Vil·la Urània: complex of public facilities

Last modified by the author on 16/06/2017 - 10:20

Extension + refurbishment

  • Building Type : Other building
  • Construction Year : 2017
  • Delivery year : 2017
  • Address 1 - street : 08006 BARCELONA, España
  • Climate zone : [Csb] Coastal Mediterranean - Mild with cool, dry summer.

  • Net Floor Area : 2 686 m2
  • Construction/refurbishment cost : 5 291 259 €
  • Number of none : 1 none
  • Cost/m2 : 1969.94 €/m2

Proposed by :

Certifications :

  • Primary energy need
    34.52 kWhpe/m2.year
    (Calculation method : RD: 47/2007 )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building
Vil·la Urània is a small residence of the late nineteenth century that was home to the renowned astronomer Josep Comas i Solà, in the district of Sarrià-Sant Gervasi in Barcelona. The re-densification of the neighborhood left the building and the small surrounding garden encased between two large dividing walls. The new complex of facilities assumes the challenge of giving a new life to the existing building and gardens by incorporating them into a new building with low environmental impact and reduced energy consumption. The new equipment, with more than 3200m2, stands out for the use of intermediate spaces, naturally heated, closed by a large facade formed by several overlapping filters that adapt to the external conditions, providing a vegetal facade that accompanies the users in all their activities.

See more details about this project

Data reliability

3rd part certified



    UTE SUMO arquitectes SLP (jordi pagès, Marc Camallonga, Pasqual Bendicho) + Yolanda Olmo

    Sumo Arquitectes. Barcelona

    First prize in public competition, Project and Management of works

    Construction Manager

    UTE Dragados-Acsa Sorigué

    Manuel Arguijo i Asociados

    Construction company

    AIA Instal·lacions arquitectóniques

    Thermal consultancy agency


    Other consultancy agency

    Q estudi. Presupueto y mediciones

    Facility manager




Contracting method

General Contractor

Owner approach of sustainability

The promoter of the building is the Barcelona City Council. Bimsa is the municipal company in charge of the management and supervision of the projects. The terms of the tender and the specifications laid down the need to introduce sustainable and energy efficiency parameters, aiming to achieve almost null consumption buildings nZEB.

Architectural description

Vil·la Urània is a small residence of the late nineteenth century that was home to the renowned astronomer Josep Comas i Solà, in the district of Sarrià-Sant Gervasi in Barcelona. The re-densification of the neighborhood left the building and the small surrounding garden encased between two large medianeras. The new complex of equipment assumes the challenge of giving a new life to the existing building and gardens by incorporating it into a new building of low environmental impact and reduced energy consumption. The extension is conceived as a tall and narrow building, oriented to South-east with a large gallery, a semi-detached greenhouse, which passively air-conditions the meeting areas and informal activities as well as the circulation of the building. This intermediate space functions as a winter greenhouse and as a shade in summer, and acts as a thermal mattress by separating the heated areas from the outside, reducing the energy demand of the building. The facade adapts automatically to outdoor conditions. Indoor temperature sensors act on the glass facade, opening it completely when necessary. Outside probes measure solar radiation by acting on the folding shutters in summer. The inner plantation formed by different species provides a pleasant sensation of freshness in summer, while in winter reduces its volume to allow to capture the solar radiation. The building envelope has been designed to achieve low thermal transmittance, minimize thermal bridges and a high level of tightness.

Energy consumption

  • 34,52 kWhpe/m2.year
  • 195,93 kWhpe/m2.year
  • RD: 47/2007

  • 17,67 kWhfe/m2.year
  • Heating: 3,26kWhFE / m2year
    Cooling: 5,29kWhFE / m2year
    ACS: 1.75kWhFE / m2year
    Lighting: 7,37kWhFE / m2year

  • 1,00 kWhpe/m2.year

Envelope performance

  • 0,26 W.m-2.K-1
  • Cover U: 0.23 W / m2K
    U Facade: 0.26-0.31 W / m2K
    Walls buried U: 0.26 W / m2K
    Solera U: 0.44 W / m2K.
    The glazings have been selected depending on their specific location:
    - Glazing between interior and exterior: Ug: 1,3 W / m2K TL: 70% g: 0,41
    - Glazing between interior and exterior space: Ug: 1,5 W / m2K TL: 78% g: 0 , 65
    - Intermediate and Exterior Glazing: Ug: 5.4 W / m2K TL: 80% g: 0.82
    Wood carpentry U: 2W / m2K

  • 0,29
  • HE1 BD

    The control system has been designed with a friendly and intuitive interface. The elements that affect the comfort and usability of the building are also controlled by manual controls. Automated blinds are automatically controlled, but switches in the gap allow them to be operated in separate blocks manually. The manual operation has a predetermined duration (configurable) and then goes back to automatic mode.


