SOLARGE

Club Tennis Sabadell

Sabadell, Catalonia, Spain

Sports Centre | 380 sqm installation

 

 


Project summary · Technical description · Financing · Development · Downloads

Project Summary

Description
The Sabadell Tennis Club decided to reduce their energy bill by installing a solar thermal system. Pasch S. A. has offered to the club's owners an ESCo project where Pasch would own the CSTS to be installed in the club for a period of time and would be in charge of its exploitation and its maintenance while selling the end user green energy at a price agreed in a contract. After that period of time ends, the CSTS will totally belong to the end user.
The club's owners agreed with the offer. Then, the ESCo (Pasch y Cia) contracted Aiguasol Enginyeria for the design of the solar plant, and the system was installed by Fototerm. The duration of the contract is 12 years, and at the end the plant becomes property of the end user, without any payment
for this concept. This is the first time that in Spain is realised an activity of this kind in the solar thermal field. The system covers part of the hot water demand and gives support to the
swimming pool.


 


Building

Type of building

Sports centre

Number of users / dwellings, floors

2,500 users

Year of construction

1958

Total effective area (heated)

not available 

Hot tap water consumption (measured/estimated)

not available

Whole energy consumption for heating purpose after CSTS implementation

428,698 kWh/a


System engineering

Year of construction of CSTS

2005

Type of collectors

Flat plate collectors

Thermal power

244 kWtherm.

Aperture area of collectors*)

348 m2

Buffer storage

12 m3

Hot tap water storage

5 m3

Total capacity of boilers with energy source

not available

Type of hot tap water heating

Centralised

Type of heating system

./.


Costs

Total cost solar system

198,643 Euro

Cost of the CSTS / gross area of collectors

523 Euro/m2

Subsidies

not available


Output

Output of solar heat**)

211,374 kWh/a

Reduction of final energy***)

301,963 kWh/a

CO2-emissions avoided

70 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

 

 


Miquel Rius, ESCO PASCH Y CIA., S. A.:

"PASCH has exploited this installation for more than two years and the experience is very satisfactory. Last year, PASCH has promoted another ESCo installation bigger than this one and they want to develop more next years."

 

 


Owner

Tennis Club Sabadell
Ricard Granados
Av. Prat de la Riba 91
08206 Sabadell (Barcelona), Spain
Phone: +34 93 726 45 00
recepcio(at)cts.cat
www.clubtennissabadell.com


Operator

ESCO PASCH Y CIA., S. A.
Miguel Rius
Gran Via de les Corts Catalanes, 645
08010, Barcelona
Phone: +34 93 481 71 50
fax: +34 93 412 54 77
info(at)barcelona.pasch.es
www.pasch.es

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Technical description

 


Description of the CSTS

Year of construction of CSTS

2005

Thermal power

244 kWtherm.

Gross area of collectors

380 m2

Aperture area of collectors

348 m2 

Type of collectors

Flat plate collectors

Type of assembly

Solar roof

Orientation of collectors

South (0°)

Inclination angle to horizon

30°

Freezing protection

Propylene glycol 30 %

Overheating protection

Expansion vessel, safety valve

Operation mode

Low flow

Use of CSTS for

Hot tap water heating, swimming pool heating

Buffer storage

12 m3 (4 × 3 m3)

Hot tap water storage

5 m3 (3 m3 + 2 m3, existing storage tanks)

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

5 m3

Specification (if necessary)

Separated back-up heater/boiler for hot water heating only: standard, natural gas, capacity not available


Space heating system

Type of heating system

./.

Number of boilers

./.

Total capacity (power output) of boilers

./.

Capacity of each boiler (year of construction)

./.

Energy source

./.

