Sa Vinya: Passivhaus Plus home

Sa Vinya is a passive house nestled between the almond trees of the Pla de Corona valley, Sant Antoni de Portmany, Ibiza. Designed by Jaime Romano of Romano Arquitectos, the architect took his inspiration from Josep Maria Sert.

Sa Vinya: Passivhaus Plus home

Passivhaus Consultancy

Praxis cabecera proyectos

Description

Sa Vinya is a passive house nestled between the almond trees of the Pla de Corona valley, Sant Antoni de Portmany, Ibiza. Designed by Jaime Romano of Romano Arquitectos, the architect took his inspiration from Josep Maria Sert.

The house is totally disconnected from the grid and has an on-site 15.3 kWp photovoltaic array with lithium batteries. Sa Vinya is certified as Passivhaus Plus certification, generating, annually, 89% more energy than it consumes.

The construction system consists of a beam and block suspended floor slab with 20 cm of XPS insulation. The outer walls are load bearing, with 24 cm thick cellular concrete blocks, with an interior service void with 6 cm of mineral wool insulation. The roof is lightweight, with a wooden structure and 20cm of XPS insulation. The windows have 74mm timber frames with double low-e glazing and argon gas.

An excellent result of n50 = 0.42 ren/h was achieved in the Blower Door test.

Mechanical ventilation is taken care of with two Passivhaus certified Zehnder Paul Climos F200 enthalpy heat and moisture recovery units.

Space heating is by underfloor heating, powered by a VRV heat pump and hydro-kit. The same heat pump produces domestic hot water. In summer, cooling is done with wall and ducted split units.

Praxis carried out the Passivhaus design and consultancy, including energy modelling with DesignPH & PHPP, the design of the airtight layer, design of thermal bridge free construction details and thermal bridge calculations, and management of the entire Passivhaus certification process.

Links:

PepiPHA

Photos: Lluis Lopez Castro

  • Year: 2020
  • Location: Sant Antoni de Portmany, Ibiza, Balearic Islands, Spain
  • Architecture: Romano Arquitectos
  • Services provided by Praxis: Passivhaus Consultancy, building physics, thermal bridge calculations, design of airtight layer
  • Passivhaus Certification Class: Passivhaus Plus
  • Floor area: 214 m2
  • Thermal envelope area: 914 m2
  • Blower Door result: 0,42 n50
  • Heating Demand: 11 kWh/m2·a
  • Cooling Demand: 18 kWh/m2·a
  • Primary Energy Renewable consumption EPR: 53 kWh/m2·a
  • Final Energy consumption: 37 kWh/m2·a
  • Renewable energy generation: 70 kWh/m2·a
  • CO2eq emissions: 20 kg/m2·a

El Niu, multi-family Passivhaus

El Niu, meaning the “Nest” in Catalan, is Andorra’s first multi-residential Passivhaus Plus certified building, and was certified by Oliver Style of Praxis Resilient Buildings, developed by Lluis Lopez Castro of Propietats y Gestió, and designed by Antoni Martí.

El Niu, multi-family Passivhaus

Passivhaus Certification

Praxis cabecera proyectos

Description

El Niu, meaning the “Nest” in Catalan, is Andorra’s first multi-residential Passivhaus Plus certified building, and was certified by Oliver Style of Praxis Resilient Buildings, developed by Lluis Lopez Castro of Propietats y Gestió, and designed by Antoni Martí.

Nestled up at 1275 meters above sea level, El Niu houses 11 dwelling units with a total TFA of 1292 m2 over 4 floors.

Heating and hot water is provided by Pichler PKOM 4 compact heat pump units, providing heat recovery ventilation, heating, cooling, and hot water generation.

The façade consists of two different steel frame systems: the Passivhaus certified Passivhaus External Wall System by Knauf Insulation, and the Archisol and Promisol systems by Arcelor Mittal.

A 37,7 kWp solar PV array is projected to generate 91 % what the building consumes, turning it into a nearly net-zero energy powerhouse that uses approximately 71% less than pre-2010 buildings en Andorra, while emitting only 5976 kg of CO2eq per annum.

