Thermal measurements of coating films used for surface insulation and protection

Paul, Kanai Ch.; Pal, A.K.; Ghosh, A.; Chakraborty, NR

doi:10.1007/bf02699608

Cited by 8 publications

(1 citation statement)

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“…Temperatures measured (1200-1300 h LST). Corresponding materials, thermal conductivities, and average albedos for each surface also listed (ASTM C1057, 2012Campbell & Norman, 1998;Environmental Protection Agency, 2014;ISO 13732, 2010;Oke, 1988;Paul, Pal, Ghosh, & Chakraborty, 2004).…”

Section: Multiscale Metrics and Temporal Analysesmentioning

confidence: 99%

Hot playgrounds and children's health: A multiscale analysis of surface temperatures in Arizona, USA

Vanos

Middel

McKercher

et al. 2016

Landscape and Urban Planning

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h i g h l i g h t s• A mismatch exists between remotely sensed and in situ urban surface temperatures (T s ).• The hottest T s in a Phoenix area neighborhood were found on playground surfaces.• Children are more vulnerable to the effects of heat stress and high T s than adults.• Shade of any type is found effective in reducing T s and improving thermal safety.• Data must be collected at the touch-scale for spatially accurate high T s mitigation. a r t i c l e i n f o b s t r a c tObjectives: To provide novel quantification and advanced measurements of surface temperatures (T s ) in playgrounds, employing multiple scales of data, and provide insight into hot-hazard mitigation techniques and designs for improved environmental and public health. Methods: We conduct an analysis of T s in two Metro-Phoenix playgrounds at three scales: neighborhood (1 km resolution), microscale (6.8 m resolution), and touch-scale (1 cm resolution). Data were derived from two sources: airborne remote sensing (neighborhood and microscale) and in situ (playground site) infrared T s (touch-scale). Metrics of surface-to-air temperature deltas ( T s-a ) and scale offsets (errors) are introduced. Results: Select in situ T s in direct sunlight are shown to approach or surpass values likely to result in burns to children at touch-scales much finer than T s resolved by airborne remote sensing. Scale offsets based on neighbourhood and microscale ground observations are 3.8 • C and 7.3 • C less than the T s-a at the 1 cm touch-scale, respectively, and 6.6 • C and 10.1 • C lower than touch-scale playground equipment T s , respectively. Hence, the coarser scales underestimate high T s within playgrounds. Both natural (tree) and artificial (shade sail) shade types are associated with significant reductions in T s . Conclusions: A scale mismatch exists based on differing methods of urban T s measurement. The sub-meter touch-scale is the spatial scale at which data must be collected and policies of urban landscape design and health must be executed in order to mitigate high T s in high-contact environments such as playgrounds. Shade implementation is the most promising mitigation technique to reduce child burns, increase park usability, and mitigate urban heating.

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Section: Multiscale Metrics and Temporal Analysesmentioning

confidence: 99%