Experimental study on silica gel-LiCl composite desiccants for desiccant coated heat exchanger

被引：87

作者：

Zheng, X. ^{[1
]}

Ge, T. S. ^{[1
]}

Jiang, Y. ^{[1
]}

Wang, R. Z. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Key Lab Power Machinery & Engn MOE, Shanghai 200240, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2015年 / 51卷

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

Composite desiccant; Thermal conductivity; Texture property; Dehumidification capacity; Desiccant coated heat exchanger; Sorption; PERFORMANCE;

D O I：

10.1016/j.ijrefrig.2014.11.015

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Desiccant coated aluminum-fin is an important part in desiccant coated heat exchanger (DCHE). It will affect the overall performance of this novel solid desiccant component. In the paper, different silica gel-LiCl composite desiccant coated aluminum sheets were fabricated and some key parameters were studied. Nitrogen adsorption suggested that texture properties of composite desiccants were different from silica gel due to impregnated salt and combined action of silica sol and silica gel. The highest thermal conductivity of composite sheets was 5.8 Wm(-1)K(-1), which is twice of silica gel coated one. Sorption kinetics indicated that composite sheets exhibited higher dynamic sorption quantities and faster sorption rates. Sorption isotherms were also obtained and fitted with Dubinin -Astakhov equation. Besides, dehumidification capacity of composite DCHE was tested and compared with silica gel one. Results indicated that enhanced dehumidification capacity can be achieved with use of composite desiccant in the DCHE system. (C) 2014 Elsevier Ltd and IIR. All rights reserved.

引用

页码：24 / 32

页数：9

共 25 条

[1] New family of solid sorbents for adsorptive cooling: Material scientist approach
Aristov Yu.I.
[J]. Journal of Engineering Thermophysics, 2007, 16 (2) : 63 - 72
[2] Challenging offers of material science for adsorption heat transformation: A review
Aristov, Yuriy I.
[J]. APPLIED THERMAL ENGINEERING, 2013, 50 (02) : 1610 - 1618
[3] An overview on adsorption pairs for cooling
Askalany, Ahmed A.
Salem, M.
Ismael, I. M.
Ali, A. H. H.
Morsy, M. G.
Saha, Bidyut B.
[J]. RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2013, 19 : 565 - 572
[4] Field performance measurements of a heat pump desiccant unit in dehumidification mode
Aynur, T. N.
Hwang, Y. H.
Radermacher, R.
[J]. ENERGY AND BUILDINGS, 2008, 40 (12) : 2141 - 2147
[5] Advanced performance of an open desiccant cycle with internal evaporative cooling
Bongs, Constanze
Morgenstern, Alexander
Henning, Hans-Martin
[J]. 1ST INTERNATIONAL CONFERENCE ON SOLAR HEATING AND COOLING FOR BUILDINGS AND INDUSTRY (SHC 2012), 2012, 30 : 524 - 533
[6] Collier R., 1989, ASHRAE T, V95, P823
[7] Dubinin MM, 1975, PROGR SURFACE MEMBRA, V9, P10
[8] Experimental evaluation of the new solid desiccant heat pump system in Asia-Pacific climatic conditions
Enteria, Napoleon
Mizutani, Kunio
Monma, Yohei
Akisaka, Takayuki
Okazaki, Noriomi
[J]. APPLIED THERMAL ENGINEERING, 2011, 31 (2-3) : 243 - 257
[9] Simulation investigation on solar powered desiccant coated heat exchanger cooling system
Ge, T. S.
Dai, Y. J.
Li, Y.
Wang, R. Z.
[J]. APPLIED ENERGY, 2012, 93 : 532 - 540
[10] Performance study of silica gel coated fin-tube heat exchanger cooling system based on a developed mathematical model
Ge, T. S.
Dai, Y. J.
Wang, R. Z.
[J]. ENERGY CONVERSION AND MANAGEMENT, 2011, 52 (06) : 2329 - 2338

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