On the experimental study of composite dessicants for energy efficient air dehumidification

This paper presents the development and performance characterization of new composite desiccants. The main compositions for the composite desiccants include silica gel, lithium chloride, calcium chloride and bentonite. Different percentage compositions of these four components were tested to determi...

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Main Authors:	Chua, K.J., Islam, Rafiqul
Format:	Article
Language:	English
Published:	IIUM Press 2015
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/50267/ http://irep.iium.edu.my/50267/ http://irep.iium.edu.my/50267/1/50267.pdf

id	iium-50267
recordtype	eprints
spelling	iium-502672017-11-14T03:23:13Z http://irep.iium.edu.my/50267/ On the experimental study of composite dessicants for energy efficient air dehumidification Chua, K.J. Islam, Rafiqul TJ Mechanical engineering and machinery This paper presents the development and performance characterization of new composite desiccants. The main compositions for the composite desiccants include silica gel, lithium chloride, calcium chloride and bentonite. Different percentage compositions of these four components were tested to determine the optimal material composition for improving moisture removal capacity under varying inlet air temperature and humidity, and amount of moisture released under different regenerative temperature. For the first time, four-layered composite desiccants were developed and tested experimentally to determine their moisture removal capacity and moisture regeneration capacity at temperature of about 60oC under inlet air conditions similar to Singapore’s tropical climate. The performances of these composite desiccants were benchmarked with the performance of pure silica gel - the most commonly used desiccant in the market today. It was observed experimentally, that employing a four-layered composite desiccant, comprising silica-gel (SiO2), Bentonite, Lithium Chloride (LiCl), and Calcium Chloride (CaCl2), has enabled greater moisture removal capacity for varying inlet air temperature and humidity ranging from 25 to 35oC and 55 to 95% relative humidity (RH). The percentage improvements, in contrast to pure silica gel, are 14 to 22.5%, and 10 to 26.3% for varying inlet air temperature and varying inlet RH, respectively. : Kertas kerja ini membentangkan perkembangan dan prestasi pencirian desiccants komposit baru. Komposisi utama bagi desiccants komposit termasuk gel silika, litium klorida, kalsium klorida dan bentonit. Peratusan komposisi yang berbeza daripada empat komponen telah diuji untuk menentukan komposisi bahan yang optimum untuk meningkatkan penyingkiran kapasiti kelembapan di bawah pelbagai suhu masuk udara dan kelembapan, dan jumlah kelembapan dikeluarkan di bawah suhu regeneratif yang berbeza. Buat kali pertama, desiccants komposit empat lapis telah dibangunkan dan diuji secara eksperimen untuk menentukan penyingkiran kelembapan kapasiti dan kelembapan kapasiti penjanaan semula mereka pada suhu kira-kira 60oC di bawah keadaan udara masuk sama dengan iklim tropika di Singapura. Persembahan ini desiccants komposit ditanda aras dengan prestasi gel silika tulen - bahan pengering yang paling biasa digunakan dalam pasaran hari ini. Diperhatikan, uji kaji, yang menggunakan bahan pengering komposit empat lapisan yang terdiri daripada silika gel (SiO2), Bentonit, Lithium Chloride (LiCl), dan Kalsium Klorida (CaCl2), telah membolehkan lebih besar penyingkiran kapasiti kelembapan bagi mengubah suhu udara masuk dan kelembapan antara 25 hingga 35oC dan 55 hingga 95% kelembapan relatif (RH). Peningkatan peratusan, berbeza dengan gel silika tulen, 14 ke 22.5%, dan 10 hingga 26.3% bagi mengubah masuk suhu udara dan berbeza-beza masuk RH, masing-masing. IIUM Press 2015 Article PeerReviewed application/pdf en http://irep.iium.edu.my/50267/1/50267.pdf Chua, K.J. and Islam, Rafiqul (2015) On the experimental study of composite dessicants for energy efficient air dehumidification. IIUM Engineering Journal, 16 (2(SI)). pp. 1-11. ISSN 1511-788X E-ISSN 2289-7860 http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/600
