Journal ArticleDOI
Impact of Pavement Thermophysical Properties on Surface Temperatures
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In this paper, a one-dimensional mathematical model was developed, based on the fundamental energy balance, to calculate the pavement near-surface temperatures using hourly measured solar radiation, air temperature, dew point temperature, and wind velocity data.Abstract:
A one-dimensional mathematical model was developed, based on the fundamental energy balance, to calculate the pavement near-surface temperatures using hourly measured solar radiation, air temperature, dew-point temperature, and wind velocity data. An analysis was conducted to predict the diurnal temperature effects of pavement thermophysical properties with the aim of seeking an optimum composition of paving materials for future infrastructure projects. Appropriate paving materials not only ensure stability and safety for road users, but also the ability to mitigate heat absorption and high surface temperatures contributing to the Urban Heat Island Effect and human comfort. This paper evaluated the effects and sensitivities of the thermophysical properties on the pavement surface temperatures. The results indicated that both albedo and emissivity have the highest positive effects on pavement maximum and minimum temperatures, respectively, while increasing the thermal conductivity, diffusivity, and volumetric heat capacity help in mitigating the maximum but not the minimum pavement near-surface temperature.read more
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Journal ArticleDOI
Using cool pavements as a mitigation strategy to fight urban heat island—A review of the actual developments
TL;DR: In this article, the main thermal and optical parameters defining the thermal performance of pavements are analyzed and the main technological achievements on both fields are reviewed while existing applications are described and performance data are given when available.
Journal ArticleDOI
Comparing the effects of urban heat island mitigation strategies for Toronto, Canada
TL;DR: In this article, the authors evaluated different UHI mitigation strategies in different urban neighbors of Toronto, selected according to their building density, and evaluated the effects of cool surfaces (on the roofs, on the street pavements or as vegetation areas) through numerical simulations using the software ENVI-met.
Journal ArticleDOI
A review on hydronic asphalt pavement for energy harvesting and snow melting
TL;DR: In this article, the authors summarized the major achievements of the existing literatures about the HAP and gave some proposals for further investigations, and confirmed the feasibility of harvesting solar energy, cooling the pavement, snow melting/deicing as well as air conditioning of buildings by applying innovation technologies on asphalt pavement.
Journal ArticleDOI
On the Use of Cool Materials as a Heat Island Mitigation Strategy
TL;DR: In this paper, a modeling study was undertaken to assess the urban heat island effect over Athens, Greece, a densely populated city, by trying to analyze the impacts of large-scale increases in surface albedo on ambient temperature.
Journal ArticleDOI
Environmental impacts of reflective materials: Is high albedo a 'silver bullet' for mitigating urban heat island?
TL;DR: In this paper, the authors provide a synthetic overview of potential environmental impacts of reflective materials at a variety of scales, ranging from energy load on a single building to regional hydroclimate, and recommend that optimal strategy for UHI needs to be determined on a city-by-city basis, rather than adopting a "one-solution-fits-all" strategy.
References
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Book
Boundary layer climates
TL;DR: This modern climatology textbook explains those climates formed near the ground in terms of the cycling of energy and mass through systems.
Book
Heat Transfer: A Practical Approach
TL;DR: In this article, the basic concepts of thermodynamics and heat transfer heat conduction are discussed, and numerical methods in heat transfer forced convection natural convection boiling and condensation radiation heat-transfer heat exchangers mass transfer.
Book
Scientific Computing: An Introductory Survey
Michael T. Heath,Eric M. Munson +1 more
TL;DR: This book presents a broad overview of numerical methods for solving all the major problems in scientific computing, including linear and nonlinear equations, least squares, eigenvalues, optimization, interpolation, integration, ordinary and partial differential equations, fast Fourier transforms, and random number generators.
Journal ArticleDOI
Residential cooling loads and the urban heat island—the effects of albedo
TL;DR: In this article, the effects of albedo modifications on ambient conditions and micro-climates were analyzed using the DOE-2.1C building energy analysis program in conjunction with micro-climate and planetary boundary layer models.