發(fā)布時(shí)間：2018-08-01 14:09

【摘要】：叉排管束與M-W引流絲網(wǎng)交替吸收器是一種將熱質(zhì)耦合傳遞與絕熱傳質(zhì)相結(jié)合而開發(fā)的新型吸收器。該文基于VOF方法建立溴化鋰吸收器中溶液降膜吸收水蒸汽過程的CFD模型,展示在叉排管束與M-W引流絲網(wǎng)交替吸收器中和對(duì)比方案的光管束吸收器上溶液的流動(dòng)狀態(tài)以及溫度和濃度分布云圖;給出不同溶液進(jìn)口噴淋密度和溶液濃度對(duì)2種吸收器傳熱傳質(zhì)性能的影響的模擬和實(shí)驗(yàn)結(jié)果,表明在計(jì)算范圍內(nèi),叉排管束與M-W引流絲網(wǎng)交替吸收器的傳熱系數(shù)和傳質(zhì)系數(shù)的平均值可比光管束吸收器分別提高33.4%和55.4%。
[Abstract]:The alternative absorber of cross row tube bundle and M-W draining wire mesh is a new absorber developed by combining heat and mass coupling transfer with adiabatic mass transfer. Based on the VOF method, a CFD model for the solution falling film absorption of water vapor in lithium bromide absorber is established in this paper. The flow state of the solution and the temperature and concentration distribution on the optical tube bundle absorber with the contrast scheme are shown in the alternate absorber of the cross row tube bundle and M-W draining wire mesh. The simulation and experimental results of the effects of different solution inlet spray density and solution concentration on the heat and mass transfer properties of the two absorbers are given. The average heat transfer coefficient and mass transfer coefficient of the alternative absorber with M-W draining wire were increased by 33.4% and 55.4% respectively compared with the optical tube bundle absorber.
【作者單位】： 東南大學(xué)能源與環(huán)境學(xué)院能源熱轉(zhuǎn)換及其過程測(cè)控教育部重點(diǎn)實(shí)驗(yàn)室;安徽工業(yè)大學(xué)建筑工程學(xué)院;
【基金】：國家自然科學(xué)基金(51206022;51276035)
【分類號(hào)】：TB65
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本文編號(hào)：2157825