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冷藏運(yùn)輸廂內(nèi)流場(chǎng)和溫度場(chǎng)協(xié)同控制
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國家國際科技合作專項(xiàng)資助項(xiàng)目（2013DFA31920）、國家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目（2012AA101704）和浙江省自然科學(xué)基金資助項(xiàng)目（LY13E050023,、LY14F020023）


Cooperative Control of Flow Field and Temperature Field in Refrigerated Transport Carriage
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    摘要:

    基于楊梅多孔介質(zhì)特征推導(dǎo)熱傳導(dǎo)平衡方程，在冷藏車廂物理模型中分析了流場(chǎng)的流動(dòng)特性,，得到了車廂內(nèi)各橫,、縱截面的流場(chǎng)和溫度場(chǎng)的分布狀況,。采用協(xié)同控制車門右側(cè)頂部隔熱氣簾風(fēng)機(jī),，使其風(fēng)向垂直于等溫線方向間歇性定速運(yùn)行,，實(shí)車溫度數(shù)據(jù)采集顯示橫截面最高溫度由3.8℃降至1.67℃，在沿長(zhǎng)度方向截面3層中溫度標(biāo)準(zhǔn)差最大值為0.387,。結(jié)果表明，僅調(diào)節(jié)冷風(fēng)機(jī)轉(zhuǎn)速無法有效改善溫度均勻分布,，根據(jù)等溫線梯度方向和流線切線夾角開啟隔熱氣簾風(fēng)機(jī)協(xié)同調(diào)節(jié)風(fēng)向,，能夠有效改善溫度場(chǎng)均勻性分布程度。

    Abstract:

    Heat balance formula of red bayberry was developed. The air flow and temperature field heterogeneity’s properties of flow field in refrigerated transport carriage’s physical model and the distributions of flow field and temperature field in cross sections and longitudinal sections were analyzed. The wind direction of top right adiabatic gas curtain was set perpendicular to isothermal curves to control the gas curtain fan with constant speed intermittently based on coordination principle. The test data of refrigerated transport carriage showed the highest temperature in cross sections dropped from 3.8℃ to 1.67℃, the biggest standard deviation amplitude of temperature values was 0.387 in three cross sections with length direction. The results indicated that only accelerating the gas curtain fan’s speed could not improve the temperature distribution homogeneity effectively, opening the adiabatic gas curtain and adjusting the wind direction in included angle of gradient direction of isothermal curves and tangent direction of flow line based on cooperative principle could improve the temperature distribution homogeneity effectively. 

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翁衛(wèi)兵,房殿軍,李強(qiáng),曹淼龍,吳堅(jiān),徐興.冷藏運(yùn)輸廂內(nèi)流場(chǎng)和溫度場(chǎng)協(xié)同控制[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(6):260-265,290. Weng Weibing, Fang Dianjun, Li Qiang, Cao Miaolong, Wu Jian, Xu Xing. Cooperative Control of Flow Field and Temperature Field in Refrigerated Transport Carriage[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(6):260-265,290.

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  • 收稿日期:2014-02-10
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  • 在線發(fā)布日期: 2014-06-10
  • 出版日期: 2014-06-10
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