The Contribution of Adsorbent Materials (Silica Gel and Sawdust) in Removing Water Vapor; Iraq as a Study Case

Amna Samir Ibrahim; Ahmed Al-Samari; P. S. Arshi Banu; I.M. Mahbubul

doi:10.24237/djes.2023.16110

Authors

Amna Samir Ibrahim
amnasamir75@gmail.com
Department of Mechanical Engineering, University of Diyala, 32001 Diyala, Iraq
Ahmed Al-Samari Department of Mechanical Engineering, University of Diyala, 32001 Diyala, Iraq
P. S. Arshi Banu Department of Mechanical Engineering, Hindustan Institute of Technology & Science, Padur-603103, India
I.M. Mahbubul Institute of Energy Engineering, Dhaka University of Engineering & Technology, Gazipur (DUET), Gazipur-1707, Bangladesh

Keywords:

Renewable energy, Adsorption materials, Solar energy, Air conditioning

Abstract

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.

Downloads

Download data is not yet available.

References

A. K. Pandey, M. S. Hossain, V. V. Tyagi, N. Abd Rahim, J. A. L. Selvaraj, and A. Sari, “Novel[1] C. Ă. T. Ă. R. I. G. R. U. S. T and L. F. Rus, “Experimental Study on Power Characteristic Curves of a Portable Pem Fuel Cell Stack in the Same Environmental Conditions,” vol. 3, no. 4, pp. 2–7, 2012.

Z. Abass Ahmed and D. A. Pavlyuchenko, “Turning Iraq into a country of energy exporter through the exploitation of solar energy and vast desert land,” E3S Web Conf., vol. 114, no. 201 9, 2019, doi: 10.1051/e3sconf/201911405009.

M. T. Chaichan and H. A. Kazem, Generating electricity using photovoltaic solar plants in Iraq. 2018.

A. Al-Samari, Y. A. J. Almahdawi, and L. A. hasnawi Al-Rubaye, “Design of absorption refrigeration system using solar energy resource,” Int. J. Air-Conditioning Refrig., vol. 28, no. 3, pp. 1–10, 2020, doi: 10.1142/S201013252050025X.

H. H. Al-Kayiem and S. T. Mohammad, “Potential of renewable energy resources with an emphasis on solar power in Iraq: An outlook,” Resources, vol. 8, no. 1, pp. 1–20, 2019, doi: 10.3390/resources8010042.

J. W. Lstiburek et al., “Delft Center for Systems and Control,” Energy Build., vol. i, no. June, pp. 1–27, 2015, [Online]. Available: http://dx.doi.org/10.1016/j.sbspro.2015.01.011%0Ahttp://eprints.ums.ac.id/37501/6/BAB II.pdf.

K. Joudi and A. Al-Badree, “Comparison of Cooling Load Calculation Methods By Tfm, Cltd & Tetd With Experimental Measurements,” AL-fathet Jornarl, 2005.

A. S. H. Al-Samari and S. D. Ali, “Experimental evaluation of surface geothermal energy for air conditioning applications in Iraq,” J. Mech. Eng. Res. Dev., vol. 41, no. 1, pp. 38–43, 2018, doi: 10.7508/jmerd.2018.01.005.

H. Najim Al-Deen and A. Al-Samari, “Experimental assessment of combining geothermal with conventional air conditioner regarding energy consumption in summer and winter,” Diyala J. Eng. Sci., vol. 14, no. 3, pp. 94–107, 2021, doi: 10.24237/djes.2021.14308.

S. Misha, S. Mat, M. H. Ruslan, and K. Sopian, “Review of solid/liquid desiccant in the drying applications and its regeneration methods,” Renew. Sustain. Energy Rev., vol. 16, no. 7, pp. 4686–4707, 2012, doi: 10.1016/j.rser.2012.04.041.

H. Huang, T. Oike, F. Watanabe, Y. Osaka, N. Kobayashi, and M. Hasatani, “Development research on composite adsorbents applied in adsorption heat pump,” Appl. Therm. Eng., vol. 30, no. 10, pp. 1193–1198, 2010, doi: 10.1016/j.applthermaleng.2010.01.036.

C. H. Chen, C. Y. Hsu, C. C. Chen, and S. L. Chen, “Silica gel polymer composite desiccants for air conditioning systems,” Energy Build., vol. 101, pp. 122–132, 2015, doi: 10.1016/j.enbuild.2015.05.009.

A. M. Hamed, A. Khalil, A. E. Kabeel, M. M. Bassuoni, and A. M. Elzahaby, “Performance analysis of dehumidification rotating wheel using liquid desiccant,” Renew. Energy, vol. 30, no. 11, pp. 1689–1712, 2005, doi: 10.1016/j.renene.2004.11.014.

M. H. Mahmood, M. Sultan, T. Miyazaki, and S. Koyama, “Desiccant air-conditioning system for storage of fruits and vegetables: Pakistan preview,” Evergreen, vol. 3, no. 1, pp. 12–17, 2016, doi: 10.5109/1657381.

C. M. Yang, C. C. Chen, and S. L. Chen, “Energy-efficient air conditioning system with combination of radiant cooling and periodic total heat exchanger,” Energy, vol. 59, pp. 467–477, 2013, doi: 10.1016/j.energy.2013.07.015.

Y. Bi, W. Yang, and X. Zhao, “Numerical investigation of a solar/waste energy driven sorption/desorption cycle employing a novel adsorbent bed,” Energy, vol. 149, pp. 84–97, 2018, doi: 10.1016/j.energy.2018.02.021.

A. Singh, S. Kumar, and R. Dev, “Studies on cocopeat, sawdust and dried cow dung as desiccant for evaporative cooling system,” Renew. Energy, vol. 142, pp. 295–303, 2019, doi: 10.1016/j.renene.2019.04.122.

U. of T. at A. A. W. F. Stoecker (University of Illinois at Urbana-Champaign); J. W. Jones, “Refrigeration and Air Conditioning, Second Edition,” McGrow Hill, Singapore, vol. 90, no. 4, pp. 667–670, 1979.

S. K. Wang, Air Conditioning Systems: System Classification, Selection, and Individual Systems. 2001.

M. S. Owen, 2009 ASHRAE Handbook: Fundamentals, vol. 30329, no. 404. 2009.