کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11007381 | 1521388 | 2018 | 77 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermoeconomic analysis of a gas turbine and cascaded CO2 combined cycle using thermal oil as an intermediate heat-transfer fluid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper reports an investigation of a gas turbine (GT) and two-stage cascaded supercritical and transcritical CO2 (s-CO2/t-CO2) combined power cycle using liquefied natural gas (LNG) as a low-temperature heat sink. This cycle may be well-suited for installation near LNG import terminals. GT exhaust supplies input heat to an intermediate s-CO2 cycle through a thermal oil loop. Waste heat from the s-CO2 cycle and residual heat from the GT cycle drives a lower temperature t-CO2 cycle. The t-CO2 cycle is LNG-cooled. A solution procedure is performed to perform a coupled analysis of the thermodynamic and economic performance of this combined cycle. Results show that the GT-cascade CO2 combined cycle has an optimal operating point determined by the s-CO2 compressor inlet conditions. Genetic algorithm (GA) optimization indicates that a Taurus 60â¯GT-cascaded CO2 combined cycle could reach 51.44% efficiency. For 20-year lifetime and 5% rate of interest, thermoeconomic optimization (after-tax profit, ATP as objective) results show ATP, levelized cost of electricity (LCOE) and net power are $2.935â¯Ãâ¯106, $0.0420â¯kWhâ1 and 8.886â¯MW, respectively. Findings suggest that the GT-cascaded CO2 combined cycle is an efficient and commercially viable technology for power generation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 162, 1 November 2018, Pages 1253-1268
Journal: Energy - Volume 162, 1 November 2018, Pages 1253-1268
نویسندگان
Yue Cao, Alexander S. Rattner, Yiping Dai,