Journal
APPLIED THERMAL ENGINEERING
Volume 93, Issue -, Pages 549-555Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2015.09.054
Keywords
Wet cooling tower; Non-uniform layout fillings; Thermal performance; Experimental research
Funding
- National Natural Science Foundation of China [51106092]
- Jinan University institute innovation plan [201303077]
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Based on the similarity theory, thermal-state model experiment in lab is performed to investigate the thermal performance of wet cooling towers under different layout patterns of fillings, and five kinds of layout patterns, including uniform layout and four kinds of non-uniform layout patterns, are studied in this paper. Experimental results manifest that the thermal performance of wet cooling towers under nonuniform layout patterns is outstanding by calculating and analyzing five performance parameters, which are ooling termperature difference, cooling efficiency, Merkel number, Lewis number and the ratio of evaporative heat rejection. Additionally, research also obtained the optimal three-block layout pattern of fillings in which the radius ratio of r(a)/r(c) is approximately 0.44 and r(b)/r(c) is around 0.71; here r(a), r(b) and r(c) are the radius of three blocks, respectively. What's more, compared with the uniform layout pattern of fillings, the thermal performance of the optimal layout pattern can enhance by 30% at maximum within the scope of this test. (C) 2015 Elsevier Ltd. All rights reserved.
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