Solar-Enhanced Air-Cooled Heat Exchangers for Geothermal Power Plants
Hooman, Kamel1; Huang, Xiaoxue2; Jiang, Fangming2
Source PublicationENERGIES
AbstractThis paper focuses on the optimization of a Solar-Enhanced Natural-Draft Dry-Cooling Tower (SENDDCT), originally designed by the Queensland Geothermal Energy Centre of Excellence (QGECE), as the air-cooled condenser of a geothermal power plant. The conventional method of heat transfer augmentation through fin-assisted area extension is compared with a metal foam-wrapped tube bundle. Both lead to heat-transfer enhancement, albeit at the expense of a higher pressure drop when compared to the bare tube bundle as our reference case. An optimal design is obtained through the use of a simplified analytical model and existing correlations by maximizing the heat transfer rate with a minimum pressure drop goal as the constraint. Sensitivity analysis was conducted to investigate the effect of sunroof diameter, as well as tube bundle layouts and tube spacing, on the overall performance of the system. Aiming to minimize the flow and thermal resistances for a SENDDCT, an optimum design is presented for an existing tower to be equipped with solar panels to afterheat the air leaving the heat exchanger bundles, which are arranged vertically around the tower skirt. Finally, correlations are proposed to predict the total pressure drop and heat transfer of the extended surfaces considered here.
KeywordHeat Exchangers Air-cooled Condensers Geothermal Cooling Tower
WOS HeadingsScience & Technology ; Technology
WOS Subject ExtendedEnergy & Fuels
Indexed BySCI
WOS SubjectEnergy & Fuels
WOS IDWOS:000414578400231
PublisherMDPI AG
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorHooman, Kamel
Affiliation1.Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst,Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Hooman, Kamel,Huang, Xiaoxue,Jiang, Fangming. Solar-Enhanced Air-Cooled Heat Exchangers for Geothermal Power Plants[J]. ENERGIES,2017,10(10).
APA Hooman, Kamel,Huang, Xiaoxue,&Jiang, Fangming.(2017).Solar-Enhanced Air-Cooled Heat Exchangers for Geothermal Power Plants.ENERGIES,10(10).
MLA Hooman, Kamel,et al."Solar-Enhanced Air-Cooled Heat Exchangers for Geothermal Power Plants".ENERGIES 10.10(2017).
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