Links:

PepiPHA

Photos: Lluis Lopez Castro

  • Year: 2024
  • Location: Ordino, Andorra
  • Architecture: Despatx d’arquitectura Antoni Martí
  • Services provided by Praxis: Passivhaus Certification, thermal bridge calculations
  • Passivhaus Certification Class: Passivhaus Plus
  • Floor area: 1.292 m2
  • Thermal envelope area: 2.677 m2
  • Blower Door result: 0,6 n50
  • Heating Demand: 20 kWh/m2·a
  • Cooling Demand: – kWh/m2·a
  • Primary Energy Renewable consumption EPR: 37 kWh/m2·a
  • Final Energy consumption: 31 kWh/m2·a
  • Renewable energy generation: 28 kWh/m2·a
  • CO2eq emissions: 11 kg/m2·a

Terrassa Haus: multi-family Passivhaus Classic

Terrassa Haus is the first multi-residential building to receive Passivhaus certification in the city of Terrasa, Catalonia, Spain. The project was developed by Cambolico and designed by architects Antoni Espona & Xavier Torcal. Oliver Style and Bega Clavero from Praxis Resilient Buildings carried out the Passivhaus consultancy, HVAC design and Blower Door testing.

Terrassa Haus

Passivhaus Consultancy

Praxis cabecera proyectos

Description

Terrassa Haus is the first multi-residential building to receive Passivhaus certification in the city of Terrasa, Catalonia, Spain. The project was developed by Cambolico and designed by architects Antoni Espona & Xavier Torcal. Oliver Style and Bega Clavero from Praxis Resilient Buildings carried out the Passivhaus consultancy, HVAC design and Blower Door testing. The building achieved Passivhaus Classic certification.  

The ground floor offers 2 commercial spaces, with a further three floors with apartments ranging from 76 m2 to 154 m2. The building has a total floor area of 1142m2 and includes a communal co-working space, bike room, gym, and communal pool.

With an existing concrete structure that had been abandoned during the economic crisis of 2007, an external thermal insulation system with EPS insulation was applied over ceramic brick and rendered, with a further 5cm of Knauf Insulation mineral wool inside in the service void. The roof is insulated with XPS insulation. Rehau PVC windows frames with argon-filled low-e coated glazing make up the openings, with Swisspacer insulated glazing spacers to further reduce heat loss.

Heating, cooling and hot water is provided by individual Hitachi all-in-one heat pumps in each apartment. Similarly, mechanical ventilation with heat recovery is provided by individual Soler & Palau Passivhaus certified ventilation units, with intake air drawn in from the façade walls and stale air extracted to the roof with shared extract ducts.

Links:

PepiPHA

Photos: Terrassa Haus

  • Year: 2023
  • Location: Terrassa, Barcelona, España
  • Architecture: Antoni Espona & Xavier Torcal
  • Services provided by Praxis: Passivhaus Consultancy, thermal bridge calculations, building physics, heating-cooling-DHW-ventilation system design, Blower Door airtightness tests
  • Passivhaus Certification Class: Passivhaus Classic
  • Floor area: 1.142 m2
  • Thermal envelope area: 1.500 m2
  • Blower Door result: 0,6 n50
  • Heating Demand: 10 kWh/m2·a
  • Cooling Demand: 15 kWh/m2·a
  • Primary Energy Renewable consumption (EPR): 60 kWh/m2·a
  • Final Energy consumption: 50 kWh/m2·a
  • Renewable energy generation: 0 kWh/m2·a
  • CO2eq emissions: 18 kg/m2·a

Lekunberri: Passivhaus Classic home

Praxis has carried out the Passivhaus Classic certification of this single-family home in Lekunberri, Navarra, designed by the architect and Passivhaus Designer Pedro Mariñelarena Albéniz, together with Itziar Iriarte Zubiría.

Passivhaus home in Lekunberri

Passivhaus

Praxis cabecera proyectos

Description

Praxis has carried out the Passivhaus Classic certification of this single-family home in Lekunberri, Navarra, designed by the architect and Passivhaus Designer Pedro Mariñelarena Albéniz, together with Itziar Iriarte Zubiría.

This single-family home was designed and built using bio-construction criteria. Outer walls are made of exposed CLT panels, insulated externally with 240mm of wood fibre insulation and natural lime render. A Zehnder Q350 HRV unit provides mechanical ventilation with heat recovery. The timber window frames were supplied by Iribarren, a local manufacturer located in the Navarra region. The house achieved an impressive blower door test of n50 = 0.27 ach. A De Dietrich ALEZIO S 6 MR air-to-water heat pump delivers space heating with underfloor heating, as well as producing domestic hot water.

