Effect of using PCMs and shading devices on the thermal performance of buildings in different Algerian climates. A simulation-based optimization

Numerical Assessment of Different Phase Change Materials as a Passive Strategy to Reduce Energy Consumption in Buildings under Tropical Climates

“…This is an open software made by the U.S. Department of Energy (DOE) for building energetic simulations. As an open software, it is accessible for adapting to personalized interfaces or coupling with other softwares: Sarri et al [16] carried out a simulation-based optimization by coupling EnergyPlus and GenOpt tools to determine the optimum melting temperature of PCM when applied to buildings in different Algerian climatic zones; Jia et al [17] used EnergyPlus to study the possibilities of improving the thermal performance of prefabricated buildings in different climates by adding PCMs; Sangwan et al [18] also modeled a tropical building, but using Revit software to calculate cooling load, and EnergyPlus to figure out the optimal PCM thickness for energy savings. DesignBuilder [9] is also a widely used program based on En-ergyPlus but with a more comfortable interface.…”

“…Yu et al [23] also showed how the liquefaction rate varied from 76% to 96% according to an increment of 2 • C on phase transition temperature. Sarri et al [16] determined the optimum melting temperature for PCM in a building studied in different Algerian climates. A temperature of 28 • C, with a melting range of 3 • C, is obtained to ensure a comfort range of 24 • C to 27 • C, where outdoor air temperatures are up to 48 • C. Moreover, it is remarkable that coupling shading devices to PCM decreased melting temperature need to 27.07 • C. Jia et al [17] showed how the latent heat and the phase transition temperature are related to energy savings.…”

“…On the other hand, different energy savings were achieved: with insulation from 8.88% to 10.21%, with local shading from 2.45% to 5.05%, insulation and shading from 18.79% to 20.06%, and with insulation and PCM from 11.87% to 12.44%. Moreover, the results showed that combining PCM with insulation provides a temperature stabilization band from 23 • C to 26 • C. In contrast, the outside temperature is under 19 • C and over 28 • C. Sarri et al [16] assessed the effect of using PCMs and shading devices in different hot Algerian locations. It was found that adding shading devices to buildings with PCM can improve energy savings up to 33.83%, compared to a buildings thermally improved with PCM.…”

Analisis Pengaruh Tipe Internal Shading Sebagai Strategi Pendinginan Pasif Pada Bangunan

“…Hernandez sebelumnya melakukan studi untuk melihat efek dari penggunaan krepyak terhadap kenyamanan visual dan energi dalam bangunan (Hernández et al, 2017). Dari penelitian yang telah dilakukan (Hernández et al, 2017), ditemukan bahwa penggunaan krepyak mampu menurunkan 68% beban pendinginan bangunan pada kombinasi penggunaan dengan material kaca Low-E. penelitan lainnya oleh Sarri (Sarri et al, 2021) menyebutkan bahwa penggunaan PCM pada selubung bangunan memberikan dampak yang cukup signifikan terhadap kinerja energi bangunan. Kombinasi penggunaan PCM dan shading device pada bangunan memiliki pengaruh yang berbeda terhadap kinerja bangunan pada musim yang berbeda.…”

“…Gambar 2 Hasil simulasi tipe shading terhadap solar gain Penggunaan internal shading ini cukup efektif dalam menurunkan solar gain pada bangunan. Penelitian sebelumnya oleh Sarri (Sarri et al, 2021) menunjukkan bahwa penggunaan shading memiliki pengaruh yang signifikan pada musim panas, sehingga dapat mengurangi radiasi panas matahari yang masuk ke dalam bangunan. Hal ini juga sesuai dengn penelitian yang telah dilakukan oleh Dewi (Dewi et al, 2019) juga menunjukkan adanya penurunan solar gain pada penggunaan shading eksternal.…”