Timber buildings and thermal inertia: Open scientific problems for summer behavior in Mediterranean climate

Tonelli, Chiara; Grimaudo, Maddalena

doi:10.1016/j.enbuild.2013.12.063

Cited by 33 publications

(15 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermal response parameter (TRP) is an indicator of ignition time delay after the materials being exposed to the q ex . It defines as

TRP = {(\frac{π}{4} k ρ c_{p})}^{0.5} (T_{normalig} - T_{\infty})

where the product of the thermal conductivity k , density ρ, and heat capacity c p of the specimen is called the thermal inertia . The TRP is calculated by Equation , which is the slope of the fitted curve in Figure b

t_{ig} = {(\frac{normalTRP}{q_{normalex}})}^{2}

…”

Section: Resultsmentioning

confidence: 99%

Dense, Self‐Formed Char Layer Enables a Fire‐Retardant Wood Structural Material

Gan

Chen

Wang

et al. 2019

Adv Funct Materials

157

View full text Add to dashboard Cite

Wood is one of the most abundant, sustainable, and aesthetically pleasing structural materials and is commonly used in building and furniture construction. Unfortunately, the fire hazard of wood is a major safety concern for its practical applications. Herein, an effective and environmentally friendly method is demonstrated to substantially improve the fire-retardant properties of wood materials by delignification and densification. The densification process eliminates the spaces between the cell walls, leading to a highly compact laminated structure that can block oxygen from infiltrating the material. In addition, an insulating wood char layer self-formed during the burning process obstructs the transport of heat and oxygen diffusion. These synergistic effects contribute to the material's excellent fire-retardant and self-extinguished properties, including a 2.08-fold enhancement in ignition time (t ig ) and 34.6% decrease in maximum heat release rate. Meanwhile, the densified wood shows a more than 82-fold enhancement in compressive strength compared with natural wood after exposure to flame for 90 s, which could effectively prevent the collapse and destruction of wooden structures, and gain precious rescue time when a fire occurs. The facile top-down chemical delignification and densification process enabling both substantially enhances fire-retardant performance and mechanical robustness represents a promising direction toward fire-retardant and high-strength structural materials.

show abstract

“…Thermal response parameter (TRP) is an indicator of ignition time delay after the materials being exposed to the q ex . It defines as

TRP = {(\frac{π}{4} k ρ c_{p})}^{0.5} (T_{normalig} - T_{\infty})

t_{ig} = {(\frac{normalTRP}{q_{normalex}})}^{2}

…”

Section: Resultsmentioning

confidence: 99%

Dense, Self‐Formed Char Layer Enables a Fire‐Retardant Wood Structural Material

Gan

Chen

Wang

et al. 2019

Adv Funct Materials

157

View full text Add to dashboard Cite

show abstract

“…This paper takes a holistic approach and finds that the total scope of environmental impacts can come from a broad scope of factors. For example, it can be through the technological advancement such as Computer Numerical Control(CNC) machines (Da Rocha et al 2015;Tonelli and Grimaudo 2014), through digital information that allows tracking materials along the supply chain, or through production efficiency that reduces waste. Overall, we find that the associated environmental impacts of IH are an improvement to conventional methods, although there are some exceptions.…”

Section: Discussionmentioning

confidence: 99%

“…Research by Aye et al (2012) finds that the operational energy of IH is similar to operational energy and emissions simulations of conventional buildings. In contrast, Rodrigues et al (2016) and Tonelli and Grimaudo (2014) find the use of lightweight materials in IH reduces the thermal mass of the building. Depending on the location of the building, this could have positive or negative energy performance.…”

Section: Operational Phasementioning

confidence: 94%

See 1 more Smart Citation

Assessing the Environmental Implications of Industrialized Housing: a Systematic Literature Review

Kedir

Hall

2019

mocs

View full text Add to dashboard Cite

Industrialized Housing (IH), also referred to as prefabrication, preassembly, modularization, and/or off-site fabrication, is a growing strategy for constructing housing. IH offers potential for significant reduction of environmental impact in comparison to traditional housing construction. Past research used methods such as environmental impact assessment on given case study buildings or expert’s opinions to identify the benefits and drawbacks present on the lifecycle of houses constructed partially or fully using IH methods. Nevertheless, this literature is scattered across several sources and units of analysis. The specific factors of IH that contribute to environmental impact reduction have not been comprehensively reviewed and summarized from design considerations up to the end of life possibilities. In this paper, a systematic literature review is performed on the environmental implications of the industrialized way of constructing residential buildings. From a review of 49 journal publications, this paper identifies 18 key factors that influence the environmental performance of such residential buildings. These factors are categorized into the following lifecycle phases of the IH process: a) system design, b) material design, c) manufacturing and logistics, d) transportation and assembly, e) Operational phase, and f) end of life. Findings reveal the importance of decisions made in design phases such as choice of materials, which in turn show a snowball effect throughout the phases. A final category – g) support and hindrance of IH - includes a discussion of external factors such as building codes and regulatory policies and their impact on IH performance.

show abstract

“…RhOME building has been certified as Active House [40] for the Solar Decathlon venue (Paris) making possible a consistent comparison between the continental climate (of the certification -Paris) and the Mediterranean one (of the optimization -Rome), assessing the sensitivity of the AH ranking method to warmer climatic contexts.…”

Section: Cooling Systemmentioning

confidence: 99%

Comfort analysis applied to the international standard “Active House”: The case of RhOME, the winning prototype of Solar Decathlon 2014

Brambilla

Salvalai

Tonelli

et al. 2017

Journal of Building Engineering

View full text Add to dashboard Cite

The relationship between indoor comfort and climatic context is essential to assure a superior liveable environment for occupants. The international approach called Active House (AH) proposes a ranking system to evaluate the provided indoor comfort, which is the same through the whole Europe, without acknowledging the variety of social-cultural contexts of each country. This paper aims to understand whether the AH methodology can be proposed both for continental and Mediterranean climates, evaluating the indoor comfort performances of a single-family home in four different climatic conditions, representative of different climate severities. The RhOME for denCity building, the winning prototype of the international competition Solar Decathlon 2014, has been used as experimental case study. From the results a variation of the AH comfort thresholds is proposed to fulfil the cultural and social environment of warm regions, considering the acclimatization process which arise the boundary of comfort acceptability. The proposed new comfort threshold still provide high thermal comfort expectation with an energy saving estimation of about 1.7% for each half degree Celsius reduction.

show abstract

Timber buildings and thermal inertia: Open scientific problems for summer behavior in Mediterranean climate

Cited by 33 publications

References 1 publication

Dense, Self‐Formed Char Layer Enables a Fire‐Retardant Wood Structural Material

Dense, Self‐Formed Char Layer Enables a Fire‐Retardant Wood Structural Material

Assessing the Environmental Implications of Industrialized Housing: a Systematic Literature Review

Comfort analysis applied to the international standard “Active House”: The case of RhOME, the winning prototype of Solar Decathlon 2014

Contact Info

Product

Resources

About