超临界CO2布雷顿循环余热回收系统性能分析与优化
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余廷芳,宋凌
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Performance analysis and optimization of supercritical CO2 Brayton cycle waste heat recovery system
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Ting-fang YU,Ling SONG
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表 5 SCBC和SCBC/KC及底循环KC和ORC模型验证 |
Tab.5 Model validation of SCBC and SCBC/KC and bottom cycle KC and ORC |
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循环 | 设定参数 | 不同工况 | ηtr/% | ηt/% | Δ/% | KC[4] | wk=0.5, p05=681 kPa | θw=100 ℃,pg=1 767 kPa | 6.60 | 6.41 | 2.88 | θw=120 ℃,pg=2 411 kPa | 8.87 | 8.80 | 0.79 | θw=140 ℃,pg=3 161 kPa | 10.05 | 10.64 | 5.87 | ORC[19] | R245fa | θw=119.80 ℃,p010=178.00 kPa | 13.68 | 13.63 | 0.37 | R601 | θw=125.50 ℃,p010=82.00 kPa | 14.59 | 14.57 | 0.14 | SCBC[4] | PR=3, p1=7 400 kPa, θ5=550 ℃ | — | 39.61 | 39.60 | 0.03 | SCBC/KC[4] | wk=0.5, θw=120 ℃,pg=1 200 kPa, p05=410 kPa | — | 41.29 | 41.26 | 0.07 |
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