本文選題：梯級(jí)分流 + 有機(jī)朗肯循環(huán)�。� 參考：《熱能動(dòng)力工程》2016年10期

【摘要】：提出一種梯級(jí)分流ORC(有機(jī)朗肯循環(huán))系統(tǒng),并建立有/無(wú)分流兩種工況下系統(tǒng)熱力學(xué)模型。系統(tǒng)分別以各級(jí)換熱器中蒸發(fā)溫度及輸出功為自變量和目標(biāo)函數(shù),利用遺傳算法對(duì)其進(jìn)行優(yōu)化,并對(duì)兩工況下系統(tǒng)性能進(jìn)行比較,分析了級(jí)數(shù)n對(duì)系統(tǒng)性能的影響以及在梯級(jí)系統(tǒng)中各級(jí)循環(huán)的變化規(guī)律。結(jié)果表明,采用分流技術(shù)能夠提高各換熱器中最佳蒸發(fā)溫度,降低預(yù)熱器火用損,使系統(tǒng)性能增加;且隨系統(tǒng)級(jí)數(shù)n增加,其性能逐漸升高,但增幅逐漸減小。當(dāng)n=5時(shí),梯級(jí)分流系統(tǒng)較ORC系統(tǒng)輸出功及熱效率分別高出189.47 k W和0.31%。在ORC系統(tǒng)中采用梯級(jí)分流技術(shù)具有重要意義,能夠較大程度實(shí)現(xiàn)低品位能源的回收利用。
[Abstract]:An ORC (organic Rankine cycle) system is proposed, and the thermodynamic model of the system under two working conditions with or without shunt is established. The system takes evaporation temperature and output work as independent variables and objective functions respectively, optimizes them by genetic algorithm, and compares the system performance under two working conditions. The influence of series n on the performance of the system and the variation of the cycle in the cascade system are analyzed. The results show that the optimum evaporation temperature can be increased by using the split flow technique, the exergy loss of preheater can be reduced, and the system performance will increase with the increase of system series n, but the increase will decrease gradually. When n = 5, the output work and thermal efficiency of the cascade shunt system are 189.47 kW and 0.31 higher than that of the ORC system, respectively. It is of great significance to adopt cascade shunt technology in ORC system, which can realize the recovery and utilization of low grade energy to a large extent.
【作者單位】： 遼寧工程技術(shù)大學(xué)機(jī)械工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51574136,51574138)
【分類(lèi)號(hào)】：TK115

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李艷;連紅奎;顧春偉;;有機(jī)朗肯循環(huán)系統(tǒng)及其透平設(shè)計(jì)研究[J];工程熱物理學(xué)報(bào);2010年12期

2 劉經(jīng)武;戴義平;;基于有機(jī)朗肯循環(huán)低溫余熱利用研究[J];東方汽輪機(jī);2010年02期

3 張思朝;馬國(guó)遠(yuǎn);許樹(shù)學(xué);;有機(jī)朗肯循環(huán)低品位能回收技術(shù)[J];應(yīng)用能源技術(shù);2012年05期

4 張軍輝;劉娟芳;陳清華;;有機(jī)朗肯循環(huán)系統(tǒng)最佳蒸發(fā)溫度和，

本文編號(hào)：1820613