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Grey relational analysis of an integrated cascade utilization system of geothermal water
Luo, Xianglong1,2; Wang, Yongzhen1; Zhao, Jun2; Chen, Ying1; Mo, Songping1; Gong, Yulie3
2016
Source PublicationINTERNATIONAL JOURNAL OF GREEN ENERGY
Volume13Issue:1Pages:14-27
AbstractWith the drastic decrease in fossil resources and rapid deterioration of the global environment, the utilization of geothermal resources has been strongly advocated. The combination of heat, power, and cold utility generation is commonly used to increase the utilization efficiency of geothermal resources. In this study, an integrated cascade utilization system of waste geothermal water (ICUWGW) from a flash geothermal power plant in China is established to increase the utilization efficiency of geothermal water. The waste geothermal water leaving the power plant is proposed for further use in cascade for two-stage LiBr/H2O absorption cooling, agricultural product drying, and residential bathing. Twelve candidate temperature schemes showing different inlet and outlet temperatures of every subsystem are proposed for the ICUWGW. Several criteria are selected for the evaluation and screening of the candidate schemes. Grey relational analysis incorporating analytic hierarchy process is conducted to screen the optimal temperature scheme for the ICUWGW to meet the comprehensive criteria of thermodynamics and economics. Results show that the optimal scheme features significant improvement in energy efficiency, exergy efficiency, and equivalent electricity generation efficiency compared with those of the current geothermal power plant. The investment payback time of the additional subsystems for cooling, drying, and bathing is 1.85 years. Exergy analysis is also conducted to determine the further optimization potential of the optimal ICUWGW. Sensitivity analysis of electricity price on the performance of the optimal ICUWGW is also performed.
SubtypeArticle
KeywordCascade Utilization Exergy Analysis Geothermal Resource Grey Relational Analysis Multi Criteria
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1080/15435075.2014.896259
WOS Subject ExtendedThermodynamics ; Energy & Fuels
WOS KeywordREFRIGERATION SYSTEM ; OPTIMIZATION ; ENERGY ; POWER ; PARAMETERS ; DRIVEN ; FLUIDS
Indexed BySCI
Language英语
WOS SubjectThermodynamics ; Energy & Fuels
WOS IDWOS:000363188800002
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10878
Collection中国科学院广州能源研究所
Affiliation1.Guangdong Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Mat & Energy, Guangzhou, Guangdong, Peoples R China
2.Tianjin Univ, Key Lab Efficient Utilizat Low & Medium Grade Ene, Minist Educ, Tianjin 300072, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Luo, Xianglong,Wang, Yongzhen,Zhao, Jun,et al. Grey relational analysis of an integrated cascade utilization system of geothermal water[J]. INTERNATIONAL JOURNAL OF GREEN ENERGY,2016,13(1):14-27.
APA Luo, Xianglong,Wang, Yongzhen,Zhao, Jun,Chen, Ying,Mo, Songping,&Gong, Yulie.(2016).Grey relational analysis of an integrated cascade utilization system of geothermal water.INTERNATIONAL JOURNAL OF GREEN ENERGY,13(1),14-27.
MLA Luo, Xianglong,et al."Grey relational analysis of an integrated cascade utilization system of geothermal water".INTERNATIONAL JOURNAL OF GREEN ENERGY 13.1(2016):14-27.
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