Dynamic modeling of the environment in a naturally ventilated, fog-cooled greenhouse
Dynamic modeling of the environment in a naturally ventilated, fog-cooled greenhouse
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DOI：
10.1016/j.renene.2005.07.013
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发表时间：
2006-08-01
期刊：
影响因子：
8.7
通讯作者：
Kozai, Toyoki
中科院分区：
文献类型：
--
作者：
Abdel-Ghany, Ahmed M.;Kozai, Toyoki
建立了自然通风雾冷式温室内热量和水汽传输的动态模拟模型，预测了温室内空气、植物、覆盖物和地面的温度以及相对湿度。还预测了蒸腾和蒸发。2004年8月9日，在东京地区的一个炎热的夏天，对面积为26 m2的玻璃温室的内外环境进行了测定。通过以0.01kg·s（-1）的恒定速率喷射水雾，以不同的雾化和间隔时间（0.5分钟开，然后1.5分钟关，1分钟开-3分钟关和1.5分钟开-4.5分钟关）间歇地冷却温室。对微分方程采用预估校正技术，对代数方程采用迭代法，对模型方程组进行数值求解。模型的输入参数是气象条件和温室覆盖物、植物、空气和土壤的热物理性质。将该模型的预测结果与实测值进行了比较，结果表明，在不同的起雾时间和间隔时间下，预测结果与实测值吻合较好。(c)2005爱思唯尔有限公司保留所有权利。
A dynamic simulation model for heat and water vapor transfer in a naturally ventilated, fog-cooled greenhouse was developed to predict the temperatures of air, plant, cover and floor surface and the relative humidity in the greenhouse. Transpiration and evaporation were also predicted. An experiment was conducted on a hot summer day (Aug. 9, 2004) in the Tokyo area to measure the environments inside and outside a glass-covered greenhouse with a floor area of 26 m(2). The greenhouse was cooled intermittently by spraying water fog at a constant rate of 0.01 kg s(-1) for different fogging and interval times (0.5 min on followed by 1.5 min off, 1 min on-3 min off and 1.5 min on-4.5 min off). The system of equations of the model was solved numerically by using the predictor-corrector technique for the differential equations and the iteration procedure for the algebraic equation. The input parameters to the model were the meteorological conditions and the thermo-physical properties of the greenhouse cover, plant, air and soil. The predicted results using the present model were compared with the measured values and showed a good agreement at different fogging and interval times. (c) 2005 Elsevier Ltd. All rights reserved.