Diyala Journal of Engineering Sciences Vol (16) No 1, 2023: 103-114 103 Diyala Journal of Engineering Sciences Journal homepage: https://djes.info/index.php/djes ISSN: 1999-8716 (Print); 2616-6909 (Online) The Contribution of Adsorbent Materials (Silica Gel and Sawdust) in Removing Water Vapor: A Case Study in Iraq Amna Samir Ibrahim 1 * , Ahmed Al-Samari 1 , P. S. Arshi Banu 2 , I.M. Mahbubul 3 1 Department of Mechanical Engineering, University of Diyala, 32001 Diyala, Iraq 2 Department of Mechanical Engineering, Hindustan Institute of Technology & Science, Padur-603103, India 3 Institute of Energy Engineering, Dhaka University of Engineering & Technology, Gazipur (DUET), Gazipur-1707, Bangladesh ARTICLE INFO ABSTRACT Article history: Received October 5, 2022 Accepted January 10, 2023 This research aims to remove the moisture (latent load) generated by the occupants of the space due to the addition of water vapor resulting from the natural breathing process, the perspiration that evaporates in the air of the space. In sum, the dehumidification system (DS) reduces the amount of latent load or removes it completely to reduce the load on the air conditioner. In this study, adsorbent materials, such as silica gel-Blue and sawdust were used and their effectiveness was compared when used in dehumidification. The results of these experiments for June showed that the adsorption rate and temperature of the blue silica gel - Blue were 20% and 34°C, while the humidity and temperature increased to 52% and 36°C when using sawdust (when rotating the dehumidifying system hourly). Moreover, for July, the adsorption percentages of silica gel-Blue were 8%, while the moisture content of sawdust increased to 49%, while the adsorption percentage in August when using silica gel - Blue was 10% and the relative humidity increased until it reached 39% when using sawdust. While the temperatures in July and August reached their maximum value when using silica gel - Blue and sawdust at 35°C and 36°C, respectively. The water vapor absorption rate in June, July, and August is 83.39 g, 70.82 g, and 65 g, respectively. While the drying process increased during these months due to the increase in solar radiation. Therefore, silica gel - Blue has proven its effectiveness by absorbing moisture more efficiently than sawdust. However, when drying sawdust, it was more effective and faster drying than silica gel - Blue. Keywords: Renewable energy Adsorption materials Solar energy Air conditioning 1. Introduction Numerous issues are brought on by air pollution, which has detrimental consequences on the entire world, including climate change and general health. Moreover, the impact on the environment in general. However, through a succession of efforts that entice people to switch to clean energy, such risks can be lessened and ultimately eliminated with the development of renewable and "clean" energy and raising consciousness and understanding of its * Corresponding author. E-mail address: amnasamir75@gmail.com DOI: 10.24237/djes.2023.16110 This work is licensed under a Creative Commons Attribution 4.0 International License. beneficial effects in our lives [1]. When the weather conditions present an extra problem for Iraq that is marked by low relative humidity during this season and Iraq's dry summer season is scorching, therefore electricity demand is seasonal, with a peak in the summer months due to rising temperatures in most sections of the nation. During the summer, peak electricity demand is predicted to be roughly 50% higher than average consumption, widening the gap between network electrical supply (which works at maximum capacity) and demand [2]. To assist