    • Geothermal heat pump
    • Others
    • Heat pump
    • Geothermal heat pump
    • Chilled Beam
    • Natural ventilation
    • Nocturnal ventilation
    • Free-cooling
    • Double flow
    • Solar photovoltaic
    • Heat Pump on geothermal probes
  • 37,54 %
  •  En la aportacion de renovables no se ha contabilizado la fraccin renovable de la Geotermia

    High efficient active systems have been chosen, so the building has a 200kW geothermal heat pump with 11 wells 100m deep (100kW) combined with a 160kW remote evaporator for peak times and for when the outside temperature is more favorable for the exchange. The rooms have inductors (cold cars) and a primary air system provided by high efficiency heat recovery units with frequency inverter and possibility of freecooling, controlled in each room by presence sensors and CO2 to perform the air renovation alone When necessary. The lighting is LED and the building has photovoltaic production with 19kWpic installed.

    In the contribution of renewables (37.54% of PE), the renewable fraction provided by geothermal energy has not been counted (if we include geothermal energy, the percentage is 63%)

    The intermediate space is naturally air-conditioned. The dynamic facade controls its configuration at all times

Smart Building

    The dynamic facade adapts automatically to what happens outside and inside. The large glazed façade opens automatically in 12 independent zones, and each zone is controlled by an interior temperature sensor.

    The building has a complete monitoring system. A custom interface has been designed so that part of the data (electricity consumption, photovoltaic production, temperatures etc.) is available on indoor monitors.

    The building has a control system, whose interface has been carefully designed. Some functions can be controlled manually without having to access the control console, to promote interoperability with users. The manual mode has a preset duration (configurable) and then returns to automatic mode. The opinions of the first users are favorable, once they overcome the fear of a complex system, they find it intuitive and logical.

GHG emissions

  • 3,65 KgCO2/m2/year
  • Method of calculation: energy certification; heating, cooling, ventilation and auxiliary, ACS and lighting

Water management

  • 146,70 m3
  • 57,70 m3
  • For irrigation, a buried deposit of 20,000L has been designed. The irrigation system is by dripping to achieve an efficient use of water. The irrigation of the interior plantation is done with a closed circuit with fertiirrigación adjusting the quantity of water to the time of the year. The deposit also covers the irrigation of the garden of the plot. Whenever possible, autochthonous plants with low water consumption have been selected. The irrigation system was designed to cover 100% of irrigation needs with rainwater.

Indoor Air quality

    During construction, materials and construction systems with very low VOC content have been selected. Priority has been given to natural materials of low elavoration and with little treatment, leaving them exposed. Thus, wood and concrete are the predominant materials in the interior. To achieve the best air quality and at the same time reduce energy consumption, air renovation has been arranged according to the needs of each room. All rooms in the building have presence sensors and CO2 so that mechanical ventilation is activated only when necessary. The intermediate space (20% of the building) is ventilated naturally, with different intensities depending on the time of year. In summer the facade is totally open and the inner courtyard collaborates in generating a good cross ventilation.


    In order to favor a healthy work environment, natural low-VOC materials and non-static electricity storage were prioritized. All the rooms of the building have natural light. On the other hand the large areas corresponding to the garden gallery favor the relationship between the occupants, a natural air conditioning and the contact with the outside (the intermediate space helps the users to become aware of the changes of season, and the building is in constant evolution).

    El edificio se ha dividido en tres áreas con diferentes niveles de confort, atendiendo a las actividades que se van a desarrollar; ESPACIO EXTERIOR: Escalera, patio, terrazas etc sin ningún acondicionamiento. ESPACIO INTERIOR: Climatizado. 21ºC-26ºC. ES


    Swegon heat recuperator


    Swegon S.A.U C/ Lope de Vega 2, 2ª planta. 28231 Las Rozas, Madrid.

