SOLARGE

Hôtel du Golf de Valescure

St. Raphaël, France 

Hotel | 90 sqm installation

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Project summary · Technical description · Financing · Development · Downloads

Project Summary

Description

The hotel owner has made the choice to answer to its clientele environmental concerns, especially the Northern-European one and, also, tour operators more and more sensitive by these processes. This hotel includes a CSTS since its creation date in 1981.
In a sustainable development approach, the owners have decided to totally restore the CSTS for hot tap water production and swimming pool heating. The restoration has permit to reduce collectors surface due to the significant evolution of collectors efficiency since 20 years. The surface is passed from 130 sqm to 90 sqm of collectors perfectly roof integrated.



 


Building

Type of building

Hotel

Number of dwellings, floors

40 dwellings
3 floors

Year of construction

1981

Total effective area (heated)

not available 

Hot tap water consumption (measured/estimated)

1,350 m3/a (calculated)

Whole energy consumption for heating purpose after CSTS implementation

66,100 kWh/a (estimated)


System engineering

Year of construction of CSTS

2003

Type of collectors

Flat plate collectors

Thermal power

63 KWtherm.

Aperture area of collectors*)

90 m2

Buffer storage

4.5 m3

Hot tap water storage

1.5 m3

Total capacity of boilers with energy source

not available
(electric heat pump)

Type of hot tap water heating

Centralised

Type of heating system

Centralised


Costs

Total cost solar system

101,000 Euro

Cost of the CSTS/gross area of collectors

ca. 1,000 Euro/m2

Subsidies

48 %


Output

Output of solar heat**)

58,000 kWh/a

Reduction of final energy***)

68,000 kWh/a

CO2-emissions avoided

19 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

 

 


Mr. de Gaudemont, hotel manager: 

„I have wished involve the hotel in a global environmental approach that integrate water, energy and waste management. To follow such an approach, it is to take the lead over other hotels and thus to have a competitive advantage.“

 

 


Owner

Hôtel du Golf de Valescure
M. de Gaudemont
Avenue Paul l’Hermite
83700 Saint Raphaël, France
Phone: +33 494 528500
Fax: +33 494 824188
info(at)valescure.com
www.valescure.com 

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Technical description

 


Description of the CSTS

Year of construction of CSTS

2003

Thermal power

63 kWtherm.

Gross area of collectors

not available 

Aperture area of collectors

90 m2 

Type of collectors

Flat plate collectors

Type of assembly

Roof-integration

Orientation of collectors

South-East (-20°),

Inclination angle to horizon

30°

Freezing protection

Glycol

Overheating protection

Expansion vessel

Operation mode

Variable

Use of CSTS for

Hot tap water heating
Swimming pool heating

Buffer storage

4.5 m3

Hot tap water storage

1.5 m3

Control of backup-system/CSTS

Shared 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

5 m3

Specification (if necessary)

./.


Space heating system

Type of heating system

Centralised

Number of boilers

1

Total capacity (power output) of boilers

not available

Capacity of each boiler (year of construction)

not available

Energy source

Electric heat pump

Type of boiler system

./.


Type of operation

Operator of the CSTS system

not available

CSTS monitoring

Yes: solar radiation, output of solar heat.
The data observation is controlled by telephonic network and integrated with collectors regulation.)

Data accessible via internet

Yes

Scientific monitoring & follow up

Yes

Maintenance contract

No

Visualisation of the solar heat output

Yes: data are edited each month and compared with theoretical ones with tables and graphs


Yield of CSTS plant

Output of solar heat

58,000 kWh/a

Origin of data

Measured

Measuring point

Between storage and piping to taps

Reduction of final energy

68,000 kWh/a

Origin of data

Feasibilty study

Solar performance guarantee

No


Heat consumption

Whole energy consumption for heating purposes after CSTS implementation

66,000 kWh/a

Origin of data

Estimated

Energy used for heating of

Hot tap water heating and
swimming pool heating

Whole energy consumption for heating purposes before CSTS implementation

134,000 kWh/a

Total tap water consumption

not available

Hot tap water consumption

1,350 m3/a

Hot tap water temperature

55 °C

Cold water temperature

14 °C

 

 


Summary

CSTS was installed in 2003 and is composed of 90 sqm of flat plate collectors on roof-integration, with a south eastern orientation of 20° and an inclination of 30°. Hot tap water storage is composed of 2 solar tanks of 2500 l and 2000 l, and a back-up storage of 1500 l. CSTS was realised for hot tap water production and swimming pool heating.


 

 


Engineering company

ADRET
M. Roche
ValParc A, Av. de Rome - ZE Les Playes Jean Monet Sud
83500 La Seyne sur Mer, France
Phone: +33 494 10875-0
Fax: +33 494 10875-1
adret.mediterranee(at)adret.net
www.adret.net

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Financing and investment

Introduction

CSTS has cost 101,000 EUR including VAT with 40,000 EUR for solar material, 38,000 EUR for solar installation and 8,400 EUR for planning and engineering. This operation was subsidized at 48 % with 48,174 EUR by the ADEME and the regional council of PACA.


 


Financing of the CSTS

Form of financing

Purchase

Distribution in percentage

48 %


Costs of solar materials

Total cost of solar system

101,000 Euro


Detailed costs for

Collectors

40,000 Euro

Installation

38,000 Euro

Planning/Engineering

8,400 Euro

Others

./.


Operation costs of heating system

Increase of the operation cost after CSTS implementation

not available

 

 

Special note for subsidy systems in the partner country

ADEME subsidies: 24,987 EUR
Regional council subsidies: 23,187 EUR

 


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Development & experiences

Summary of experiences / Notices to the project performance

The hotel owner has chosen to answer to its clientele environmental concerns, especially the Northern-European one and, also, tour operators more and more sensitive by these processes. This hotel includes a CSTS since its creation date in 1981. In a sustainable development approach, the owners have decided to totally restore the CSTS for hot tap water production and swimming pool heating.

 


Experiences management

Experienced problems or failures?

Yes

Found solutions to these problems or failures?

Yes


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?

./.

 

 


Installer

A.S.I
M. Gerard CALVET
Parc d’activités de la Siagne – Rue Jean Mermoz
06210 Mandelieu la Napoule, France
Phone: +33 4 93 48 90 30
Fax: +33 4 93 48 90 31
solaireasi(at)wanadoo.fr

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Downloads

SOLARGE_goodpractice_fr_hotelgolfvalescure.pdf

this datasheet in printable PDF-format

0.9 M

Hotel-du-G-d-Valesc_scheme.pdf

the hydraulic scheme

78 K

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Photo gallery