Effect of Radiant Surface Combined with Displacement Ventilation in Office Building in Egypt | ||
| Engineering Research Journal | ||
| Volume 177, Issue 0, March 2023, Pages 231-254 PDF (1.02 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/erj.2023.289995 | ||
| Authors | ||
| Mohamed Salah Bakry* 1; Mohamed Hamdy2; Ayman Mohamed3; Khairy Elsayed4 | ||
| 1Mechanical Power Engineering Department, Faculty of Engineering at El-Mattaria, Helwan University, | ||
| 2Department of Civil and Environmental Engineering, NTNU Norwegian University of Science and Technology | ||
| 3Mechanical Power Engineering Department, Faculty of Engineering at El-Mattaria, Helwan University | ||
| 4Mechanical Power Engineering Department, Faculty of Engineering at El-Mattaria, Helwan University Mechanical Engineering Department, College of Engineering and Technology-Smart Village Campus, Arab Academy for Science, Technology and Maritime Transport | ||
| Abstract | ||
| In hot and humid climates, this paper describes a study to estimate the energy savings potential of a radiant system using simulation analysis. The medium size office buildings in Egypt used as a case study. To evaluate the thermal performance and energy consumption, the simulations were carried out using the IDA ICE software. This paper addresses the compatibility between radiant cooling systems and the climates in the buildings mainly through the issue of condensation risk. The risk of condensation can be reduced, by dehumidifying the supply air in different cases. Five heating, ventilation, and air-conditioning (HVAC) systems namely: direct expansion Split Units (DX-SU), Displacement Ventilation (DV), Chilled Ceiling with Displacement Ventilation (CC-DV), Radiant Floor with Displacement Ventilation (FR-DV) and Radiant Wall with Displacement Ventilation (WR-DV) are simulated. All simulations were performed for the whole year. However, two separate weeks in winter and summer are selected to investigate the thermal performance in addition of the energy consumption. The results showed that (RW-DV) system achieves 14.36% and 24.03% total energy saving from the base system (DX-SU) for the winter and summer seasons, respectively. While the DV system achieves 1.6% and 12% total energy saving from the base system (DX-SU) for the winter and summer seasons, respectively. | ||
| Keywords | ||
| Office; Condensation; Radiant System; Energy Savings | ||
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