Experimental Studies Involving the Impact of Solar Radiation on the Properties of Expanded Graphite Polystyrene

Krause, P.; Nowoświat, Artur

doi:10.3390/en13010075

Cited by 19 publications

(10 citation statements)

References 23 publications

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“…Krause and Nowoświat [6] carried out in situ tests and laboratory studies to evaluate the impact of solar radiation on the behavior of expanded polystyrene with the addition of graphite. Temperature distributions were determined in field and laboratory conditions were determined on the surfaces of three types of panels: (A) two-layer polystyrene (gray bottom layer and white top layer); (B) polystyrene with the addition of graphite (gray polystyrene); and (C) expanded polystyrene (EPS) (white polystyrene).…”

Section: Lab Test Procedures and Methods Of Field Measurement To Assementioning

confidence: 99%

Special Issue “Building Thermal Envelope”

Brito

Gomes

2020

Energies

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Section: Lab Test Procedures and Methods Of Field Measurement To Assementioning

confidence: 99%

Special Issue “Building Thermal Envelope”

Brito

Gomes

2020

Energies

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“…Table 1 presents the relationship between severity of degradation, S w , and degradation condition, C. A limitation of this classification system is the fact that it does not directly assess the condition of the insulation boards. A damage insulation board can significantly influence the performance of the ETICS [4,10,11]. In this study, the condition of ETICS is analysed based only in visual inspections and, for a strict assessment of the thermal insulation boards, destructive tests must be carried out, which is rarely feasible in practice.…”

Section: Degradationmentioning

confidence: 99%

“…Furthermore, the authors conclude that the existence of defects increase the risk of vulnerability to premature degradation and, consequently, affects the ETICS' performance over time. Krause and Nowoświat [10,11] studied the influence of solar radiation intensity on unprotected thermal insulation boards during the construction works. The results reveal that strong radiation intensity and windless conditions can damage the insulation boards, affecting their physical properties.…”

Section: Introductionmentioning

confidence: 99%

Condition-Based Maintenance Strategies to Enhance the Durability of ETICS

et al. 2021

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The increase of awareness with sustainability and the desire of reducing the energy consumption in the construction sector haved increased the application of External Thermal Insulation Composite Systems (ETICS) across Europe in the last decades. Nevertheless, the implementation of appropriate maintenance strategies is still neglected. The aim of this study is to analyse the impact of different maintenance strategies. For that purpose, a condition-based maintenance model, based on Petri nets, is used to evaluate three maintenance strategies: MS1—total replacement only; MS2—combination of minor intervention and total replacement; and MS3—combination of cleaning operations, minor intervention, and total replacement. In the end, a multi-criteria analysis is used to discuss the impact of the three maintenance strategies proposed, evaluating the remaining service life, the global costs over time, the ETICS’ degradation condition, and the number of replacements (end of service life) over the time horizon. For this purpose, a sample of 378 ETICS was analysed, based on in situ visual inspections, carried out in Portugal. The results from this study reveal that maintenance plays an important role to increase the durability of ETICS, and therefore their sustainability. Regular maintenance can promote the extension of the ETICS’s service life between 88% and 159% (between 15 to 27 years), improve the global degradation condition of the ETICS, and reduce the impact on users by reducing the number of deeper interventions. Further research is essential to optimise the maintenance strategies (time interval between inspections, stakeholders’ performance criteria, and environmental exposure).

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“…However, due to the low thermal stability, XPS is easily affected by high temperature and intense solar radiation [ 7 ], which damages the characteristics of XPS. In addition, XPS is flammable, more and more building fires can be attributed to XPS, such as Grenfell Tower [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis Kinetic Properties of Thermal Insulation Waste Extruded Polystyrene by Multiple Thermal Analysis Methods

Zhang

et al. 2020

Materials

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Extruded polystyrene (XPS) is a thermal insulation material extensively applied in building systems. It has attracted much attention because of outstanding thermal insulation performance, obvious flammability shortcoming and potential energy utilization. To establish the reaction mechanism of XPS’s pyrolysis, thermogravimetric experiments were performed at different heating rates in nitrogen, and multiple methods were employed to analyze the major kinetics of pyrolysis. More accurate kinetic parameters of XPS were estimated by four common model-free methods. Then, three model-fitting methods (including the Coats-Redfern, the iterative procedure and masterplots method) were used to establish the kinetic model. Since the kinetic models established by the above three model-fitting methods were not completely consistent based on different approximations, considering the effect of different approximates on the model, the reaction mechanism was further established by comparing the conversion rate based on the model-fitting methods corresponding to the possible reaction mechanisms. Finally, the accuracy of the above model-fitting methods and Particle Swarm Optimization (PSO) algorithm were compared. Results showed that the reaction function g(α) = (1 − α)−1 − 1 might be the most suitable to characterize the pyrolysis of XPS. The conversion rate calculated by masterplots and PSO methods could provide the best agreement with the experimental data.

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Experimental Studies Involving the Impact of Solar Radiation on the Properties of Expanded Graphite Polystyrene

Cited by 19 publications

References 23 publications

Special Issue “Building Thermal Envelope”

Special Issue “Building Thermal Envelope”

Condition-Based Maintenance Strategies to Enhance the Durability of ETICS

Pyrolysis Kinetic Properties of Thermal Insulation Waste Extruded Polystyrene by Multiple Thermal Analysis Methods

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