PCM-Integrated Building Construction

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PCM-Integrated Building Construction ( pcm-integrated-building-construction )

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The thermal response of different configurations with and without PCMs was inves- Energies 2022, 15, 6356 tigated, and heat flux variation for all three temperature regimes was recorded. 3.1.1. Baseline Configuration of Concrete The baseline configuration of concrete-only samples was tested in all three tempera- ture regimes, as shown in Figure 7. The transient thermal response of the concrete sample8sof 20 was investigated through temperature measurements of the samples’ convective heating and cooling. W8 Energies 2022, 15, x FOR PEER REVIE of 22 Figure 7. Temperature distribution for baseline case of concrete samples under different Figure 7. Temperature distribution for baseline case of concrete samples under different thermal loading. thermal loading. The peak temperatures for HTH cases at the sample base were 40.5 °C and 44.6 °C, whereas the temperatures reduced at the sample top surface, with peaks recorded at 25.6 °C and 27.1 °C. Similarly, for the MTH case, the peak temperature at the sample bottom was 35.2 °C, and the peak temperature at the sample top was 23.1 °C. For the LTH range, at the sample base, peak temperatures were 25 °C and 23.8 °C, and the highest tempera- ture value at the sample top was 19.8 °C. 3.1.2. Heat Flux Variation in Different Thermal Environments Transient heat flux variation was recorded and is shown in Figure 8 for the concrete samples. The input tank temperature for the HTH, MTH and LTH cases was 50 °C, 40 °C and 30 °C, respectively. The steady-state heat flux developed on the hot plate was ~300 W/m2, 200 W/m2 and 100 W/m2, whereas the peak heat flux obtained at the sample top was 48.2 W/m2, 44.5 W/m2 and 21.6 W/m2 in these cases, respectively.

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