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. ESCO PASCH Y CIA., S. A

Data accessible via internet

Yes

Scientific monitoring / follow up

No

Maintenance contract

Yes: three times a year

Visualisation of the solar heat output

No, just meters for hot tap water and swimming pool water heating


Yield of CSTS plant

Output of solar heat

211,374 kWh/a

Origin of data

Design (calculated)

Measuring point

Between collector and storage

Reduction of final energy

301,963 kWh/a

Origin of data

ST-ESCOs Background Study

Solar performance guarantee

Yes


Heat consumption

Whole energy consumption for heating purposes after CSTS implementation

428,698 kWh/a

Origin of data

Estimated

Energy used for

Hot tap water heating, swimming pool heating

Whole energy consumption for heating purposes before CSTS implementation

720,500 kWh/a

Total tap water consumption

12,045 m3/a

Hot tap water consumption

not available

Hot tap water temperature

45 °C

Cold water temperature

14.7 °C

 

 


Summary

The CSTS consists of 58 solar collectors: 29 rows connected in parallel with 2 collectors each one, connected in series. The water heating capacity of each row is 491 l/h which sums up a total capacity of 4,910 l/h. The system has 4 storage tanks of 3,000 l capacity each one, summing up a total of 12,000 l. Its nominal solar thermal gradient is 18,9 K. The pumps are: 1 primary pump 3 kW, 2 secondary pumps 1.1 kW and 1 secondary pump 0.25 kW.

 

 


Engineering

AIGUASOL Enginyeria
Ignasi Gurruchaga and Daniel González
C/Roger de Llúria nº 29 3er-2a
08009 Barcelona, Spain
Phone: +34 93 342 47 55
fax: +34 93 342 47 56
infoaiguasol(at)aiguasol.coop
www.aiguasol.com

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Financing and investment

 


Financing of the CSTS

Form of financing

Contracting (ESCo project)

Distribution in percentage

not available


Costs of solar materials

Total cost of solar system

198,643 Euro

Detailed costs for

Collectors

112,967 Euro

Elevation / mounting structure

16,733 Euro

Storage / heat exchanger

47,140 Euro

Backup heater

./.

Control

Included in Storage / heat exchanger)

Installation

Included in Collectors

Planning / Engineering

16,097

Others: Comissioning (1), General costs (2)

648 Euro (1)
1,202 Euro (2)


Operation costs of heating system

Increase of the operation cost after CSTS implementation

not available

 



The ESCo Pasch is in charge of the CSTS initial investment, its exploitation and its maintenance during 12 years while selling the client green energy at a price agreed in a contract. The contract includes a minimum consume for the end user around the 85 % of the expected energy production. The billing is made monthly via a fixed quantity, and at the end of the year the result is compensated in agree with the real consume. After that period of time ends, the CSTS will become property of the end user.


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Development & experiences

Summary of experiences / Notices to the project performance
The Sabadell Tennis Club decided to reduce their energy bill by installing a solar thermal system. Pasch S.A. offered the ESCo financing scheme to the club's owners and contracted Aiguasol Engineering for the design of the solar plant. The system was installed by Fototerm. The planning of the CSTS was optimised by the use of TRNSYS. It allowed estimating accurately the future performance of the installation Nowadays, the CSTS is running properly. The success of this plant is the combination of system simulations (with TRNSYS) and the ESCo project. ESCo schemes requires high system performance and accurate energy system calculations. However, further improvements can be done (i. e. the control scheme of the two heat exchangers) This experience can Certainly can cause a positive effect in the future activities of all the companies involved in the project execution


 


Experiences management

Experienced problems or failures?

Yes:
Installed PVC pipes in the secondary circuit melted.

Found solutions to these problems or failures?

Yes:
The melted pipes have been replaced by new pipes made of copper.


Financial effects / project performance

Project economically efficient?

Yes:
The client has many advantages with the implementation of an ESCO scheme. They are:
• Long-term reduction of expenses on energy
• Warranty of limited energy expenses
• More energy efficiency without investing any capital
• Some building renovation works and update of the water heating installations
• Reduction of CO2 emissions
• Outsorcing of technical and financial risks as well as maintenance works.

Fiscal or other financial effects?

No

Effects on rental fees?

No


Experiences technical staff

Experienced problems or failures?

see above

Found solutions to these problems or failures?

see above

 


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Downloads

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