ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

日光溫室?guī)жQ向空氣通道的太陽能相變蓄熱墻體體系
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國家自然科學(xué)基金資助項(xiàng)目(51368060,、50978002)和北京工業(yè)大學(xué)博士創(chuàng)新基金資助項(xiàng)目


Performance of Phase Change Material Wall with Vertical Air Channels Integrating Solar Concentrators
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:

    基于已有日光溫室專用多曲面槽式空氣集熱器,,提出一種帶豎向空氣通道的太陽能相變蓄熱墻體構(gòu)筑體系,通過主動(dòng)與被動(dòng)相結(jié)合的蓄熱方式,,提高日光溫室后墻體的太陽能熱利用率,。為了驗(yàn)證構(gòu)筑體系的科學(xué)性和可行性,,分別搭建了日光溫室專用多曲面槽式空氣集熱器試驗(yàn)系統(tǒng)和帶豎向空氣通道的相變蓄熱墻體試驗(yàn)系統(tǒng),分析了太陽輻射強(qiáng)度,、集熱器內(nèi)空氣流速,、日光溫室中間顯熱蓄熱墻體層內(nèi)空氣流動(dòng)參數(shù)(空氣流速、空氣通道間距,、空氣流動(dòng)方向)等對(duì)空氣集熱器太陽能熱利用率以及墻體主動(dòng)蓄熱能力的影響規(guī)律,。研究結(jié)果表明:當(dāng)集熱器內(nèi)空氣速度為1.4~1.8m/s時(shí),集熱器的綜合集熱性能最佳,,集熱量隨著太陽輻射強(qiáng)度的增加而升高,;當(dāng)墻體內(nèi)豎向空氣通道間距為400mm、空氣通道內(nèi)空氣速度為0.26m/s,、空氣流動(dòng)方向?yàn)樯线M(jìn)下出時(shí),,相變蓄熱墻體換熱效率為66.2%,主動(dòng)蓄熱量約為9.43MJ/m3,,其中中間砌塊層的蓄熱量約占82.3%,,墻體日蓄放熱效率為98.4%。

    Abstract:

    Due to the limit of heat transfer performance of building materials, the depth of the north wall affected by solar radiation was shallow in the passive solar greenhouse, which weakened the heat storage capacity of the wall interior. In this study, a phase change material wall with vertical air channels integrating solar concentrators was developed to fully strengthen the temperature and heat storage capacity of the wall interior by the active method and improve the temperature and heat storage capacity of PCM wallboards by the passive method. In order to prove the scientificity and feasibility of the identity, the experimental setup of multiple surfaces trough solar air collector and the experimental setup of phase change material wall with vertical air channels were built. And influencing characteristics of the air velocity in the collector and solar radiation on solar concentrators and influencing characteristics of the gap between air channels, the flow direction of heated air, and the velocity of the supply air on phase change material wall with vertical air channels were experimentally investigated, respectively. The results showed that the suitable air velocity in the collector was 1.4~1.8m/s, and the heat collection rose with the increase of solar radiation. The optimum conditions of phase change material wall were experimentally recommended: the gap was 400mm, the flow direction was downward, and the supply air velocity was 0.26m/s. While the experiment was carried out on the optimum conditions, the heat exchange effectiveness was 66.2%, and the active heat storage density was 9.43MJ/m3, 82.3% of which were stored in the block layer. Moreover, the discrepancy of the active heat storage and the heat release was 1.6%.

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

凌浩恕,陳 超,陳紫光,馬彩雯,管 勇,李 娜.日光溫室?guī)жQ向空氣通道的太陽能相變蓄熱墻體體系[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2015,46(3):336-343. Ling Haoshu, Chen Chao, Chen Ziguang, Ma Caiwen, Guan Yong, Li Na. Performance of Phase Change Material Wall with Vertical Air Channels Integrating Solar Concentrators[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(3):336-343.

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:2014-05-04
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2015-03-10
  • 出版日期: 2015-03-10
文章二維碼