Thermal performance of lightweight steel-framed construction systems

Santos, Paulo; Martins, Charles Ferreira; Silva, L. Simões da

doi:10.1051/metal/2014035

Cited by 31 publications

(26 citation statements)

References 2 publications

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“…[5] along with an extensive review of the main advantages of this type of construction. As suggested by several authors [3,[6][7][8], LSF construction presents certain advantages over heavyweight construction, such as: small weight with high mechanical strength; reduced disruption onsite and speed of construction; great potential for recycling and reuse; high architectural flexibility for retrofitting purposes; easy prefabrication allowing modular construction, suited to the economy of mass production; economy in transportation and handling; superior quality, precise tolerances and high standards achieved by off-site manufacture control; excellent stability of shape in case of humidity; and resistance to insect damage. However, the high thermal conductivity of steel elements may lead to significant thermal bridges.…”

Section: Introductionmentioning

confidence: 86%

“…Regarding thermal behaviour, LSF construction elements are typically classified according to the location of the thermal insulation [6]. Fig.…”

Section: Classification Of Lsf Construction Elementsmentioning

confidence: 99%

“…Fig. 7 shows the temperature distribution inside different LSF walls as computed by Santos et al [6]. Some general design strategies for the reduction of thermal bridges can be listed:…”

Section: Strategies For Reducing Thermal Bridgesmentioning

confidence: 99%

“…Santos et al [6,8] also suggested some strategies to reduce the effect of repeated thermal bridges, such as: (i) slotted steel stud to increase the heat flux path; (ii) flange stud indentation; (iii) thermal breaks for building components; and (iv) thermal break strips. In the former, longitudinal slots are introduced in the steel stud to reduce the heat flux through the steel elements.…”

Section: Strategies For Reducing Thermal Bridgesmentioning

confidence: 99%

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Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

Soares

Santos

Gervásio

et al. 2017

Renewable and Sustainable Energy Reviews

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The improvement of the use of renewable energy sources, such as solar thermal energy, and the reduction of energy demand during the several stages of buildings' life cycle is crucial towards a more sustainable built environment. This paper presents an overview of the main features of lightweight steel-framed (LSF) construction with cold-formed elements from the point of view of life cycle energy consumption. The main LSF systems are described and some strategies for reducing thermal bridges and for improving the thermal resistance of LSF envelope elements are presented. Several passive strategies for increasing the thermal storage capacity of LSF solutions are discussed and particular attention is devoted to the incorporation of phase change materials (PCMs). These materials can be used to improve indoor thermal comfort, to reduce the energy demand for air-conditioning and to take advantage of solar thermal energy. The importance of reliable dynamic and holistic simulation methodologies to assess the energy demand for heating and cooling during the operational phase of LSF buildings is also discussed. Finally, the life cycle assessment (LCA) and the environmental performance of LSF construction are reviewed to discuss the main contribution of this kind of construction towards more sustainable buildings.

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Section: Introductionmentioning

confidence: 86%

“…Regarding thermal behaviour, LSF construction elements are typically classified according to the location of the thermal insulation [6]. Fig.…”

Section: Classification Of Lsf Construction Elementsmentioning

confidence: 99%

“…Fig. 7 shows the temperature distribution inside different LSF walls as computed by Santos et al [6]. Some general design strategies for the reduction of thermal bridges can be listed:…”

Section: Strategies For Reducing Thermal Bridgesmentioning

confidence: 99%

Section: Strategies For Reducing Thermal Bridgesmentioning

confidence: 99%

See 2 more Smart Citations

Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

Soares

Santos

Gervásio

et al. 2017

Renewable and Sustainable Energy Reviews

Self Cite

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“…Santos et al [23] present some thermal bridge mitigation strategies in LSF buildings. In a developed study within hybrid construction framework, an LSF wall module 1.2 m wide and 2.49 m high (U-value = 0.3011 W·m −2 ·K −1 ) was analysed and three mitigation strategies were studied.…”

Section: Geometric Modelsmentioning

confidence: 99%

The Effectiveness of Thermal Insulation in Lightweight Steel-Framed Walls with Respect to Its Position

Roque

Santos

2017

Buildings

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Lightweight steel-framed (LSF) construction, given its advantages, has the potential to reach high standards in energy and environmental performance of buildings, such as nearly zero-energy buildings (nZEB). When compared with traditional construction, LSF system offers distinct benefits in such fields as sustainability, cost-effectiveness, constructive process, and safety at work. Despite the benefits of this constructive system, the effect of thermal bridges in LSF elements, caused by the high thermal conductivity of the steel structure, can be a disadvantage. The excessive heat losses or gains through these thermal bridges are more relevant in buildings' exterior envelope, such as facade walls. These building components' thermal performance is crucial in the buildings' overall energetic behaviour, with a direct impact on energy consumption and resulting monetary costs during their operational stage. In this work the influence of the thermal insulation position on its effectiveness is evaluated in LSF facade walls. For this purpose, several LSF wall types are assessed, namely cold, warm, and hybrid construction. The influence of thermal bridges instigated by the steel studs in the LSF walls' overall thermal performance is evaluated as well. The computations are performed using specialized finite element software (THERM).

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Enhancing Energy Efficiency of Cold‐formed Steel Framed Walls with Vacuum Insulation Panels

Rajanayagam,

Upasiri,

Poologanathan

et al. 2023

ce papers

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In the current evolving building construction sector, the use of cold‐formed steel frames (CSF) has gained popularity due to their fast, clean, and flexible constructability. On the other side, in terms of the energy efficiency of a building, the use of CSF has raised concerns due to their high thermal conductivity, especially in the case of external wall panels. Hence, it is crucial to examine the thermal performance of such wall configurations and find solutions to reduce heat loss through walls by lowering the thermal transmittance, which would ultimately enhance the energy efficiency of the buildings. Accordingly, this study focuses on analysing the thermal performance of external wall panels made of cold‐formed and thin‐walled steel‐lipped channel studs with plasterboard linings and vacuum insulation panels (VIP). 2D and 3D finite element models developed in ABAQUS were used to analyse the effect of using VIP, oriented strand board and plasterboard, and their positions on the thermal transmittance of the CSF walls. 70 numerical analyses were conducted on 35 wall configurations and the results obtained were checked against the U‐value requirements set by UK building standards. It was found that replacing oriented strand boards with plasterboards does not substantially affect the thermal transmittance of the wall. However, adopting VIP as an insulation material has shown a U‐value reduction of up to 77%. But again, the change in position of VIP in the wall cross section has no notable effect on the U‐value.

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Thermal performance of lightweight steel-framed construction systems

Cited by 31 publications

References 2 publications

Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

The Effectiveness of Thermal Insulation in Lightweight Steel-Framed Walls with Respect to Its Position

Enhancing Energy Efficiency of Cold‐formed Steel Framed Walls with Vacuum Insulation Panels

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