Primary energy need :
(Calculation method : )
The Multiasistencia headquarters is located at Tres Cantos town, it was built in1979. It is located between the Ronda de Poniente, the railway and two otheroffice buildings on both sides. The plot has 4541m² of surface, with a floorarea of 1446m² , the total constructed area is 5903 m².
Thebuilding type is isolated block, with a symmetrical floor, consisting of twoarticulated áreas by a central core, where general services are located. It has threefloors using like offices, and abasement floor for parking. There is a main pedestrian entrance in the central zone, alateral entrance of vehicle access to parking and other access for vehicles atthe other side.
The rehabilitation works, for thepurpose of improve energy efficiency and thermal conditions, have consisted inputting of a rigid insulation on outer face, as part of the construction of a ventilatedfacade; which has permitted asignificant improvement of the corporate image of the building. On the otherhand, the air conditioning system has improved, replacing the current machines,with more efficient ones; enhancementshave also been made in the ventilation system.
The totality of these construction works havebeen carried out between the months of June and September 2014, over 14 weeks.
The objectives were achieved,obtaining an energy certification type C, a significant improvement inefficiency and user comfort, as well as a modern update of building envelopeand recreation green areas.
The results have been achieve, saving 45,000euros in electric cost per year, with the improvement of two degrees in theenergy rating and reducing 40% energyconsumption.
This project has convinced thejury of the Ministry of Environment and Innovation of the Community of Madridto give the first "Award for Best Energy Rehabilitation in the Tertiary Sector 2015"
3rd part certified
DesignerFRANCISCO BERRUETE b+b ARQUITECTURA FRANCISCO BERRUETE [email protected]
Facility managerCREARTE ÁLVARO BERRUETE
DeveloperKYRENE. Fernando Rodrigo
Construction companyINOVA. CARLOS MARTÍNEZ JOVER MANUEL LÓPEZ LLOPÍS
Construction ManagerARQUITECTURA DE OBRAS CASTELNOU, AMBITEC Y JOSE ANTONIO PEÑAS
Owner approach of sustainability
The philosophy of the builder is to maintain and retain the tenant by reducing electrical costs, improving comfort of the workers and in tun renew the corporate image of the building.
Sheet steel: model 'Athena' 'on blind parts.
Curtain wall: in the central part of the building on the front facade.
Expanded steel panel: type "Deploye '' in the central part of the building in the rear facade.
If you had to do it again?
Maybe I thought the curtain wall solution centerpiece on the front facade for its mismatch price and implementation deadlines with respect to the set of solutions adopted.
In the rear facade of the central core of communications would have chosen a sheet expanded with dimensions smaller holes, to give a more opaque picture.
BUILDING USERS OPINION :
In addition to the requirements set by our client, building owner, in terms of budget and execution time, we have worked closely with Multiasistencia user of the building during the restoration work.
Contributions and tenant demands proposed in weekly meetings with the Finance Department of the multinational, the architecture team that advised them, the works council of workers and those responsible for health and safety at work.
The exchange of views with our technical team and especially with the Project Management reported us a feel-back very enriching impressions of building users as to the expectations that rehabilitation could bring them and the revised and improved comfort obtained.
- 241,10 kWhpe/m2.year
- 275,40 kWhpe/m2.year
- 92,60 kWhfe/m2.year
- 151,60 kWhpe/m2.year
- 0,31 W.m-2.K-1
- Fan coil
- Other hot water system
- VRV Syst. (Variable refrigerant Volume)
- Natural ventilation
- No renewable energy systems
Indoor Air quality
Model "DANOPREN 40"
4 cm thick
Panel of extruded polystyrene foam high density 30Kg / m3
It is placed with mechanical fixings over the existing enclosure
The ventilated facade gets a great savings in energy consumption, both summer and winter.
ARCHITECTURAL METAL PROFILE
ATENEA architectural metal profile, designed as facade exterior cladding.
Nerve height 44 mm
Useful width 1010 mm
Thickness 0.75 mm
Profiled galvanized steel fixing
Although needed mechanical placement, coordinated work of different teams collaborated in the quick installation, working after hours to prevent workers acoustic discomfort.
PANEL EXPANDED STEEL
The rear facade has been met with a panel of expanded steel, type ''deploye ''.
Expanded metal mesh type RO90 (90x30x9), starting for manufacturing materials galvanized steel GA 275 DX 51D + Z NAC 1.5 mm thick.
Perforated plate was used on top of the windows, reducing by 30% the incidence of the sun setting over the holes.
The Daikin VRV system is a multi-split type air conditioner that uses variable refrigerant flow control developed by Daikin to provide customers with the ability to maintain individual zone control in each room and floor of a building.
VRV Outdoor Units: model RXYQ8T
Indoor unit: model FXSQ20P
This system managed to reach comfort temperatures faster.
The rehabilitation of the building has brought an action in the corporate image MULTIASISTENCIA offers its customers, as well as improving integration as architectural piece in the urban environment where it is located. More than 600 people have improved their work conditions, in aspects such as: climate comfort, environmental air quality, accessibility and enjoyment of building with a new recreation area in the garden. The solution of a ventilated facade made possible the placement of outer plates, which besides creating flights that protect glazed areas, increasing their isolation and create an attractive envelope. The substitution of machinery for producing heat and cold in the deck area, it generates no visual impact and has equipped its location conditions that increase their performance and durability. They have installed new vents and air exchange exterior-interior, its a esthetically integrated under the sheets "deploye" the core of the rear facade, help to improve environmental conditions inside the offices; while the replacement of all control systems the installations, get a reduction and greater user comfort. Rehabilitation works were executed in 90 days, coinciding with the summer holidays of employees, with the building area where the construction has been made. The stay of people in a building often avoids possible restructuring of human resources, as well as outsourcing or offshoring of services in big companies.
Land plot area
4 541,00 m2
The building has pedestrian main access and two secondary access of passing vehicles and has outdoor parking area and garage.