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Sabadell, Catalonia, Spain
Sports Centre | 380 sqm installation
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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.
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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 | ./.
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Costs
| Total cost solar system | 198,643 Euro | Cost of the CSTS / gross area of collectors | 523 Euro/m2 | Subsidies | not available
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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."
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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 | |
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
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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
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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
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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 | |
Financing of the CSTS
| Form of financing | Contracting (ESCo project)
| Distribution in percentage | not available
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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)
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Operation costs of heating system
| Increase of the operation cost after CSTS implementation | not available
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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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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 | 
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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.
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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
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Experiences technical staff
| Experienced problems or failures? | see above
| Found solutions to these problems or failures? | see above | |
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PDF datasheet coming soon
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