A Review of Material Cover Features for Mitigating Urban Heat Island

Abstract

<p class="Body"><strong><em>Abstract</em></strong><strong><em></em></strong></p><p class="Body"><em>Urban Heat Island (UHI) is related to the increase of urban compared to rural temperature as the result of global phenomenon. The increase of temperature is predicted to be intensified along with the extend of urban activity in the near future. Therefore, the discussion on UHI becomes significance. This paper discusses the result of literature studies on thermal characteristics of materials that potentially used to reduce Urban Heat Island, especially in utilizing pavement and roof cover. </em><em> The result of the study concludes that the </em><em>reduction of UHI is determined by: 1) the high-level albedo (the ratio between the reflected heat and the absorbed heat) of material that is influenced by the color and texture of its surface; 2) The high level thermal emittance of material; 3) The lower capacity of material to store the heat. 4) The capability thermal conductivity of material surface. Recommended pavements to reduce UHI are cool pavement, reflective pavement, porous pavers, permeable pavers, pervious pavement, water retaining pavement. Roof cover materials that reduce Urban Heat Island are Cool Roof and Green Roof. The design and toughness of materials should be considered to reduce UHI.<strong></strong></em></p><p class="Body"> </p><em>Keywords: Urban Heat Island, material feature, thermal performance.</em>

Outdoor Thermal Performance Comparison of Several Glazing Types

“…The use of materials with high albedo values is a design approach that is often used to reduce surface temperatures in urban areas and building's cooling loads. The most widely used approach is to apply a reflective material on the roof and roads, such as cool pavement and cool roof (Phinyawatana, 2006;Rosenfeld, A.H., 1998;Santamouris, 2012;Yuan, J., Emura, K., Sakai, 2013,Pratiwi, 2018. However, the effect of using a reflective material in the building facade on outdoor temperature has not been discussed much.…”

A systematic review of heat recovery from roads for mitigating urban heat island effects: current state and future directions

“…Therefore, there is a need for a comprehensive review of the existing literature on heat recovery from roads for mitigating UHI (Debbage and Shepherd, 2015). Heat recovery from roads for mitigating UHI involves the application of various engineering principles, including heat transfer mechanisms, types of heat recovery systems, factors affecting the efficiency of heat recovery, and applications of heat recovered from roads (Nuruzzaman, 2015;Pratiwi, 2018).…”

“…Radiation is the transfer of heat through electromagnetic waves. The efficiency of heat transfer mechanisms depends on various factors (Gui et al, 2007), such as the material properties of the road surface, air temperature, wind speed, and humidity (Pratiwi, 2018;Wang et al, 2010). There are several types of heat recovery systems used for extracting heat from roads, including air-based systems, liquid-based systems, and thermoelectric systems.…”

Energy-yield Assessment Based on the Orientations and the Inclinations of the Solar Photovoltaic Rooftop Mounted in Jakarta, Indonesia

“…Mitigating UHI has been a great challenge, and several strategies are planting more trees and opening more space for vegetation [11], [12], green roofs technology [13], [14], cooling roofs materials [15], and new cool pavements [16]. All those strategies were applied to reduce albedo, the reflectivity index of the shortwave solar radiation onto the Earth.…”