Khetib, YacineAlotaibi, Abdullah AlhumaidiAlshahri, Abdullah H.Cheraghan, GoshtaspSharifpur, MohsenMeyer, Josua P.2022-03-312022-03-312021-10Khetib, Y.; Alotaibi, A.A.; Alshahri, A.H.; Cheraghan, G.; Sharifpur, M.; Meyer, J.P. Study on the Effect of Hole Size of Trombe Wall in the Presence of Phase Change Material for Different Times of a Day in Winter and Summer. Processes 2021, 9, 1886. https://doi.org/10.3390/pr9111886.2227-9717 (online)10.3390/ pr9111886http://hdl.handle.net/2263/84749In this article, a numerical study is performed on a Trobme wall in a tropical city for two seasons, summer and winter. A 1 × 1.5 m Trobme wall with a thickness of 15 cm is designed and analyzed. A 1-inch-diameter tube filled with PCM is used to enhance efficiency. The wall is analyzed at different times of the day for the two cold and hot seasons for different sizes of wall holes in the range of 70 to 17.5 cm when the wall height is 20 cm. A fluid simulation software is employed for the simulations. The problem variables include different hours of the day in the two cold and hot seasons, the presence or absence of PCM, as well as the size of the wall hole. The results of this simulation demonstrate that the maximum outlet temperature of the Trobme wall occurs at 2 P.M. Using PCM on the wall can allow the wall to operate for longer hours in the afternoon. However, the use of PCM reduces the outlet wall temperature in the morning. The smaller the size of the wall hole, the more air can be expelled from the wall.en© 2021 by the authors. Licensee: MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.Solar energyTrombe wallNatural convectionPhase change material (PCM)Engineering, built environment and information technology articles SDG-04SDG-04: Quality educationEngineering, built environment and information technology articles SDG-07SDG-07: Affordable and clean energyEngineering, built environment and information technology articles SDG-09SDG-09: Industry, innovation and infrastructureEngineering, built environment and information technology articles SDG-11SDG-11: Sustainable cities and communitiesEngineering, built environment and information technology articles SDG-12SDG-12: Responsible consumption and productionEngineering, built environment and information technology articles SDG-13SDG-13: Climate actionArticle