Links:

International Passivhaus Projects database

Spanish Passivhaus Platform (PEP) project database

Year: 2023

Location: Lekunberri, Navarra

Services:
Passivhaus certification

ROI ELIT: Passivhaus component certification

Description Passivhaus component certification of the ROI ELIT 93.2 timber window frames, by Grup-35. CálCalculation and optimisation of the thermal transmittance, Uf, of the frames according to the EN-ISO 10077 1 and UNE-EN-ISO 10077 2 standards, using the finite element simulation program Dartwin Frame Simulator Pro.Through our work, we were able to improve the thermal …

Passivhaus window frame ROI ELIT 93.2

R & D

Praxis cabecera proyectos

Description

Passivhaus component certification of the ROI ELIT 93.2 timber window frames, by Grup-35.

CálCalculation and optimisation of the thermal transmittance, Uf, of the frames according to the EN-ISO 10077 1 and UNE-EN-ISO 10077 2 standards, using the finite element simulation program Dartwin Frame Simulator Pro.Through our work, we were able to improve the thermal performance of the frames. We steered the client through the certification process with the Passivhaus Institut, and in under two months, successfully achieved phB class certification for warm-temperate climates.

Year: 2021

Location: Glomès, Lleida

Services: Passivhaus component certification

Santa Coloma de Farners: Low Energy Building

Description Passivhaus design and consultancy for 4 terraced houses in Santa Coloma de Farners, Girona, design and developed by the Quim Ferrer, de Ecospai. Each home has a gross floor area of around 165 m2, distributed over 3 floors, with an underground parking lot. They are built with healthy and low-impact materials, and are in …

Terraced houses in Santa Coloma de Farners

Passivhaus

Praxis cabecera proyectos

Description

Passivhaus design and consultancy for 4 terraced houses in Santa Coloma de Farners, Girona, design and developed by the Quim Ferrer, de Ecospai.

Each home has a gross floor area of around 165 m2, distributed over 3 floors, with an underground parking lot. They are built with healthy and low-impact materials, and are in the process of Passivhaus Classic certification.

Praxis has delivered the PHPP modelling, design of the thermal envelope and airtight layer, advice on low-impact materials, and analysis and optimisation of thermal bridges and construction details. Praxis has also undertaken on-site Passivhaus supervision and quality control.

Year: 2021

Location: Santa Coloma de Farners, Girona

Services:
Passivhaus design & consultancy, Site supervision

Massies de Mollet: Passivhaus Nursing Home

Description Passivhaus design and consultancy for an elderly people’s residency located in Mollet del Vallès. This 6575 m2 building, designed by Genars and developed by FIATC Seguros via FIATC Residencias (Inverfiatc), is in the process of Passivhaus Classic certification. Praxis has delivered the PHPP modelling, design of the thermal envelope and airtight layer, advice on …

Massies de Mollet Nursing Home

Passivhaus

Praxis cabecera proyectos

Description

Passivhaus design and consultancy for an elderly people’s residency located in Mollet del Vallès. This 6575 m2 building, designed by Genars and developed by FIATC Seguros via FIATC Residencias (Inverfiatc), is in the process of Passivhaus Classic certification.

Praxis has delivered the PHPP modelling, design of the thermal envelope and airtight layer, advice on low-impact materials, and analysis and optimisation of thermal bridges and construction details.

We’ve also undertaken a thermodynamic and daylighting study of the building, using DesignBuilder (EnergyPlus & Radiance), to assess natural light levels and analyse the risk of summer overheating.

Our work has also included an audit of the mechanical and electrical systems, with proposals for improvements and compliance with the Passivhaus standard, to ensure efficient operation and low maintenance costs. Praxis has also undertaken the Blower Door testing and on-site Passivhaus supervision and quality control.

