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生物質(zhì)熱解油噴霧特性試驗
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國家自然科學(xué)基金資助項目（50930006,、50876099）和國家重點基礎(chǔ)研究發(fā)展計劃（973計劃）資助項目（2007CB210203）


Spray Characteristics Experiment of Rice Husk Derived Bio-oil
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    摘要:

    采用相位多普勒粒子分析儀，研究生物質(zhì)熱解油噴霧特性，考察氣液質(zhì)量流量比對液滴平均直徑的影響,，并與0號柴油和生物油/乙醇混合燃料的噴霧特性進(jìn)行對比,。結(jié)果表明：生物油的索特平均直徑沿著軸向距離的增加呈先減小后增大的趨勢,，沿著徑向不斷增大,；隨著氣液質(zhì)量流量比的增加,，液滴的平均直徑不斷減小,，但減小趨勢變緩,；柴油霧化性能最好，生物油最差,，添加乙醇能增強(qiáng)生物油的霧化性能,。利用試驗數(shù)據(jù)擬合得到生物油索特平均直徑的經(jīng)驗公式，擬合值與試驗測量值吻合良好,，為生物油燃燒噴嘴的設(shè)計和運行工況的優(yōu)化提供了參考,。

    Abstract:

    The spray characteristics of bio-oil for combustion were investigated by phase Doppler anemometry (PDA) with Sauter mean diameter (SMD) as evaluating indicator. The effects of air liquid mass flow ratio (ALR) on SMD were analyzed. The SMD distributions along axial direction of bio-oil, diesel and bio-oil/ethanol blend spray droplets were also compared. The results showed that SMD of bio-oil spray droplets exhibited a tendency to first decrease and then increase along axial direction and increased continuously along radial direction. The SMD diminished with the increase of gas-liquid flow ratio and had little variation when the gas-liquid flow ratio exceeded a certain value. Among three kinds of fuels, the atomizing quality of diesel was the best, while that of the bio-oil was the worst. By adding ethanol to the bio-oil, the atomizing quality was improved. The empirical equation for the SMD was derived. The predicted results were found to be in a good agreement with the experiment results, which confirmed the reliability of the empirical equation and would offer information for designing bio-oil spray nozzle and optimizing bio-oil combustion conditions.

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張棟,龍?zhí)?朱錫鋒.生物質(zhì)熱解油噴霧特性試驗[J].農(nóng)業(yè)機(jī)械學(xué)報,2012,43(2):101-105. Zhang Dong, Long Tan, Zhu Xifeng. Spray Characteristics Experiment of Rice Husk Derived Bio-oil[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(2):101-105.

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  • 在線發(fā)布日期: 2012-02-17
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