Cabana GR4 Passivhaus

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

Casa Sg Costa

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

Passivhaus home in Lekunberri

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

Ca Na Lola

Ca Na Lola is a single-family home located in Campos, Mallorca, which has achieved Passivhaus Plus certification. The home has a very low level of air infiltration, with a Blower Door test result of 0.38 ach at 50 Pa.

Ca Na Lola: Mediterranean Passive House

Passivhaus

Praxis cabecera proyectos

Description

Ca Na Lola is a single-family home located in Campos, Mallorca, which has achieved Passivhaus Plus certification. The home has a very low level of air infiltration, with a Blower Door test result of 0.38 ach at 50 Pa. A solar photovoltaic generator installed in the garden generates approximately twice as much energy as the house consumes in an average year.

Ca Na Lola has a timber structure with wood fibre insulation and a mineral mortar render as an exterior finish. The windows are shaded with external blinds and a pergola adds further shading on the south façade.

Mechanical ventilation with heat and moisture recovery is taken care of by a Zehnder Comfoair Q350 ERV unit with Passivhaus component certification for hot climates, recovering both heat and moisture.

A Mitsubishi air-to-water heat pump produces domestic hot water. A second Mitsubishi VRV heat pump delivers underfloor heating and cooling through ducted split units.

Links:

Spanish Passivhaus Platform (PEP) project database 

International Passivhaus Projects database

Year: 2022

Location: Campos, Palma de Mallorca, Islas Baleares

Services:
Passivhaus Consultancy

Casa #SgPi

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

Cramea, High performance sports centre 

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  

Mirador de Gràcia Nursing home

Consultoría Passivhaus para una residencia geriátrica asistida ubicada en Barcelona capital, diseñada por el despacho de arquitectura Genars y promovido por FIATC Seguros a través de FIATC Residencias (Inverfiatc).

Mirador de Gràcia Nursing home

Passivhaus and nZEB

Praxis cabecera proyectos

Description

Passivhaus consultancy for an elderly people residence located in Barcelona capital, designed by Genars architecture studio and developed by FIATC Seguros through FIATC Residencias (Inverfiatc). This 6575 m2 building 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: Barcelona

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

Learnlife Eco Hub: pop-up 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