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Use of simulation software to predict and optimize future heating demands of a family house
Published in Mohamad Al Ali, Peter Platko, Advances and Trends in Engineering Sciences and Technologies III, 2019
The main use of phenolic foam in construction is as thermal insulation, to improve is thermal efficiency. The thermal efficiency of the existing building stock is of prime concern, if carbon emissions targets are to be met. For those homes with solid walls, external wall insulation can be an effective method of improving their thermal efficiency. Phenolic foam is starting to be popular material choice for external wall insulation systems owing to its low thermal conductivity and good fire performance (Densley, Tingley, Hathway, Davison, Allwood, 2017). Phenolic foam is made from three main components: phenolic resin, a blowing agent and an acid catalyst; a number of additives can also be utilised to develop specific properties within the foam. There are patents and other information available at (International Patent Application No. PCT/IE2006/000096) that describes the chemicals used to manufacture phenolic foam.
Retrofitting buildings
Published in Jane Powell, Jennifer Monahan, Chris Foulds, Building Futures, 2015
Jane Powell, Jennifer Monahan, Chris Foulds
There are different methods of achieving these U-values. For example, external wall insulation can involve different types (mineral fibre or foamed plastic board insulation) and thicknesses of insulation (typically 50–250 mm), plus cement and sand or polymer rendering, or use cladding such as timber or metal (Construction Products Association, 2010). Although external wall insulation is more continuous than internal insulation, which has internal walls to contend with, there are detailing problems associated with external installation. For instance, where the wall joins the roof the additional wall width might result in the need for significant changes to the roof structure (Figure 5.6) (Galvin, 2011). Services, such as external pipes and guttering, may also need to be repositioned (Construction Products Association, 2010).
A comprehensive state-of-the-art review of sustainable thermal insulation system used in external walls for reduction in energy consumption in buildings
Published in International Journal of Green Energy, 2023
K. S. Dhaya Chandhran, S. Elavenil
A layer of insulation material fixed to an existing wall is termed External wall insulation. The external wall insulation does a little favor in reducing heat loss and energy bills, increasing the sense of comfort, keeping the interior floor area with no disruption, preventing the thermal bridge condensation problem, improving sound resistance, reducing damping problems and increasing the durability of the wall (German 2010; Rojas et al. 2019; Yuan 2018). Moreover, the long-term maintenance costs of the building are reduced by improving service life since it reduces the strain caused by temperature changes also as weather changes. The aesthetics of the building can even be enriched by the usage of a range of designs of materials (Kisilewicz 2019; Kumar and Suman 2013; Morsy et al. 2017; Porritt et al. 2012). The mode of heat transfer and temperature profile in a wall with and without insulation is explained in Figure 1. The insulated wall has more temperature resistance than normal wall (T2>T3).
The economic and environmental combination between building materials and fuel source to improve building energy performance
Published in International Journal of Ambient Energy, 2022
Rakshit Doddegowdankoppal Muddu, Fohagui Fodoup Cyrille Vincelas, Tchuen Ghislain, Aimee Byrne, Tchitnga Robert, Anthony James Robinson
One of the main determining factors influencing the performance of a building is the thermal behaviour of the building envelope. External wall insulation has been found to be one of the most cost-effective options for achieving low energy consumption and greenhouse gas emissions (Nematchoua et al. 2017; Piotrowski et al. 2014; Dylewski and Adamczyk 2011). The selection of suitable insulation material depends on both its cost and thermal characteristics. In particular, the performance of the insulation material depends on its thermal resistance which is a function of its thickness. Therefore, the procedural study of finding the insulation thickness, for a given thermal conductivity of the material, which requires minimum upfront cost and results in maximum long-term heat and energy savings throughout its service period is typically referred to as ‘optimisation of insulation’ or ‘optimisation of insulation thickness’ (Ozel 2014; Mishra, Usmani, and Varshney 2012). The concept of optimisation in systems was used by many authors including thermodynamic optimisation (Kohole and Tchuen 2017; Sadatsakkak et al. 2015) and thermo-economic optimisation (Ahmadi et al. 2013a, 2013b, 2015; Fohagui and Ghislain 2017).
Façade cool coatings: an experiment on colour and surface quality
Published in Intelligent Buildings International, 2021
Since coatings for external wall insulation were the strength point of the industry partner’s production, the objective of the research was to develop a ∼3 mm coloured coating to be applied on external wall insulation (EWI) (Hopper et al. 2012). External wall insulation systems are built up from different layers: a thermal insulation material (EPS, Mineral Wool or other); a scrim adhesive; a glass fibre mesh; and the finish (also called render or coating). Among them, the insulation material is considered to be the main component (Densley Tingley, Hathway, and Davison 2015). Several studies have demonstrated the importance of the insulation layer for a building’s performance (Dylewski and Adamczyk 2011). Fewer studies have focused their attention on the qualities of the render.