亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

南瓜漿滾筒干燥動(dòng)力學(xué)模型
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

科研院所技術(shù)開發(fā)研究專項(xiàng)資金資助項(xiàng)目(2010EG119164)


Kinetics Model of Drum Drying of Pumpkin Pulp
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    以輥式布料的單滾筒干燥機(jī)為對(duì)象進(jìn)行南瓜漿滾筒干燥試驗(yàn),探討了滾筒干燥過(guò)程中物料的干燥動(dòng)力學(xué)特性及其干燥動(dòng)力學(xué)模型。根據(jù)物料的狀態(tài)將滾筒干燥過(guò)程分為漿狀和膜狀兩個(gè)階段,測(cè)定了不同蒸氣壓力下物料的含水率,分析了干燥速率隨蒸氣壓力和時(shí)間的變化規(guī)律。結(jié)果表明:物料中的水分大部分在漿狀區(qū)中蒸發(fā),蒸氣壓力越高,干燥速率越快;物料在膜狀區(qū)中為降速干燥階段,蒸氣壓力越高膜狀區(qū)起始含水率越低,起始階段的干燥速率越慢,干燥速率下降也越慢,干燥時(shí)間越短。膜狀區(qū)物料含水率的試驗(yàn)數(shù)據(jù)與主要薄層干燥模型進(jìn)行擬合,Midilli-Kucuk模型可以很好地預(yù)測(cè)南瓜漿滾筒干燥的動(dòng)力學(xué)特性。

    Abstract:

    Drum drying characteristics of pumpkin pulp were investigated by using a single drum dryer with applicator rolls. The drum drying process was divided into two phases: pulp phase and flake phase. Under these two conditions, moisture content of the samples under different steam pressures was measured in order to analyze the relationship of the drying rate with the inner pressure and drying time. It indicated from the results that, most of the moisture evaporated during the pulp phase. The higher the steam pressure was, the higher the drying rate became. It was also shown that during the flake phase, only falling rate period was taken place. As the steam pressure increased, on one hand, the initial moisture content of flake phase became less and the drying rate became decreased, on the other hand, the decreasing of the drying rate was slow down and the drying time was much shorter. The experimental moisture loss data were fitted with 10 thin-layer drying models. Consequently, of all the drying models, a semi-theoretical Midilli-Kucuk model was fitted best.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王瑾,李樹君,林亞玲,楊延辰,趙慶亮,韓清華.南瓜漿滾筒干燥動(dòng)力學(xué)模型[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(4):126-131. Wang Jin, Li Shujun, Lin Yaling, Yang Yanchen, Zhao Qingliang, Han Qinghua. Kinetics Model of Drum Drying of Pumpkin Pulp[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(4):126-131.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2012-04-18
  • 出版日期: