Abstract:Thermo-physiological properties of textiles are crucial in determining the heat and moisture transport from skin to environment and
in the assessment of overall wearer comfort. Engineering fabrics with desirable thermo-physiological properties suited for specific applications such as active wear, intimate wear is a big challenge for textile manufacturers as gamut of fibre, yarn and fabric parameters are known to influence the thermo-physiological properties. The present study was undertaken with an aim to exp… Show more
“…in Table 3, (Giada et al, 2019) (Robertson, 1988) ("PU-W-ST polyurethane core sandwich panel," n.d.) (P. INCROPERA et al, 2007) (Brischke and Humar, 2017) (Jhanji et al, 2015). The HAS models are shown also in Figure 7.…”
Abstract. Syria has been struggling through a continuous conflict for more than nine years so far. This conflict has had a disastrous consequence, for not only Syria urban areas but also its world heritage and historical sites. Moreover, the ongoing conflict resulted in the displacement of over 13 million people that is more than half the population; including more than 6.1 million internally displaced. This long-term encampment is a growing aspect of a growing refugee crisis. The Syrian refugees have to face another crisis in the camps due to a significant shortage of resources and support. One solution was using earthen buildings that have been a traditional architectural style in Syria for 11 thousand years. As a part of the cultural heritage, it depends on community participation and achieves environmental and economic efficiency in addition to preserving memory and identity of the place. This paper discusses the creation of sustainable shelters through the revival of heritage vernacular earthen architecture in northern Syria. A comparative analysis was conducted between the humanitarian agencies shelters (HAS) and different historical vernacular dwellings (HDS) from the same region with an arid steppe climate (hot summer and a short cold winter); they were modelled in numerical thermal simulations framework as a means to assess the shelters’ building energy demand and indoor comfort quality. The comparison resulted in the superiority of the heritage dwelling. The paper is concluded with passive approach optimization to the different historical earthen domes with consideration of the historical characteristics and background.
“…in Table 3, (Giada et al, 2019) (Robertson, 1988) ("PU-W-ST polyurethane core sandwich panel," n.d.) (P. INCROPERA et al, 2007) (Brischke and Humar, 2017) (Jhanji et al, 2015). The HAS models are shown also in Figure 7.…”
Abstract. Syria has been struggling through a continuous conflict for more than nine years so far. This conflict has had a disastrous consequence, for not only Syria urban areas but also its world heritage and historical sites. Moreover, the ongoing conflict resulted in the displacement of over 13 million people that is more than half the population; including more than 6.1 million internally displaced. This long-term encampment is a growing aspect of a growing refugee crisis. The Syrian refugees have to face another crisis in the camps due to a significant shortage of resources and support. One solution was using earthen buildings that have been a traditional architectural style in Syria for 11 thousand years. As a part of the cultural heritage, it depends on community participation and achieves environmental and economic efficiency in addition to preserving memory and identity of the place. This paper discusses the creation of sustainable shelters through the revival of heritage vernacular earthen architecture in northern Syria. A comparative analysis was conducted between the humanitarian agencies shelters (HAS) and different historical vernacular dwellings (HDS) from the same region with an arid steppe climate (hot summer and a short cold winter); they were modelled in numerical thermal simulations framework as a means to assess the shelters’ building energy demand and indoor comfort quality. The comparison resulted in the superiority of the heritage dwelling. The paper is concluded with passive approach optimization to the different historical earthen domes with consideration of the historical characteristics and background.
“…Fabric porosity was determined using the following equation 15 where P is the fabric porosity (%), m is the fabric area density (g/m 2 ), ρ is the yarn density (kg/m 3 ) and h is the fabric thickness (mm).…”
The impact of different structural parameters on the thermal insulation of glass fiber fabrics, by using numerical simulation, was investigated. The structural parameters investigated were the weave structure, warp density and yarn fineness. A series of structure models were calculated under the same boundary and initial conditions, which combine thermal radiation, conduction and convection. The simulation results have been validated by experiments. The experimental results and the predictions from numerical simulations were in good agreement. The results show that thermal insulation for the samples is in the order plain < 2/1 twill < 2/2 twill < 2/3 twill < 3/3 twill fabric, when using constant structure density and yarn fineness. Increasing the warp density, from 110 to 160 ends/10 cm, leads to a significant decrease in heat transfer performance. When the warp density increases to more than 160 ends/10 cm, the thermal insulation property shows a decreasing trend with an increase in warp density. Furthermore, thermal insulation performance of the samples dramatically increases as yarn fineness goes from 129 to 280 tex, and then decreases for yarn fineness greater than 280 tex. This study will provide the theoretical basis for the thermal design and application of fibrous materials.
“…Even so, if the supply of appropriate microclimate to the skin is absent, discomfort may occur as a consequence from wetness or thermal sensation from moisture accumulation and overheating. At this point, clothes should be able to absorb and transmit away moisture to make users comfortable by staying dry (Jhanji et al , 2015) and this is strongly determined by the characteristics of textile material and their comfort perception (Fan and Tsang, 2008).…”
Purpose
The purpose of this paper is to investigate the perceived thermal comfort experienced by active Muslim women (AMW) wearing hijabs determined by their experience of comfort sensation while doing sports activities or regular exercises. This study also examines whether the casual hijabs which are widely used among AMW are able to supply the appropriate comfort for active purposes.
Design/methodology/approach
This study used the quantitative method using survey questionnaires to collect 100 primary data obtained from AMW respondents who are university students located around the Klang Valley region in Malaysia.
Findings
Based on the overall results, this study suggests that the common hijabs that are used for casual applications do not offer sufficient comfort to Muslim women while performing sports activities or regular exercises.
Research limitations/implications
The outcome of this study will help to gain a better understanding on hijab preferences and comfort experienced from the viewpoint of regular hijab users. The information will assist industries to consider the selection of the right materials when developing sportswear hijabs to provide better comfort for more AMW in the near future. The method used in this study is useful to gain information on consumer’s profile and value-added details about the discomfort aspects of hijab which are scarce in the existing literature on thermal comfort.
Originality/value
This study was conducted to explore the type of hijabs commonly worn by AMW while performing sports activities and to obtain their views on the perceived thermal comfort.
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