Passivhaus

Moreno-Rangel, Alejandro

doi:10.3390/encyclopedia1010005

Cited by 22 publications

(11 citation statements)

References 24 publications

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“…Consequently, we computed the material quantity (kg/m RES 2 ) and the related GHG emissions (kg CO 2eq /kg) to calibrate the climate neutrality for the three diets. The herbaceous material quantity corresponds to a specific insulation thickness whose architectural and structural feasibility is assessed to respond to the maximal linear loads allowed according to the structural preliminary dimensioning (see Supporting Information Paragraph 1.2.4) and passive house requirements for the operational energy targets . Finally, the 100-year time horizon global warming potentials (GWP 100 ) and the 20-year time horizon global warming potentials (GWP 20 ) for each BT and material diet are compared for evaluation, as a long-term horizon may hide the contribution of material shifts to biobased diets to reach climate neutrality by 2050 (see Supporting Information Paragraph 3).…”

Section: Materials and Methodsmentioning

confidence: 99%

Material Diets for Climate-Neutral Construction

Carcassi

Habert

Malighetti

et al. 2022

Environ. Sci. Technol.

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The climate crisis is urging us to act fast. Buildings are a key leverage point in reducing greenhouse gas (GHG) emissions, but the embodied emissions related to their construction often remain the hidden challenge of any ambitious policy. Therefore, in this paper, we explored material GHG neutralization where herbaceous biobased insulation materials with negative net-global warming potentials (GWPs) were used to compensate for building elements that necessarily release GHGs. Different material diets, as well as different building typologies, were modeled to assess the consequences in terms of biobased insulation requirements to reach climate neutrality. Our results show that climate-neutral construction can be built with sufficient energy performance to fulfill current standards and with building component thicknesses within a range of 1.05–0.58 m when timber- and bamboo-based construction is chosen. Concrete-based ones require insulation sizes that are too large and heavy to be supported by the dimensioned structures or accepted by urban regulations. Moreover, a time horizon of 20 years is more appropriate for assessing the contribution of material shifts to biobased materials in the transition period before 2050. This paper demonstrates that this is technically feasible and that climate neutrality in the construction sector just depends on the future that we choose.

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Section: Materials and Methodsmentioning

confidence: 99%

Material Diets for Climate-Neutral Construction

Carcassi

Habert

Malighetti

et al. 2022

Environ. Sci. Technol.

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“…Even if the Passivhaus Institut was founded in 1996 [49], the standard did not arrive in Spain until 2009, when the first certified building, a single-family house, was constructed in Moraleda de Zafayona, Granada [50]. Over the next 12 years, at least 255 buildings were certified in Spain under the PH standard, including refurbishments, 26 of which were located in the Basque Country and 21 in the neighboring Navarra.…”

Section: Implementation Of Private Green Building Certificates In Spa...mentioning

confidence: 99%

Comparative Analysis of the Effect of the Evolution of Energy Saving Regulations on the Indoor Summer Comfort of Five Homes on the Coast of the Basque Country

et al. 2022

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In the last decade, several European directives have been established to contribute to the 2020, 2030 and 2050 energy saving targets and impose energy efficiency requirements for new construction, existing buildings and building renovation operations. One of the ways to achieve said objectives is to rely on the most demanding energy efficiency labels existing in Europe, such as Passivhaus, and to implement similar concepts into the national energy regulations of European countries based on a high-performance thermal envelope (high insulation and high-performance windows), high airtightness and high-performance heat-recovery ventilation systems, and solar heat harvesting. This energy conservation concept has shown to be effective for houses with low-density occupation in cold climates, but may cause severe overheating problems in denser collective housing in temperate and hot climates with higher solar radiation. To assess this impact, five flats in three developments from different periods that range from no insulation at all to a nZEB, Passivhaus-certified high-rise are compared in this paper, using data from a monitoring campaign during the summer of 2020. The results show and quantify the strong impact the evolution of the energy saving regulatory trend has had on summer indoor comfort, which may in some cases lead to previously unnecessary air conditioning for cooling and, ultimately, be counterproductive towards the end goals of reducing energy consumption and greenhouse-effect gas emissions and mitigating climate change.

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“…The current study aims to investigate the benefits of using an efficient insulation technique on the thermal performance of building elements, namely: wall, roof and foundation. The technique has followed Passive House design which is globally recommended as energy efficient building criteria [18][19][20]. The work introduces experimental results for two building models; one is efficiently insulated and the other is traditional.…”

Section: Introductionmentioning

confidence: 99%

The impact of efficient insulation on thermal performance of building elements in hot arid region

Abdulsada

Salih

2022

Renew. Energy Environ. Sustain.

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The application of thermal insulation technique for buildings in hot arid region still under development and requires investigation for many aspects, especially those related to the individual elements of the construction. The present study investigates the impact of efficient insulation on the thermal performance of the following construction elements: wall, roof and foundation. The techniques used for the insulation have followed the Passive House criteria. The study introduces many benefits for passive design of the building in extreme hot climate. The work has done experimentally in Kirkuk, Iraq for two building models; one is efficiently insulated and the other is traditional. The data, which are collected in summer time, show reduction in indoor temperature of the efficient model by 8 °C in average comparing to that of traditional one. Measurements show stability in the internal wall temperatures for efficient model with an average temperature of 33 °C comparing to 42 °C for traditional one. Similarly, the insulated roof radiates less heat into the indoor than that of traditional model. Furthermore, the effect of both efficient insulated roof and canopy shading reduces the temperature of internal surface temperature of the roof by 12 °C comparing to the traditional model. A local simulation program based on ASHRAE relations has shown an energy saving in the cooling load up to 70%.

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Passivhaus

Cited by 22 publications

References 24 publications

Material Diets for Climate-Neutral Construction

Material Diets for Climate-Neutral Construction

Comparative Analysis of the Effect of the Evolution of Energy Saving Regulations on the Indoor Summer Comfort of Five Homes on the Coast of the Basque Country

The impact of efficient insulation on thermal performance of building elements in hot arid region

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