    High efficiency heat recovery units

    Silent and compact. Acceptance by all parties has been very good

    Halton Rex chilled beams


    C/ Jerez de los Caballeros, 2 (BBC) 28042 Madrid España Tel. +34 913 058 503 Fax + 34 917 467 006

    Ceiling induction elements. Active chilled beams that provide heating and cooling by incorporating treated renewal air from the heat registers

    Easy maintenance, no fans or filters. They are "exposed", facilitating access to controls and drives

Construction and exploitation costs

  • 5 691 259

Urban environment

The building is located in a very consolidated area of the city center of Barcelona with different options of public transport. Vil·la Urània was surrounded by large dividing walls of the adjoining buildings. The high and narrow building was designed to avoid the demolition of the preexisting vil·la and with its little occupation to liberate an interior garden.

Land plot area

1 119,00 m2

Built-up area

551,75 %

Green space


Building Environmental Quality

  • indoor air quality and health
  • consultation - cooperation
  • acoustics
  • comfort (visual, olfactive, thermal)
  • water management
  • energy efficiency
  • renewable energies
  • products and materials

Reasons for participating in the competition(s)

​La ampliación se concibe como un edificio alto y estrecho, orientado a Sur-este con una gran galería, un invernadero adosado, que climatiza de forma pasiva las zonas de encuentro y de actividades informales así como las circulaciones del edificio. Este espacio intermedio funciona como un invernadero en invierno y como un umbráculo en verano, y actúa como colchón térmico al separar las zonas climatizadas del exterior, reduciendo la demanda energética del edificio. La fachada se adapta de forma automática a las condiciones exteriores. Sensores de temperatura interior actúan sobre la fachada de vidrio, abriéndola completamente cuando es necesario. Sondas exteriores miden la radiación solar actuando sobre las persianas replegables en verano. La plantación interior formada por diferentes especies proporciona una agradable sensación de frescor en verano, mientras que en invierno reduce su volumen para permitir captar la radiación solar. La envolvente del edificio se ha diseñado para conseguir una transmitancia térmica baja, minimizar los puentes térmicos y un nivel alto de estanqueidad. Cubierta U:0,23 W/m2K, Fachada U:0,26-0,31 W/m2K, Muros enterrados U:0,26 W/m2K, Solera U:0,44 W/m2K.

Los acristalamientos se han seleccionado dependiendo de su ubicación concreta:

Acristalamientos entre espacio Interior y el Exterior: Ug:1,3 W/m2K TL:70% g:0,41

Acristalamientos entre espacio Interior y el Intermedio: Ug:1,5 W/m2K TL:78% g:0,65

Acristalamientos entre espacio Intermedio y el Exterior: Ug:5,4 W/m2K TL:80% g:0,82

Carpintería de madera Um:2W/m2K

Se han escogido sistemas activos de alta eficiencia, así el edificio dispone de una bomba de calor geotérmica de 200kW con 11 pozos de 100m de profundidad (100kW) que se combina con un evaporador remoto de 160kW para los momentos punta y cuando la temperatura exterior es más favorable. Las salas disponen de inductores (bigas frías)y un sistema de aire primario proporcionado por recuperadores de calor de alta eficiencia controlados por sensores de presencia y de CO2 para realizar la renovación de aire solo cuando es preciso. La iluminación es LED y el edificio dispone de producción fotovoltaica con 19kWpic instalados.

El edificio destaca también por la utilización intensiva de materiales de bajo impacto ambiental, rápidamente renovables y de origen reciclado, entre ellos; estructuras auxiliares y carpinterías de madera, muros cortina mixtos madera-aluminio o aislamiento de cáñamo. Un depósito enterrado de 20.000L permite recoger agua de lluvia y usarla en un circuito cerrado para el riego de la plantación del edificio.

El edificio dispone de certificación energética A y la certificación leed oro en fase de proyecto, se está tramitando la certificación leed platino para el edificio terminado.

Building candidate in the category

Energy & Temperate Climates

Energy & Temperate Climates

Health & Comfort

Health & Comfort

Smart Building

Smart Building

Users' Choice

Users' Choice

Green Solutions Awards 2017 - Buildings

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Author of the page

jordi pagès serra

socio fundador

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Green Solutions Awards 2017 - Buildings