SOLARGE

Aquatic Park A Coruña

Cerceda, Galicia (Spain)

Sports centre | 1,130 sqm installation

 

 


Project summary · Technical description · Financing · Development · Downloads

Project Summary

Description
This CSTS has been installed to extend the park operating season by covering a bigger demand of the swimming pool heating. Initially, the operating season was from the last week-end in May until the first week-end in September. With the solar system contribution, the season can be extended from the third in May until the last week in September. According to the calculations carried out by Aiguasol, the solar system may achieve a solar fraction of 68.8 % during the extended season at a temperature higher than 23 ºC and of 93.1 % during the regular season at 21 ºC. The total energy capacity is about 461,989 kWh, a thermal production equivalent to 90 % of a gas boiler.
This is one of the biggest installations within the country and is a remarkable example in the solar thermal field due to its design singularity (pergola construction).




 


Building

Type of building

Sports centre

Number of users / dwellings, floors

./.

Year of construction

2006

Total effective area (heated)

./. 

Hot tap water consumption (measured/estimated)

./.

Whole energy consumption for heating purpose after CSTS implementation

299,594 kWh/a


System engineering

Year of construction of CSTS

2006

Type of collectors

Flat plate collectors

Thermal power

715 kWtherm.

Aperture area of collectors*)

1,020 m2

Buffer storage

50 m3

Hot tap water storage

./.

Total capacity of boilers with energy source

./.

Type of hot tap water heating

./.

Type of heating system

./.


Costs

Total cost solar system

579,000 Euro

Cost of the CSTS / gross area of collectors

512 Euro/m2

Subsidies

70 %


Output

Output of solar heat**)

461,989 kWh/a

Reduction of final energy***)

660,644 kWh/a

CO2-emissions avoided

156 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

 

 


Fernando Antonio Tudó Anta, Council of Cerceda / Person in charge of Investment & Projects Department:

" The CSTS realized by RESOLVA Ingenieros allows to keep the water temperature according to the client´s needs. The project aims to save energy and achieve energy efficiency and is a pioneer project in Galicia due to its size."

 

 


Owner

Concello de Cerceda
Fernando Tudó
Avda. Mesón 21
15185 - Cerceda, A Coruña, Spain
Phone: +34 981 68 50 01
Fax: +34 981 685 205
fernando.tudo(at)cerceda.
dicoruna.es

www.ayuntacerceda.com


Operator

See owner

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Technical description

 


Description of the CSTS

Year of construction of CSTS

2006

Thermal power

715 kWtherm.

Gross area of collectors

1,128.4 m2

Aperture area of collectors

1,021.02 m2 

Type of collectors

Flat plate collectors

Type of assembly

Solar roof / pergola

Orientation of collectors

South (0°)

Inclination angle to horizon

20°

Freezing protection

Glycol, propilenglycol

Overheating protection

Expansion vessel

Operation mode

Low flow

Use of CSTS for

Swimming pool heating

Buffer storage

50 m3, one storage tank

Hot tap water storage

./.

Control of backup-system / CSTS

Non existing back-up system, non permitted


Hot tap water system

Type of hot water heating

./.

Recirculation system

./.

For decentralised systems:
The installation on the consumer site

./.

Size of storage for hot tap water

./. 

Specification (if necessary)

./.


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

Self-operation

CSTS monitoring

Yes: solar radiation, output of solar heat, total water consumption

Data accessible via internet

No

Scientific monitoring / follow up

No

Maintenance contract

No

Visualisation of the solar heat output

No


Yield of CSTS plant

Output of solar heat

461,989 kWh/a

Origin of data

Design (calculated)

Measuring point

Between storage and piping to taps

Reduction of final energy

660,644 kWh/a

Origin of data

Estimated

Solar performance guarantee

No


Heat consumption

Whole energy consumption for heating purposes after CSTS implementation

299,594 kWh/a

Origin of data

not available

Energy used for

Swimming pool heating

Whole energy consumption for heating purposes before CSTS implementation

960,238 kWh/a

Total tap water consumption

./.

Hot tap water consumption

./.

Hot tap water temperature

21–23 °C

Cold water temperature

./.

 

 


Summary

The installation consists of 13 rows connected in parallel and delivers 7,077 l/h divided as follows: 6 rows with 16 solar collectors (Q=2.696 l/h), 6 rows with 12 solar collectors (Q=2,022 l/h) and 1 row with 14 solar collectors (Q=2,359 l/h) which sum up a total of 182 solar collectors and a surface of 1,021m². The system nominal solar thermal gradient is 20,5 K with an estimated solar radiation of 1000 W/m2. The swimming pool’s energy demand and system dimensions have been calculated with TRANSYS. The system is composed of 8 pumps: 1 pump for the solar storage (Q = 1,76 kW), 4 primary pumps (2 × Q = 7,5 kW and 2 × Q = 1 kW) and 3 secondary pumps (Q = 0.79 kW, 0.23 kW and 0.27kW).


 


Engineering, installer

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

Purchase, 30 % self-financing

Distribution in percentage

70 % subsidies (The Galician delegation and the Galician assembly have subsidied part of the CSTS.)


Costs of solar materials

Total cost of solar system

579,000 Euro

Detailed costs for

Collectors

326,371 Euro

Elevation / mounting structure

94,870 Euro

Storage / heat exchanger

138,087 Euro

Backup heater

./.

Control

Included in Storage / heat exchanger

Installation

Included in Collectors

Planning / Engineering

20,564 Euro

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

950 Euro (1)
8,250 Euro (2)


Operation costs of heating system

Increase of the operation cost after CSTS implementation

not available

 

 


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Development & experiences

Qualitative aspects of the CSTS
The CSTS has been installed to extend the park operating season by covering a bigger demand of the swimming pool heating. The planning of the CSTS has been optimised by the use of TRNSYS. It allowed estimating accurately the future performance of the installation.
The engineering company has gained experience on stagnation behaviour for large scale solar collectors (10 m2). The experience gasined will certainly give the companies involved more opportunities in the solar thermal sector.


 


Experiences management

Experienced problems or failures?

Yes:
The temperature reached is a bit lower than expected but the CSTS works properly.

Found solutions to these problems or failures?

No


Financial effects / project performance

Project economically efficient?

Yes:
The investment is profitable in a medium term due to the extension of the swimming season.

Fiscal or other financial effects?

not available

Effects on rental fees?

not available


Experiences technical staff

Experienced problems or failures?

Yes:
There was an elevation mistake when the underground storage tank was built. This caused pumping problems.

Found solutions to these problems or failures?

Yes:
The pumping system has been redimensioned and some pumps were replaced by more powerful ones.

 



Management

RESOLVA Ingenieros
Juan XXIII, 1 - 1º
32003 Ourense
0034 90 290 51 15
0034 98 860 17 61
resolva(at)resolvaingenieros.com
www.resolvaingenieros.com

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

Downloads

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