Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel
Solid desiccant air dehumidifier systems are widely used to supply dry air for many industrial processes. As humid atmospheric air flows through the system, the water vapor in the air is adsorbed by the desiccant material, resulting in dry air leaving the system. A numerical solution has become t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universitas Indonesia
2019-11-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | http://ijtech.eng.ui.ac.id/article/view/3590 |
| _version_ | 1797972872424062976 |
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| author | Alia Sofia Norazam Haslinda Mohamed Kamar Nazri Kamsah Muhammad Alhamid |
| author_facet | Alia Sofia Norazam Haslinda Mohamed Kamar Nazri Kamsah Muhammad Alhamid |
| author_sort | Alia Sofia Norazam |
| collection | DOAJ |
| description | Solid desiccant air dehumidifier systems are widely used to supply dry
air for many industrial processes. As humid atmospheric air flows through the
system, the water vapor in the air is adsorbed by the desiccant material,
resulting in dry air leaving the system. A numerical solution has become the
preferred choice for determining the performance criteria of desiccant
materials. The aim of this study is to determine the moisture removal capacity
(MRC), dehumidification effectiveness (?DW),
and thermal effectiveness (?th)
of a solid desiccant wheel material using a numerical method. A representative
three-dimensional model of an air channel enclosed with desiccant material was
developed and meshed using triangular elements. Flow simulations were carried
out under a transient condition. The model was validated by comparing the
simulation results for moisture content and air temperature at the outlet of
the air channel with similar results using experimental data obtained from the
literature. The relative errors for the desorption process were found to be
0.14% for air temperature and 3.7% for air humidity. For the adsorption
process, they were around 3.2 and 0.01%, respectively. These figures indicate
that the numerical model has an excellent ability to estimate the desiccant
material performance. It was also found that at any given regeneration
temperature, silica gel-CaCl2 has the highest MRC, dehumidification effectiveness, and thermal effectiveness compared to silica gel B and Zeolite 13X. |
| first_indexed | 2024-04-11T03:55:09Z |
| format | Article |
| id | doaj.art-608606298aa64b669f0ecc907d8d937c |
| institution | Directory Open Access Journal |
| issn | 2086-9614 2087-2100 |
| language | English |
| last_indexed | 2024-04-11T03:55:09Z |
| publishDate | 2019-11-01 |
| publisher | Universitas Indonesia |
| record_format | Article |
| series | International Journal of Technology |
| spelling | doaj.art-608606298aa64b669f0ecc907d8d937c2023-01-02T00:45:14ZengUniversitas IndonesiaInternational Journal of Technology2086-96142087-21002019-11-011061120113010.14716/ijtech.v10i6.35903590Simulation of Adsorption Process in a Rotary Solid Desiccant WheelAlia Sofia Norazam0Haslinda Mohamed Kamar1Nazri Kamsah2Muhammad Alhamid3Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, MalaysiaFaculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, MalaysiaFaculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, MalaysiaDepartment of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, IndonesiaSolid desiccant air dehumidifier systems are widely used to supply dry air for many industrial processes. As humid atmospheric air flows through the system, the water vapor in the air is adsorbed by the desiccant material, resulting in dry air leaving the system. A numerical solution has become the preferred choice for determining the performance criteria of desiccant materials. The aim of this study is to determine the moisture removal capacity (MRC), dehumidification effectiveness (?DW), and thermal effectiveness (?th) of a solid desiccant wheel material using a numerical method. A representative three-dimensional model of an air channel enclosed with desiccant material was developed and meshed using triangular elements. Flow simulations were carried out under a transient condition. The model was validated by comparing the simulation results for moisture content and air temperature at the outlet of the air channel with similar results using experimental data obtained from the literature. The relative errors for the desorption process were found to be 0.14% for air temperature and 3.7% for air humidity. For the adsorption process, they were around 3.2 and 0.01%, respectively. These figures indicate that the numerical model has an excellent ability to estimate the desiccant material performance. It was also found that at any given regeneration temperature, silica gel-CaCl2 has the highest MRC, dehumidification effectiveness, and thermal effectiveness compared to silica gel B and Zeolite 13X.http://ijtech.eng.ui.ac.id/article/view/3590air dehumidifiercomputational fluid dynamics (cfd)solid desiccanttransient flow simulation |
| spellingShingle | Alia Sofia Norazam Haslinda Mohamed Kamar Nazri Kamsah Muhammad Alhamid Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel International Journal of Technology air dehumidifier computational fluid dynamics (cfd) solid desiccant transient flow simulation |
| title | Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel |
| title_full | Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel |
| title_fullStr | Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel |
| title_full_unstemmed | Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel |
| title_short | Simulation of Adsorption Process in a Rotary Solid Desiccant Wheel |
| title_sort | simulation of adsorption process in a rotary solid desiccant wheel |
| topic | air dehumidifier computational fluid dynamics (cfd) solid desiccant transient flow simulation |
| url | http://ijtech.eng.ui.ac.id/article/view/3590 |
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