SOLARGE

Surieux

Echirolles, France

Multi-family house (three buildings) | 689 sqm installation

 


Project summary · Technical description · Financing · Development · Downloads

Project Summary

Description

The Isère department Public Housing Office (OPAC 38) manages public housing in the department, including more than 20,000 public housing units. Its main mission is to control the “rent + utilities” binary.
The Office decided to rehabilitate 505 dwellings in the Surieux housing complex using a holistic energy approach intended also to demonstrate the feasibility of alternative energy solutions in communal housing. To reduce tenants‘ rates bills, a widespread programme to control energy use was implemented by the Office in 1998. This programme includes the complete replacement of insulation and joinery, installation of double-glazing everywhere and the systematic use of energy-saving compact fluorescent light bulbs. The solar installation includes 705 sqm solar thermal collectors for producing hot water.



 


Building

Type of building

Multi-family-house

Number of dwellings, floors

505 dwellings
5 to 11 floors

Year of construction

1973

Total effective area (heated)

not available 

Hot tap water consumption (measured/estimated)

18,800 m3/a (measured)

Whole energy consumption for heating purpose after CSTS implementation

1,363,000 kWh/a


System engineering

Year of construction of CSTS

1999

Type of collectors

Flat plate collectors

Thermal power

480 kWtherm.

Aperture area of collectors*)

689 m2

Buffer storage

./.

Hot tap water storage

42.0 m3

Total capacity of boilers with energy source

766,000
(District heating)

Type of hot tap water heating

Centralised

Type of heating system

Centralised


Costs

Total cost solar system

1,067,000 Euro

Cost of the CSTS/gross area of collectors

ca. 1,430 Euro/m2

Subsidies

50 %


Output

Output of solar heat**)

407,000 kWh/a

Reduction of final energy***)

622,000 kWh/a

CO2-emissions avoided

131 t CO2/a

Solar performance guarantee

Yes


*) 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

 

 


Mr. Gibert, OPAC 38 / Sustainable development and Europe Manager:

„The main mission of the OPAC 38 is to control the “rent + utilities” binary. Moreover, CSTS has contributed to change the site image. Indeed, inhabitants are proud of these innovative and efficient installations.“

 

 


Owner and Operator

OPAC 38
Mr. Gibert
47, avenue Marie Reynoard – BP 2549
38035 Grenoble, France
Phone: +33 4 76205140
Fax: +33 4 76094346
michel.gibert(at)opac38.fr
www.opac38.fr

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Technical description

 


Description of the CSTS

Year of construction of CSTS

1999

Thermal power

480 kWtherm.

Gross area of collectors

ca. 745 m2

Aperture area of collectors

689 m2 

Type of collectors

Flat plate collectors

Type of assembly

On flat roof

Orientation of collectors

South (0°),

Inclination angle to horizon

43°

Freezing protection

Glycol

Overheating protection

Expansion vessel

Operation mode

Variable

Use of CSTS for

Hot tap water heating

Buffer storage

./.

Hot tap water storage

42.0

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

42.0 m3

Specification (if necessary)

./.


Space heating system

Type of heating system

Centralised

Number of boilers

1

Total capacity (power output) of boilers

766,000 kW

Capacity of each boiler (year of construction)

766,000 kW (1960)

Energy source

District heating

Type of boiler system

./.


Type of operation

Operator of the CSTS system

ESCO

CSTS monitoring

Yes: solar radiation, output of solar heat, total water consumption, pression. Monitoring is done from afar by telephonic network and data are stored and edited every month for each project partner. The ASDER Association supervises these data.

Data accessible via internet

Yes

Scientific monitoring & follow up

Yes

Maintenance contract

Yes, twice a year

Visualisation of the solar heat output

Yes: data are edited each month and sent to all partners with data sheets and graphs.


Yield of CSTS plant

Output of solar heat

407,000 kWh/a

Origin of data

Measured

Measuring point

Between storage and piping to taps

Reduction of final energy

622,000 kWh/a

Origin of data

Measurements

Solar performance guarantee

Yes


Heat consumption

Whole energy consumption for heating purposes after CSTS implementation

1,363,000 kWh/a

Origin of data

Measured

Energy used for heating of

Hot tap water heating

Whole energy consumption for heating purposes before CSTS implementation

1,985,000 kWh/a

Total tap water consumption

not available

Hot tap water consumption

18,800 m3/a

Hot tap water temperature

55 °C

Cold water temperature

11 °C

 

 


Summary

689 sqm of flat plate solar collector have been installed on the roofs of the three residential complexes, facing south and with an inclination of 43°. The storage volume is 42 cbm, and the entire system is connected to the district heating system. The solar tanks have been installed in the three heating substations.


 

 


Engineering company

G.T.I
Mr. Rolland
141, rue des Alliés
Grenoble, France
Phone: +33 4 76701262
Fax: +33 4 76218666

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Financing and investment

Introduction

The total cost of this operation was of 1,067,000 EUR. TTC subsidized at 50 % of the cost excluding VAT by European Union with 260,000 EUR, by the Rhône-Alpes Regional Council with 244,000 EUR and by the Isère Department with 30,500 EUR.


 


Financing of the CSTS

Form of financing

Purchase

Distribution in percentage

50 %


Costs of solar materials

Total cost of solar system

1,067,000 Euro

Detailed costs

not available


Operation costs of heating system

Maintenance cost

11,000 Euro

Increase of the operation cost after CSTS implementation

not available

 

 

Special note for subsidy systems in the partner country

· European Union:
260,000 EUR
· Rhône-Alpes Regional Council: 244,000 EUR
· Isère Department:
30,500 EUR

 


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Development & experiences

Summary of experiences / Notices to the project performance

To reduce tenants‘ rates bills, a widespread programme to control energy use was implemented by the Office in 1998. To achieve this goal, the OPAC 38, has looked for new financing to cover further rehabilitation operations for buildings included in the heritage improvement plan.
This project was realised in the framework of the Agenda 21 and other projects will follow by respecting a strategic axis linked to sustainable development.

 


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?

Yes


Experiences technical staff

Experienced problems or failures?

No

Found solutions to these problems or failures?

./.

 

 

Architect

DUO
30, quai de Grenoble
Grenoble, France
Phone: +33 4 76853320
Fax: +33 4 76509374


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Downloads

SOLARGE_goodpractice_fr_surieux.pdf

this datasheet in printable PDF-format

785 K

Surieux_scheme.pdf

the hydraulic scheme

673 K