Year: 2021

Location: Mollet del Vallès, Barcelona

Services:
Passivhaus consultancy, thermodynamic simulation, daylighting analysis, M & E consultancy, Blower Door testing

ICONIC: High performance sports centre, Andorra 

Description Passivhaus design and consultancy for a high-performance sports centre located at 2600 metres above sea level in El Pas de la Casa, Andorra. This 9000 m2 building, designed by Engitec, is in the process of Passivhaus Classic certification.  Praxis has done the PHPP energy modelling, design of the thermal envelope and airtight layer, advice …

Cramea, High performance sports centre

Passivhaus

Praxis cabecera proyectos

Description

Passivhaus design and consultancy for a high-performance sports centre located at 2600 metres above sea level in El Pas de la Casa, Andorra. This 9000 m2 building, designed by Engitec, is in the process of Passivhaus Classic certification. 

Praxis has done the PHPP energy modelling, design of the thermal envelope and airtight layer, advice on low-impact materials, and analysis and optimisation of thermal bridges and construction details.

We’ve undertaken thermodynamic analysis of the building, using Design Builder (EnergyPlus), to assess thermal comfort and analyse the risk of summer overheating in critical zones in the building.

We have also consulted on mechanical and electrical system design, with proposals for improvements and compliance with the Passivhaus standard, to ensure efficient operation and low maintenance costs. Finally, we have provided with on-site Passivhaus supervision and quality control. 

Year: 2022

Location: El Pas de la Casa, Andorra 

Services Passivhaus design & consultancy, thermodynamic simulation, M & E consultancy, and site supervision  

Learnlife Eco Hub: Passivhaus learning space

Passivhaus design & consultancy for a pop-up learning hub in Castelldefels, Barcelona, designed by the Learnlife team.

Learnlife Eco Hub: pop-up learning space

Passivhaus, M & E engineering, Blower Door

Praxis cabecera proyectos

Descripción

Passivhaus consultancy for the Eco Hub, a pop-up learning hub in Castelldefels, Barcelona, designed by the Learnlife team, whose philosophy is to provide spaces that offer “a better way of learning, backed by science and research, that is learner-centred and focuses on self-determined, purpose-inspired and personal learning”.

Winner of the Green Solutions Awards 2022-2023 of Construction 21 Spain in the Low-tech Category, the Eco Hub consists of two prefabricated timber modules built by Tall Fusta and made from healthy and low environmental impact materials. Windows are made by Elke Wood Windows, with meranti frames and low-e argon filled double glazing. Each module is equipped with a Passivhaus certified Zehnder mechanical ventilation system with heat recovery, for optimum air quality.

Praxis has delivered the PHPP modelling, design of the thermal envelope and airtight layer, advice on low-impact materials, and analysis and optimisation of thermal bridges and construction detail, together with the design of the M & E systems: mechanical ventilation with heat recovery, space heating and cooling, hot water production, and solar PV.  Praxis has also undertaken the Blower Door testing and on-site Passivhaus supervision and quality control.

Photos by Jordi Vila Marta – Argotphoto

International Passivhaus Projects database

Spanish Passivhaus Platform (PEP) project database

Construction 21 Spain project database

Year: 2021

Location: Castelldefels, Barcelona

Services:
Passivhaus Consultancy, Blower Door Tests, Site supervision, MVHR design and specification, heating and cooling system design and specification

San José: 3 Passivhaus Classic Homes, Ibiza 

Description Passivhaus design and consultancy for 3 detached single-family certified Passive Houses in San Josep de Sa Talaia, Ibiza, designed by Mixis Arquitectos and executed by Avante. Project Management and construction management was undertaken by Martínez-Gil. Each home has a treated floor area of 270 m2, over 2 floors with a heated basement, achieving Passivhaus …

3 single-family Passive Houses in Ibiza

Passivhaus

Praxis cabecera proyectos

Description

Passivhaus design and consultancy for 3 detached single-family certified Passive Houses in San Josep de Sa Talaia, Ibiza, designed by Mixis Arquitectos and executed by Avante. Project Management and construction management was undertaken by Martínez-Gil. Each home has a treated floor area of 270 m2, over 2 floors with a heated basement, achieving Passivhaus Classic certification

Praxis did the Passivhaus design and energy modelling with PHPP, design of the thermal and airtight envelope, advice on low environmental impact materials, optimization of construction details and calculation of thermal bridges. 

Our work focused on implementing passive design strategies to reduce summer overheating.

Year: 2021

Location: Sant Josep de Sa Talaia, Balearic Islands

Services: Passivhaus consultancy