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

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

Cabana GR4: Low energy home

PHI Low Energy Building certification for single family house with a treated floor area of 125.4 m², located in Castellcir, Barcelona.

Cabana GR4 Passivhaus

Passivhaus

Praxis cabecera proyectos

Description

PHI Low Energy Building certification for single family house with a treated floor area of 125.4 m², located in Castellcir, Barcelona. Designed by Lluís Jubert of Taller d´Arquitectura, promoted by Núria Grau and Jaume Ribas and built by Albert Fargas of Farhaus.  

The construction system is lightweight timber frame, using low-emission, bio-based materials with low environmental impact to reduce the building’s carbon footprint and provide a healthy indoor environment. The high level of insulation, minimised thermal bridges and triple low-e glazing with Farhaus timber frames, reduce heating energy demand in the winter. In the summer, external blinds reduce solar gains and overheating. Mechanical ventilation with heat recovery is provided by a Zehnder ComfoAir 180 HRV.

As part of the Passivhaus audit, Praxis revised the calculations and design documentation presented by the Passivhaus Consultant, which include architectural and M&E drawings and reports, the PHPP calculation, the Blower Door test report, ventilation commissioning documentation and photographs of the construction process and the completed building.

Links:

International Passivhaus Projects database

Spanish Passivhaus Platform (PEP) project database

Year: 2021

Location: Castellcir, Barcelona

Services:
Passivhaus certification

Cabrera de Mar: Passivhaus Plus home

Single-family home in Cabrera de Mar, Barcelona, certified Passivhaus Plus by Oliver Style of Praxis Resilient Buildings and designed by the architect Víctor Blanco of the VBTArquitecte office, with Alfred Núñez Aparicio as Passivhaus Designer.

Passivhaus Plus home in Cabrera de Mar

Passivhaus Certification

Praxis cabecera proyectos

Description

Single-family home in Cabrera de Mar, Barcelona, certified Passivhaus Plus by Oliver Style of Praxis Resilient Buildings and designed by the architect Víctor Blanco of the VBTArquitecte office, with Alfred Núñez Aparicio as Passivhaus Designer.

The house has a ground floor, first floor and basement with a floor area of 249 m2. The Izodom construction system, with Passivhaus component certification, has 50mm BASF Neopor insulation on the inside and 150mm on the outside, which surrounds the reinforced concrete structure and eliminates thermal bridges. The roof is insulated with 160mm of XPS insulation, with 150mm on the floors. Passivhaus certified WERU Afino One PVC frames, together with low emissivity triple glazing with argon gas and external blinds, make up the high-performance windows.

The Blower Door test, carried out by Oliver Style of Praxis Resilient Buildings, gave an excellent result of n50 = 0.4 ach, even with a cooker hood extracting to outside with a Naber Thermobox non-return valve.

A Passivhaus certified Zehnder Comfoair Q450 sensible heat recovery unit takes care of the controlled mechanical ventilation.

Heating and cooling are with Daikin RXM + FDX/FBA air-to-air heat pumps and ducted indoor units.

A separate Daikin ERWQ02AV3 heat pump provides domestic hot water. A 6.8 kWp photovoltaic generator will generate approximately 131% of the home’s annual energy consumption, making it a final energy net zero energy building.

Links:

PepiPHA

Photos: Alfred Núñez Aparicio

  • Year: 2023
  • Location: Cabrera de Mar, Barcelona
  • Architecture: Olga Garcia Gomez, Alfred Núñez Aparicio
  • Services provided by Praxis: Passivhaus certification, thermal bridge calculations, Blower Door airtightness tests
  • Passivhaus Certification Class: Passivhaus Plus
  • Floor area: 249 m2
  • Thermal envelope area: 744 m2
  • Blower Door result: 0,4 n50
  • Heating Demand: 2 kWh/m2·a
  • Cooling Demand: 15 kWh/m2·a
  • Primary Energy Renewable consumption (EPR): 35 kWh/m2·a
  • Final Energy consumption: 26 kWh/m2·a
  • Renewable energy generation: 66 kWh/m2·a
  • CO2eq emissions: 14 kg/m2·a

Casa #SgPi: Passivhaus Premium home

Praxis has carried out the Passivhaus Premium certification of this single-family home in Sant Pere de Ribes, Barcelona, designed by the architect and Passivhaus Designer Sergi Gargallo of SgARQ Passivhaus Architecture.

Casa #SgPi

Passivhaus

Praxis cabecera proyectos

Description

Praxis has carried out the Passivhaus Premium certification of this single-family home in Sant Pere de Ribes, Barcelona, designed by the architect and Passivhaus Designer Sergi Gargallo of SgARQ Passivhaus Architecture.

The house has a useful floor area of 254 m2 over a ground floor and three upper floors.  The project was developed by reusing an existing structure that remained unfinished, built more than 10 years ago on the same plot, thus reducing the environmental impact of the house.

Outer walls consist of a honeycomb brick with 10cm of high-performance EPS external thermal insulation. The roofs have between 10cm and 20cm of XPS insulation, and the window frames are Passivhaus certified WERU Afino One PVC with triple glazing and exterior shading devices.

An excellent result was achieved in the “Blower Door” air tightness test of n50 = 0.22 ach.

A solar photovoltaic array supplied by Prot Energia was installed on the roof, which generates 11,313 kWh/a of renewable energy. The owner also has an off-site solar photovoltaic installation that generates 10,609 kWh/a, totalling 21,922 kWh/a. The house is expected to consume a total of 6,864 kWh/a.

