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The use of textiles in building rehabilitation: Brief bibliographic review
Published in Gianni Montagna, Cristina Carvalho, Textiles, Identity and Innovation: In Touch, 2020
B. Moura Dias e Silva, G. Montagna, C. Morais, C. Carvalho
Various types of thermal insulation boards are currently used in external and internal insulation, mostly made by expanded polystyrene (sintered or extruded), expanded polyurethane, glass wool and mineral wool.
Thermal and Mechanical Design
Published in Shen-En Qian, Hyperspectral Satellites and System Design, 2020
Thermal insulation is the reduction in the transfer of thermal energy between objects of differing temperature in thermal contact or in range of radiative influence. It provides a region of insulation in which thermal conduction is reduced or thermal radiation is reflected rather than absorbed by the lower-temperature body. Multilayer insulation (MLI) and single-layer radiation shields are among the most common thermal control insulation applications in spacecraft. MLI blankets are used either to prevent excessive heat loss from a component or excessive heating from environmental fluxes, rocket plumes, and other sources (Donabedian et al. 2002).
Water vapour by diffusion of PIR and mineral wool thermal insulation materials
Published in Mohamad Al Ali, Peter Platko, Advances and Trends in Engineering Sciences and Technologies III, 2019
N.I. Vatin, I.I. Pestryakov, Sh.T. Sultanov, O.T. Ogidan, Y.A. Yarunicheva, A.P. Kiryushina
Due to high performance indicators, the insulation is a considerable interest both for developers wishing to improve the energy efficiency of the constructed buildings, and for private clients interested in the most effective heat insulating material. Many benefits justify the adoption of thicker layers of thermal insulation in buildings. In fact, the use of thermal insulation in buildings helps in reducing the reliance on mechanical air-conditioning systems to realize comfortable buildings, and it allows saving energy by reducing the heat flux through the building envelope. Meanwhile, the reduced energy demand achieved by using more effective thermal insulating layers also reduces the needed HVAC equipment. The thermal insulation in building enclosure extends the periods of indoor thermal comfort, especially between seasons, and by keeping buildings with smaller temperature fluctuations, it helps in preserving the integrity of building structures, increasing their lifetime).
Effects of weaving parameters on acoustic and thermal insulation properties of handmade carpets
Published in The Journal of The Textile Institute, 2023
Homa Maleki, Rouhollah Semnani Rahbar, Seyed Alireza Zolfaghari
Thermal insulation is the feature of a material to diminish or transfer of heat flow. In fact, it is the resistance or prevention of heat transfer in the surface area. Lower thermal conductance provides higher resistance to heat transfer within the material, and hence, better insulation performance (Küçük & Korkmaz, 2019; Zhang et al., 2018). Heat transfer through textile materials and thus carpets can occur by radiation, convection through air movement in the pile, and conduction within the pile and the backing fibers and air trapped therein (Bakker, 2018; Islam & Bhat, 2019). Heat transmission due to radiation can be diminished by applying absorbent or reflective substrates. Conductive heat transfer can be controlled by using less conductive materials and breaking the continuous structure. Stationary air is a great insulator, but moving air causes heat dissipation due to convection. In a carpet, the piles restrict the air motion by trapping that within fibers. Also, the radiant heat is barricaded by the fibers rather than the air. While, fibers conduct heat better than the stationary air (Islam & Bhat, 2019; Smith et al., 2013; Stanković et al., 2008). Thermal insulation properties of a textile material depend on its porosity and tortuosity (ratio of the open pores length and the thickness). Thus, the thermal insulation function of the carpet can be affected by its construction, and the pile fiber (Bakker, 2018; Islam & Bhat, 2019). Therefore, a comprehensive compromise is required to gain the optimal insulation performance.
Modelling thermal and humidity transfers within green roof systems: effect of rubber crumbs and volcanic gravel
Published in Advances in Building Energy Research, 2022
The concept of thermal insulation can be referred to as the reduction of heat transfer between objects of differing temperature (Deshmukh et al., 2017). For the thermal insulation performance of materials, three indicators have been introduced including thermal inertia index, thermal resistance and thermal storage coefficient, which are attributed to the temperature fluctuation (CABR, 2014; Ling et al., 2016). Recently, the thermal performance of green roof with the drainage layer of perlite, expanded clay and rubber crumbs was assessed by Cascone et al. (2018). They concluded that, the use of green roof decreased the energy consumption for the cooling of building by 31–35% during the summer period. The corresponding value for heating was 2–10% during the cold period. Meanwhile, the diurnal temperature fluctuations of building with the green roof decreased in comparison to that with the traditional roof, owing to higher thermal inertia generated by the drainage layer and substrate.
Energy efficiency of residential buildings in Tehran climate by saving energy
Published in International Journal of Ambient Energy, 2023
Mohammad Ebadati, Alireza Lork, Mohammad Hadi Alizade Elizei
Insulation is a composite material or system that effectively reduces heat transfer from one environment to another. Under special conditions, air can also be considered thermal insulation. Also, thermal insulation can facilitate heat transfer, such as soundproofing. In this research, the word insulation is equivalent to thermal insulation. Insulation and its culture in developed countries are a principle in design and a requirement in construction, while the importance of this principle in Iran has not been taken seriously. However, in recent years after the increasing costs of energy in Iran and the world, especially after the removal of energy subsidies, the use of thermal insulation and sound and anti-fire insulation construction sector and industry has grown significantly, creating a promising future in this area. Thermal insulation is a material that reduces the rate of heat transfer between different physical systems and, in simpler terms, prevents the loss of thermal energy of a system as much as possible. Heat always flows from systems with higher temperatures to plans with lower temperatures, and this phenomenon is inevitable. But the rate of this flow can be drastically reduced, which is the primary purpose of thermal insulation. There are various thermal insulators to prevent heat transfer mechanisms. Thermal insulation minimises thermal energy loss in buildings, structures, industries, and equipment, leading to energy savings. Also, by optimising energy consumption and saving energy costs through insulation, the capacity of the required heating and cooling system can be reduced, thus reducing the volume of investment in ventilation and heating systems (Ebadati, Ebadati, and Ebadati 2021). Insulations used in this research include glass wool insulation, rock wool insulation, polyurethane insulation, and elastomeric insulation.