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International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

A NOVEL MULTILAYER DESICCANT DEHUMIDIFIER FOR HYBRID AIR-CONDITIONING: ADSORPTION AND DESORPTION IN MACRO SCALE

Jubair A. Shamim
The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan

Wei-Lun Hsu
The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan

Soumyadeep Paul
The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan

Kenji Kitaoka
AGC Asahi Glass New Product R&D Center, Kanagawa-ku, Yokohama-shi, Kanagawa 221-8755, Japan

Hirofumi Daiguji
Department of Mechanical Engineering The University of Tokyo 7-3-1, Hongo, Bunkyo-ku Tokyo, 113 Japan; Department of Human and Engineered Environmental Studies, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8563, Japan

DOI: 10.1615/IHTC16.rac.023853
pages 8539-8545


KEY WORDS: Adsorption and desorption, Air conditioning and refrigeration, Heat and mass transfer, regeneration

Abstract

A novel multilayer sheet type solid desiccant dehumidifier was proposed in which desiccant particles were dispersed without any polymer binder to maximize the water uptake capability of the device. A distinguished micro sphere silica gel (M. S. Gel) manufactured by AGC Si-Tech. Co., Ltd., Japan, with a pore diameter of 2.7 nm was used as desiccant during the experiments which could be regenerated at temperatures below 60 °C. Besides, innovative sheet type design of desiccant bed significantly lowered the air flow restriction as well as pressure drop across the dehumidifier. Dynamic heat and mass transfer characteristics of the device during both adsorption and desorption were evaluated experimentally for varying inlet air conditions and desiccant bed thickness. The proposed device demonstrated better capability compared to existing solid desiccant technologies from the literature.

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