【摘要】：建立有機(jī)朗肯循環(huán)熱力學(xué)模型和蒸發(fā)器傳熱模型;基于工質(zhì)的實(shí)驗(yàn)經(jīng)驗(yàn)狀態(tài)方程,利用REFPROP 8.0軟件獲得非共沸工質(zhì)物性;以獲得最佳的凝汽器溫度匹配為原則選擇工質(zhì)。采用種溫度的地?zé)崮?在給定的蒸發(fā)器和凝汽器夾點(diǎn)溫差下,分析了采用組分比例為0.64:0.36的R600a/R601非共沸工質(zhì)的有機(jī)朗肯循環(huán)發(fā)電系統(tǒng)的特性,并與R601純工質(zhì)發(fā)電循環(huán)進(jìn)行了比較。結(jié)果表明:以對(duì)外輸出功為目標(biāo)函數(shù)的利用地?zé)岬闹械蜏赜袡C(jī)朗肯循環(huán)發(fā)電系統(tǒng)中不宜加入回?zé)崞?對(duì)于蒸發(fā)器熱源進(jìn)出口溫差較小的工況,如熱源來(lái)自水蒸氣凝結(jié)放熱,采用混合工質(zhì)的循環(huán)的性能不如純工質(zhì)的;有機(jī)朗肯循環(huán)采用混合工質(zhì)時(shí)其最大對(duì)外輸出功要高于純工質(zhì)的,且熱源溫度越低時(shí),這種優(yōu)勢(shì)越明顯。
[Abstract]:The thermodynamic model of organic Rankine cycle and the heat transfer model of evaporator are established, the physical properties of non-azeotropic working fluid are obtained by REFPROP 8.0 software based on the experimental empirical state equation of working fluid, and the optimum temperature matching of condenser is selected as the principle. Under the given temperature difference between evaporator and condenser, the characteristics of organic Rankine cycle power generation system with R600a/R601 non-azeotropic working fluid of 0.64: 0.36 are analyzed and compared with R601 pure refrigerant cycle. The results show that a regenerator should not be added to the medium and low temperature organic Rankine cycle power generation system with the external output power as the objective function, and for the condition where the temperature difference between the inlet and outlet of the evaporator heat source is small, such as the heat source comes from the condensation heat release of water vapor, The performance of the cycle with mixed working fluid is not as good as that of pure working fluid, and the maximum output work of organic Rankine cycle is higher than that of pure working fluid, and the higher the temperature of heat source is, the more obvious this advantage is.
【作者單位】： 電站設(shè)備狀態(tài)監(jiān)測(cè)與控制教育部重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(U1361108)~~
【分類號(hào)】：TM619

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本文編號(hào)：2223314