Abstract
We assessed the usefulness of phase-change material (PCM)-based thermal plates fabricated from wood-plastic composites (WPCs) in mitigating the urban heat island effect. The thermal performance of plates containing PCMs with two different melting temperatures and with two different albedo levels was evaluated. The results showed that the PCM with a melting temperature of 44 °C maintained lower surface and inner temperatures than the PCM with a melting temperature of 25 °C. Moreover, a higher surface albedo resulted in a lower surface temperature. However, the thermal performance of PCMs with different melting temperatures but the same surface albedo did not differ. Using PCM-based materials in roof finishing materials can reduce surface temperatures and improve thermal comfort.
Highlights
The use of phase-change materials (PCMs) in building components, such as walls [1,2,3], roofs [4,5,6,7,8,9,10], windows [11,12,13], and floors [14,15,16,17], has grown
We assumed that the thermal plates were placed on the roof of the existing building, as shown in PCM was modeled the same material studied in small-scale
The surface temperature of the wood-plastic composites (WPCs) plate without the PCM increased to 54.5 ◦ C, that of the plate with RT 25 increased to 52.2 ◦ C, and that of the plate with RT 44 increased to 47.7 ◦ C (Figure 7)
Summary
The use of phase-change materials (PCMs) in building components, such as walls [1,2,3], roofs [4,5,6,7,8,9,10], windows [11,12,13], and floors [14,15,16,17], has grown. PCMs function as thermal storage materials that can absorb or release heat during liquefaction or solidification at their phase-change temperatures. The use of PCMs can help to reduce energy demands and improve indoor thermal comfort. PCM roofs are effective in improving indoor environments. Several PCM-based methods of roof construction have been proposed to reduce surface temperatures and building energy consumption
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