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Chua, K.J. Islam, Rafiqul On the experimental study of composite dessicants for energy efficient air dehumidification
description	This paper presents the development and performance characterization of new composite desiccants. The main compositions for the composite desiccants include silica gel, lithium chloride, calcium chloride and bentonite. Different percentage compositions of these four components were tested to determine the optimal material composition for improving moisture removal capacity under varying inlet air temperature and humidity, and amount of moisture released under different regenerative temperature. For the first time, four-layered composite desiccants were developed and tested experimentally to determine their moisture removal capacity and moisture regeneration capacity at temperature of about 60oC under inlet air conditions similar to Singapore’s tropical climate. The performances of these composite desiccants were benchmarked with the performance of pure silica gel - the most commonly used desiccant in the market today. It was observed experimentally, that employing a four-layered composite desiccant, comprising silica-gel (SiO2), Bentonite, Lithium Chloride (LiCl), and Calcium Chloride (CaCl2), has enabled greater moisture removal capacity for varying inlet air temperature and humidity ranging from 25 to 35oC and 55 to 95% relative humidity (RH). The percentage improvements, in contrast to pure silica gel, are 14 to 22.5%, and 10 to 26.3% for varying inlet air temperature and varying inlet RH, respectively. : Kertas kerja ini membentangkan perkembangan dan prestasi pencirian desiccants komposit baru. Komposisi utama bagi desiccants komposit termasuk gel silika, litium klorida, kalsium klorida dan bentonit. Peratusan komposisi yang berbeza daripada empat komponen telah diuji untuk menentukan komposisi bahan yang optimum untuk meningkatkan penyingkiran kapasiti kelembapan di bawah pelbagai suhu masuk udara dan kelembapan, dan jumlah kelembapan dikeluarkan di bawah suhu regeneratif yang berbeza. Buat kali pertama, desiccants komposit empat lapis telah dibangunkan dan diuji secara eksperimen untuk menentukan penyingkiran kelembapan kapasiti dan kelembapan kapasiti penjanaan semula mereka pada suhu kira-kira 60oC di bawah keadaan udara masuk sama dengan iklim tropika di Singapura. Persembahan ini desiccants komposit ditanda aras dengan prestasi gel silika tulen - bahan pengering yang paling biasa digunakan dalam pasaran hari ini. Diperhatikan, uji kaji, yang menggunakan bahan pengering komposit empat lapisan yang terdiri daripada silika gel (SiO2), Bentonit, Lithium Chloride (LiCl), dan Kalsium Klorida (CaCl2), telah membolehkan lebih besar penyingkiran kapasiti kelembapan bagi mengubah suhu udara masuk dan kelembapan antara 25 hingga 35oC dan 55 hingga 95% kelembapan relatif (RH). Peningkatan peratusan, berbeza dengan gel silika tulen, 14 ke 22.5%, dan 10 hingga 26.3% bagi mengubah masuk suhu udara dan berbeza-beza masuk RH, masing-masing.
format	Article
author	Chua, K.J. Islam, Rafiqul
author_facet	Chua, K.J. Islam, Rafiqul
author_sort	Chua, K.J.
title	On the experimental study of composite dessicants for energy efficient air dehumidification
title_short	On the experimental study of composite dessicants for energy efficient air dehumidification
title_full	On the experimental study of composite dessicants for energy efficient air dehumidification
title_fullStr	On the experimental study of composite dessicants for energy efficient air dehumidification
title_full_unstemmed	On the experimental study of composite dessicants for energy efficient air dehumidification
title_sort	on the experimental study of composite dessicants for energy efficient air dehumidification
publisher	IIUM Press
publishDate	2015
url	http://irep.iium.edu.my/50267/ http://irep.iium.edu.my/50267/ http://irep.iium.edu.my/50267/1/50267.pdf
first_indexed	2023-09-18T21:11:03Z
last_indexed	2023-09-18T21:11:03Z
_version_	1777411254660366336

On the experimental study of composite dessicants for energy efficient air dehumidification

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