Effects of wall thickness on the heat and moisture transfers in desiccant wheels for air dehumidification and enthalpy recovery

被引：76

作者：

Niu, JL ^{[1
]}

Zhang, LZ ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Bldg Serv Engn, Kowloon, Hong Kong, Peoples R China

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2002年 / 29卷 / 02期

关键词：

D O I：

10.1016/S0735-1933(02)00316-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Desiccant wheels have two major uses: air dehumidification and enthalpy recovery. In this paper, a two-dimensional coupled heat and mass transfer model which takes into account the resistance in the solid in both the axial and the thickness directions is presented to simulate the heat and mass transfers in a desiccant wheel. Through numerical simulations, the optimum rotary speeds for sensible heat recovery, latent heat recovery, and air dehumidification are calculated. Temperature and humidity profiles in the wheel during both the dehumidification and the enthalpy recovery processes are analyzed. The effects of channel wall thickness on the Optimum rotary speeds for the two applications are analyzed. (C) 2002 Elsevier Science Ltd.

引用

页码：255 / 268

页数：14

共 16 条

[1] PREDICTION OF HEAT AND MASS REGENERATOR PERFORMANCE USING NONLINEAR ANALOGY METHOD .2. COMPARISON OF METHODS [J].

BANKS, PJ .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1985, 107 (01) :230-238

[2]

JURINAK JJ, 1984, J HEAT TRANS-T ASME, V106, P638, DOI 10.1115/1.3246728

[3] EXPERIMENTAL-STUDY OF OPTIMAL OPERATION FOR A HONEYCOMB ADSORBER OPERATED WITH THERMAL SWING [J].

KODAMA, A ;

GOTO, M ;

HIROSE, T ;

KUMA, T .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1993, 26 (05) :530-535

[4] COUPLED HEAT AND MASS-TRANSFER IN REGENERATORS - PREDICTION USING AN ANALOGY WITH HEAT-TRANSFER [J].

MACLAINECROSS, IL ;

BANKS, PJ .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1972, 15 (06) :1225-+

[5] Heat and mass transfer in composite desiccant pore structures for dehumidification [J].

Majumdar, P .

SOLAR ENERGY, 1998, 62 (01) :1-10

[6] MOISTURE TRANSPORT IN SILICA-GEL PACKED-BEDS .1. THEORETICAL-STUDY [J].

PESARAN, AA ;

MILLS, AF .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1987, 30 (06) :1037-1049

[7]

Samarskii A. A., 1995, Computational Heat Transfer

[8] EFFECT OF AXIAL SOLID HEAT-CONDUCTION AND MASS DIFFUSION IN A ROTARY HEAT AND MASS REGENERATOR [J].

SAN, JY ;

HSIAU, SC .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1993, 36 (08) :2051-2059

[9] Energy wheel effectiveness: part I - development of dimensionless groups [J].

Simonson, CJ ;

Besant, RW .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1999, 42 (12) :2161-2170

[10]

SIMONSON CJ, 1998, ASME, V120, P699

← 1 2 →