On numerical study of calcium sulphate fouling under sub-cooled flow boiling conditions

被引：19
|
作者：
Haghshenasfard, Masoud [1 ]
Yeoh, Guan Heng [2 ]
Dahari, Mahidzal [3 ]
Hooman, Kamel [4 ]
机构：
[1] Isfahan Univ Technol, Dept Chem Engn, Esfahan, Iran
[2] Univ New S Wales, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia
[3] Univ Malaya, Dept Mech Engn, Kuala Lumpur, Malaysia
[4] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
来源：
APPLIED THERMAL ENGINEERING | 2015年 / 81卷
关键词：
Calcium sulphate fouling; Multicomponent two-fluid model; Sub-cooled flow boiling; SCALE FORMATION; HEAT-TRANSFER; 2-PHASE FLOW; PREDICTION; EXCHANGERS; DEPOSITION; DIHYDRATE; 2-FLUID; CACO3; WATER;
D O I：
10.1016/j.applthermaleng.2015.01.079
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Fouling rate of calcium sulphate is investigated based on the development of a multicomponent model to handle the two-phase flow of liquid mixture and vapour bubbles for the sub-cooled flow boiling. Effects of operating conditions, as well as wall roughness, on the heat transfer and fouling rate are studied. Fouling resistance increased with increasing fluid velocity. Deposition rate increases rapidly with increasing surface temperature while heat transfer coefficient decreases at higher surface temperature. Nevertheless, the bulk temperature does not strongly influence the heat transfer coefficient, thermal resistance and fouling rate. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：18 / 27
页数：10
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