hot tap water storage

3 m3

Total capacity of boilers with energy source

545 kW, natural gas

Type of hot tap water heating

Centralised

Type of heating system

Centralised


Costs

Total cost solar system

72,850 Euro

Cost of the CSTS/gross area of collectors

934 Euro/m2

Subsidies

40 %


Output

Output of solar heat**)

54,000 kWh/a

Reduction of final energy***)

94,290 kWh/a

CO2-emissions avoided

19.5 t CO2/a

Solar performance guarantee

No


*) Aperture area = light transmitting area of the front glass
**) measured, between storage and piping to taps (solar system output)
***) related to the measured output mentioned before

 

 


Dorino Piras, Councillor responsible for environment – Province of Turin

"Our local promotion programs for renewable energies base on a complete support to the investors. It is essential to create subsidy schemes and inform the involved actors about their existence. Furthermore, technicians must be trained and supported, especially during the design and the installation of plants. Finally, an adequate monitoring plan should check the operation of each system."

 

 


Owner

Asilo del Vecchi
Giorgio Baret
via Carlo Alberto Tron, 27
San Germano Chisone, Italy
Phone: +39 0121 58855
asilo.sangermano(at)tpellice.it


Operator

see Owner

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Technical description

 


Description of the CSTS

Year of construction of CSTS

2004

Thermal power

49 kWtherm.

Gross area of collectors

78 m2

Aperture area of collectors

70 m2

Type of collectors

Vacuum tube collectors

Type of assembly

Roof top

Orientation of collectors

South (0°)

Inclination angle to horizon

45°

Freezing protection

Control system (Sistema aqua)

Overheating protection

Expansion vessel

Operation mode

Low flow

Use of CSTS for

Hot tap water heating, Space heating

Buffer storage

3 m3

Hot tap water storage

3 m3

Control of backup-system/CSTS

Separated control


Hot tap water system

Type of hot water heating

Centralised

Recirculation system

Yes

For decentralised systems:
The installation on the consumer site

./.

Size of storage for hot tap water

3 m3

Specification (if necessary)

Central


Space heating system

Type of heating system

Centralised

Number of boilers

3

Total capacity (power output) of boilers

545 kW

Capacity of each boiler (year of construction)

No.1: 220 kW (2000)
No.2: 200 kW (2004)
No.3: 125 kW (2000)

Energy source

Natural gas

Type of boiler system

Standard, Condensing


Type of operation

Operator of the CSTS system

Self-operation

CSTS monitoring

Yes
(Solar gain of the system & monitoring of the monthly collector circuit output)

Data accessible via internet

Yes

Scientific monitoring & follow up

No

Maintenance contract

Yes

Visualisation of the solar heat output

Yes
(PC-monitor showing the system performance installed in the entrance-hall)


Yield of CSTS plant

Output of solar heat

54,000 kWh/a

Origin of data

Design (Calculated)

Measuring point

Between collector and storage
(collector output)

Reduction of final energy

94,290 kWh/a

Origin of data

Design

Solar performance guarantee

No


Heat consumption

Whole energy consumption for heating purposes after CSTS implementation

870,000 kWh/a

Origin of data

Estimated (from standards)

Energy used for

Hot tap water heating

Whole energy consumption for heating purposes before CSTS implementation

870,000 kWh/a

Total tap water consumption

9,300 m3/a

Hot tap water consumption

4,500 m3/a

Hot tap water temperature

60 °C

Cold water temperature

10/15 °C

 

 


Summary

The centralised heating system provides heat for hot tap water and space heating.
Together with the solar plant, a new gas condensing boiler was installed. The existing boiler is used to cover the peak loads.





 


Planner

Tecnoalpi 2000 di Giorgio Rostan
Giorgio Rostan
Borgata Marchisa, 8
San Germano Chisone, Italy
Phone: +39 0121 582053
Fax: +39 0121 581900
tecnoalpi(at)ecosistec.it


Installer

Technical Impianti
Geom. Alberto Calandretti
Castel del Bosco
10060 Roure (TO), Italy
Phone: +39 0121 842010
Fax: +39 0121 842003
tecnoalpi(at)ecosistec.it


Producer

Paradigma s.r.l.
Jürgen Korff
?, Italy
Phone: +39 0465 648701
info(at)paradigmaitalia.it
www.paradigmaitalia.it

 

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Financing and investment

Introduction

The plant in San Germano is one of three plants financed by the Province of Turin in a demonstration program. The Province of Turin subsidised the plant by 40 %

 


Financing of the CSTS

Form of financing

Purchase, 60 % self financing

Distribution in percentage

40 %


Costs of solar materials

Total cost of solar system

72,850 Euro


Detailed costs for

Collectors

43,000 Euro

Elevation/mounting structure

3,300 Euro

Storage, heat exchanger

3,150 Euro

Back-up heater

./.

Control

2,900 Euro

Installation

13,500 Euro

Planning/Engineering

2,000 Euro

Others:
Expansion vessel and Piping insulation


5,000 Euro


Operation costs of heating system

Power cost for pumping

not available

Maintenance cost

not available

Monitoring cost

not available

Other operation cost

not available

Total operation cost

not available

or: Increase of the operation cost after CSTS implementation

not available

 

 

Special note for subsidy systems in the partner country

The Province of Turin subsidised part of the total investment costs in a demonstration programme.
Publications on the Province’s web site and presentations on various newspapers, newsletters and exhibitions

 

 


Addresses

Provincia di Torino
Silvio de Nigris
via Valleggio, 5
Torino, Italy
Phone: +39 011 8613883
Fax: +39 011 8613978
denigris(at)provincia.torino.it
www.provincia.torino.it/
ambiente/energia/

 

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Development & experiences

Quantitative aspects of the CSTS

The CSTS in San Germano was installed on an elderly house and subsidised by the Province of Turin. The collector field is designed for hot water preparation but serves also the heating system because of the existing hydraulic scheme. The plant (70 sqm of evacuated tubes) is running properly and being monitored monthly.

The performance of the system is available on the internet, on the province’s web-site:
http://www.provincia.torino.it/ambiente/energia/progetti/san_germano


Experiences management

Experienced problems or failures?

No

Found solutions to these problems or failures?

./.


Financial effects / project performance

Project economically efficient?

Yes

Fiscal or other financial effects?

No

Effects on rental fees?

No


Experiences technical staff

Experienced problems or failures?

Yes

Found solutions to these problems or failures?

Yes

 

 


Scientific monitoring of the CSTS

Ambiente Italia
Marco Calderoni
via Carlo Poerio, 39
Milano, Italy
Phone: +39 02 27744230
Fax: +39 02 27744222
marco.calderoni(at)ambienteitalia.it
www.ambienteitalia.it/solare.htm

Top of page Project summary · Technical description · Financing · Development · Downloads

Downloads

SOLARGE_goodpractice_it_sangermano.pdf

this datasheet in printable PDF-format

1.0 M

SOLARGE_goodpractice_it_sangermano_ITA.pdf

this datasheet in printable PDF-format (Italian language)

323 K