Through the Passivhaus certification process, Praxis audited all the calculation and design documents presented by the Passivhaus Designer, including the PHPP calculation, thermal bridge calculations, architectural and service drawings and reports, the Blower Door test report, the ventilation commissioning report, and photographic documentation of the entire construction process, to ensure that the building was built as designed and as calculated in the PHPP energy model.

PEP: https://www.plataforma-pep.org/ejemplos-ph/casa-sgpi/

iPHA: https://passivehouse-database.org/index.php?lang=en#d_7297

Photos: Joan Giribet

Year: 2023

Location: Sant Pere de Ribes, Catalonia

Services:
Passivhaus certification

Casa A: Low Energy Building, Gijón 

Description PHI Low Energy Building certification for a single-family detached home in Gijón, Asturias, designed by architect Juan Ignacio Corominas.  The house has a treated floor area of 285 m2 distributed over a ground floor and a semi-basement. The construction system is mixed, combining honeycomb brick walls with external insulation, and a timber roof structure …

Passive House in Gijón 

Passivhaus

Praxis cabecera proyectos

Description

PHI Low Energy Building certification for a single-family detached home in Gijón, Asturias, designed by architect Juan Ignacio Corominas. 

The house has a treated floor area of 285 m2 distributed over a ground floor and a semi-basement. The construction system is mixed, combining honeycomb brick walls with external insulation, and a timber roof structure with 28cm of thermal insulation.

Window frames are aluminum, Passivhaus certified, Cortizo COR 80. 

As part of the audit, Praxis audited the calculations and design documentation presented by the Passivhaus Consultant, which include architectural and M&E drawings and reports, the PHPP calculation, the Blower Door test report, ventilation commissioning documentation and photographs of the construction process and completed building.

 

Year: 2021

Location: Gijón, Asturias 

Services: Passivhaus certification 

Casa B: Low Energy Building, Gijón 

Descripción Certificación PHI Baja Demanda Energética para una vivienda unifamiliar aislada en Gijón, Asturias, diseñada por el arquitecto Juan Ignacio Corominas. La vivienda consta de 184 m2 distribuidos en una planta baja y una planta semisótano. La construcción es mixta, combinando muros de termo arcilla rectificada con aislamiento SATE y cubierta de estructura de madera …

Casa Pasiva B en Gijón

Passivhaus

Praxis cabecera proyectos

Descripción

Certificación PHI Baja Demanda Energética para una vivienda unifamiliar aislada en Gijón, Asturias, diseñada por el arquitecto Juan Ignacio Corominas.

La vivienda consta de 184 m2 distribuidos en una planta baja y una planta semisótano. La construcción es mixta, combinando muros de termo arcilla rectificada con aislamiento SATE y cubierta de estructura de madera con 28cm de aislamiento térmico. Las carpinterías son Cortizo COR 80 de aluminio con certificación de componente Passivhaus.

En la auditoría, Praxis verifica todos los documentos de cálculo y diseño presentados por la Consultora Passivhaus, que incluyen planos y memorias de arquitectura e instalaciones, cálculo PHPP, informe del test Blower Door, puesta en marcha de ventilación, seguimiento de la obra y fotografías.

Año: 2021

Lugar: Gijón, Asturias 

Servicios: Certificación Passivhaus 

Casa SgCosta: Passivhaus Plus home, Sitges

liver Style of Praxis Resilient Buildings has carried out the Passivhaus Plus certification of this single-family home in Sitges, Catalonia, designed by the architect and Passivhaus Designer Sergi Gargallo of SgARQ Passivhaus Architecture.

Casa Sg Costa

Passivhaus

Praxis cabecera proyectos

Description

Oliver Style of Praxis Resilient Buildings has carried out the Passivhaus Plus certification of this single-family home in Sitges, Catalonia, designed by the architect and Passivhaus Designer Sergi Gargallo of SgARQ Passivhaus Architecture.

During the Passivhaus certification process, Praxis audited the calculations and design documents presented by the Passivhaus Designer, including the PHPP energy model, thermal bridge calculations, architectural and HVAC drawings and reports, the Blower Door test report, the ventilation commissioning report, and photographic documentation of the construction process, to ensure that the building was built as designed and as calculated in the PHPP model.

Photos: Joan Giribet

More information about the project in our Blog article: https://praxis-rb.com/casa-sg-costa-passivhaus-plus-en-clima-calido/

Links:

International Passivhaus Projects database

Spanish Passivhaus Platform (PEP) project database

Year: 2022

Location: Sitges, Cataluña

Services:
Passivhaus certification

Casa AYA: straw bale passive house, Uruguay

Casa AYA is the first straw bale home built to Passivhaus standard in Latin America. Designed by Martin Comas of Arquitectura Regenerativa – aRRe, with Oliver Style of Praxis Resilient Building providing Passivhaus audits, the home is located in Carrasco, Uruguay.

Casa AYA

Passivhaus

Praxis cabecera proyectos

Description

Casa AYA is the first straw bale home built to Passivhaus standard in Latin America. Designed by Martin Comas of Arquitectura Regenerativa – aRRe, with Oliver Style of Praxis Resilient Building providing Passivhaus audits, the home is located in Carrasco, Uruguay.

During the Passivhaus certification process, Praxis audited the calculation and design documents presented by the Passivhaus Designer, including the PHPP energy model, thermal bridge calculations, architectural and service drawings and reports, the Blower Door test report, the ventilation commissioning report, and photographic documentation of the construction process, to ensure that the building was built as designed and as calculated in the PHPP model.

Photos: Martin Comas

References:

Project details at International Passivhaus Projects database

Featured at Passivhaus Accellerator

Year: 2022

Location: Carrasco, Uruguay

Services:
Passivhaus certification