Results 41 to 50 of about 2,457 (283)

CLAY ROOFING TILE: A COOL ROOF?

Open Journal of Science and Technology, 2018
The aim of this study is to determine if the clay roofing tile in its natural albedo can be considered “cool” in the thermal performance through a comparison of its surface temperature to a cool coated clay tile using the exposure rack method. It begins with highlighting the expectation (from review) of the thermal performance of a cool colored ...
openaire   +2 more sources

Urban cooling potential and cost comparison of heat mitigation techniques for their impact on the lower atmosphere

Computational Urban Science, 2023
Cool materials and rooftop vegetation help achieve urban heating mitigation as they can reduce building cooling demands. This study assesses the cooling potential of different mitigation technologies using Weather Research and Forecasting (WRF)- taking ...
Ansar Khan, Laura Carlosena, Samiran Khorat, Rupali Khatun, Debashish Das, Quang-Van Doan, Rafiq Hamdi, Sk Mohammad Aziz, Hashem Akbari, Mattheos Santamouris, Dev Niyogi   +10 more
doaj   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Trends in cool roof solar reflectivity degradation in New York City (2014–2020): an important consideration for health-based evaluations of high albedo urban roofing interventions

Frontiers in Sustainable Cities
IntroductionGrowing remote sensing and machine learning capabilities offer opportunities to understand the spatiotemporal performance of reflective cool roofs, a widely implemented urban heat mitigation tool, in relation to health. We evaluated cool roof
Luke Bonanni, Luke Bonanni, Anna Bershteyn, Mehdi Pourpeikari Heris, Andrea Titus, Hanxue Wei, Oyinkansola Babayode, William Rom, William Rom, Alexander Azan, Alexander Azan   +10 more
doaj   +1 more source

Investigating the Effect of Dust Accumulation on the Solar Reflectivity of Coating Materials for Cool Roof Applications

Energies, 2021
Cool roofs use reflective materials or coatings to reflect a portion of the incident solar radiation. This results in a lowering the surface temperature of the cool roof compared to black roofs, and thus helps reduce the cooling energy loads during the ...
Hamed H. Saber, Ali E. Hajiah, Saleh A. Alshehri, Hussain J. Hussain   +3 more
doaj   +1 more source

Inclusion of cool roofs in nonresidential Title 24 prescriptive requirements [PDF]

, 2002
Roofs that have high solar reflectance (high ability to reflect sunlight) and high thermal emittance (high ability to radiate heat) tend to stay cool in the sun.
Bretz, Sarah, Konopacki, Steve, Levinson, Ronnen, Akbari, Hashem   +3 more
core   +1 more source

Self‐Adaptive Non‐Flammable Wallpaper With Layered Bead‐Network Structure for Light Path Modulation Enabling on‐Demand Building Thermal Management

Advanced Science, EarlyView.
A layered bead‐network wallpaper is designed to modulate the light propagation path, overcoming the color residue limitations of thermochromic components for efficient automatic switching between radiative cooling and solar heating modes. The layered bead‐network wallpaper provides passive, all‐season thermal regulation while offering self‐cleaning and
Jianyu Wu, Linmin Xia, Jiankun Wu, Yuying Yang, Wuhong Zhong, Jianguo Li, Yan Yu, Rilong Yang   +7 more
wiley   +1 more source

Optimal Roof Strategy for Mitigating Urban Heat Island in Hot Arid Climates: Simulation and Python-Based Multi-Criteria Decision Analysis

Urban Science
This study adopts a multi-scale, simulation-driven approach to evaluate the performance of different passive roof types in mitigating Urban Heat Island (UHI) in hot arid climate.
Rehab Alaa, Amira Elbalazi, Walaa S.E. Ismaeel   +2 more
doaj   +1 more source

A study on the comparative review of cool roof thermal performance in various regions

Energy and Built Environment, 2022
Energy demand is growing significantly worldwide to create thermal comfort in buildings. Air-conditioning is contributing to energy consumption at a massive scale in the residential and commercial sectors.
Mohan Rawat, R. N. Singh
doaj   +1 more source

Thermal Calculations for Co‐Firing of Hydrogen/Ammonia and Coal in 660‐MW Coal‐Fired Boilers

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To achieve a clean energy transition under the dual carbon goals, blending hydrogen/ammonia into pulverized coal boilers represents a key technological pathway. Different hydrogen/ammonia co‐firing ratios (5%–50%) are investigated for their impact on the thermodynamic characteristics of 660‐MW supercritical boiler at 100% and 20% boiler ...
Yaodong Da, Nana Hou, Weipeng Wang, Yongqiang Chang, Xin Liu, Feng Pan, Defu Che, Lei Deng   +7 more
wiley   +1 more source