Infrared reflective wall paint in buildings: Energy saving potentials and thermal comfort

Malz, Sebastian; Krenkel, Walter; Steffens, Oliver

doi:10.1016/j.enbuild.2020.110212

Cited by 28 publications

(5 citation statements)

References 28 publications

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“…Enhanced sensitivity allows the detection of minute temperature differentials, broadening the spectrum of detectable issues. Emerging multi-spectral imaging extends the boundaries of data capture, facilitating comprehensive diagnostics by considering a wider range of information beyond the thermal domain [59,129,130].…”

Section: Condition Monitoringmentioning

confidence: 99%

Innovations in Building Diagnostics and Condition Monitoring: A Comprehensive Review of Infrared Thermography Applications

Kim,

Lamichhane,

Kim

et al. 2023

Buildings

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Infrared thermography is a non-destructive technique that uses infrared radiation to visualize surface temperature variations. It is a versatile tool that can be used to detect a variety of problems in buildings, including insulation deficiencies, moisture intrusion, structural compromise, and electrical faults. The review paper discusses the fundamental principles of infrared thermography, the different types of infrared approaches, and the condition monitoring of buildings using infrared imaging techniques. It also discusses research showing how infrared thermography has been applied to recognize and solve different building-related problems. The article highlights the potential for infrared thermography to advance while also acknowledging its current limits. Infrared thermography is predicted to become an even more effective technique for building diagnostics with the development of more sensitive cameras and the incorporation of artificial intelligence.

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Section: Condition Monitoringmentioning

confidence: 99%

Innovations in Building Diagnostics and Condition Monitoring: A Comprehensive Review of Infrared Thermography Applications

Kim,

Lamichhane,

Kim

et al. 2023

Buildings

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“…Typically, cool materials have high solar reflectance and infrared emittance [52,53]. By employing materials with tuned absorption and reflection of specific spectral wavelengths, the total energy absorbed by the surface where the cool pigment is applied is reduced [54,55,56]. According to Gobakis et al [57], the definition of cool roofing materials depends on the specific Certification Program, but usually is required a minimum of 0.65 for solar reflectance and 0.85 for thermal emittance.…”

Section: Nanomaterials In Building Envelopesmentioning

confidence: 99%

Nanomaterials with high solar reflectance as an emerging path towards energy-efficient envelope systems: a review

et al. 2021

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The application of nanomaterials in the construction field is allowing the development of smart, green, durable and more efficient buildings. Among the most widely researched nanomaterials are nano-sized cool pigments, which are being enforced to achieve thermal and energy efficient façades, with the development of high reflectance and retroreflectance coatings. Their peculiar optical and catalytic activity turns nanomaterials into suitable candidates to be use as dark coloured high solar reflectance without affecting aesthetic characteristics, thus improving the durability of coatings. The objective of this paper is to review the state-of-the-art on the benefits of using high reflectance nano pigments as coatings in building façades and their production and synthesis processes. It is thus divided into three main topics: (i) the benefits of using nanopigments on façades, (ii) the most important nanomaterials used as cool pigments and (iii) the main methods of synthesising nanopigments. One expects that the study of near-infrared nanopigmentation synthesis processes will be able to promote and disseminate the use of nanotechnology in construction, assessing the production problems and limitation and thus helping to disseminate new products by reducing production costs and increase availability.

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“…A light colour coating absorbs less solar radiation compared to dark colors which results in lower heat transfer through the building envelope [44]. The high reflective coating materials was found to reduce heat transfer through the envelope by 18% [45] and improve thermal comfort by 22% [24] in traditional German buildings depending on structure heat storage and resistance capacity, and climatic conditions. Retrofitting the detached Dutch house with low-emissivity coating dropped the overheating hours by 89% [40].…”

Section: Reducing Solar Heat Gainmentioning

confidence: 99%

Building Adaptation to Extreme Heatwaves

Kumar

Alam

Sanjayan

2021

Springer Tracts in Civil Engineering

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Climate change is aggravating the summer heatwaves, making them more severe, frequent and prolonged. During the heatwave period, buildings are overheated due to heat gain from surroundings which poses significant risks to the occupants. Therefore, adapting our buildings to extreme heatwaves is of paramount importance. This chapter aims to identify the factors contributing to overheating buildings and the associated mitigation measures. The identified overheating factors are low energy building design, lightweight construction materials, internal heat gain, occupant behaviour and urban heat island effect. The overheating mitigation measures are divided into four categories (1) Modification of local microclimate, (2) resistance to heat transfer from outdoor to indoor (3) Absorption of transferred heat through thermal mass, and (4) Release of trapped heat from indoor to outdoor. The effectiveness of each mitigation measure category depends on indoor and outdoor environmental conditions. Numerical analysis showed that the risk of experiencing heat stress during extreme heatwave decreases with increasing energy star rating of the houses in Melbourne, Australia. If the entire existing lower energy star rated houses can be upgraded to 5.4 star, the percentage of Melbourne population experiencing six severe heat stress hours will decrease from 50% to only 4% at 36 °C mean outdoor temperature. The heat-related mortality and morbidity also decreases with increasing house energy rating. Net-benefit analysis showed that upgrading the lower energy rated houses to 5.4 star is highly beneficial with net-benefit becoming positive within 2-5 years. Emerging technology like dynamic insulation material (DIM) which changes the resistance of the external walls and ceilings depending on the indoor and outdoor temperature can help to minimise overheating in a highly insualted and air-tight building. Numerical simulation showed that DIM reduces the indoor air temperature in bedroom and living room by up to 1.1 °C and 1.2 °C, respectively, in the case study building in Melbourne, Australia.

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Infrared reflective wall paint in buildings: Energy saving potentials and thermal comfort

Cited by 28 publications

References 28 publications

Innovations in Building Diagnostics and Condition Monitoring: A Comprehensive Review of Infrared Thermography Applications

Innovations in Building Diagnostics and Condition Monitoring: A Comprehensive Review of Infrared Thermography Applications

Nanomaterials with high solar reflectance as an emerging path towards energy-efficient envelope systems: a review

Building Adaptation to Extreme Heatwaves

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