• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy conversion & management >A study on temperature spatial distribution of a greenhouse under solar load with considering crop transpiration and optical effects
【24h】

A study on temperature spatial distribution of a greenhouse under solar load with considering crop transpiration and optical effects

机译：A study on temperature spatial distribution of a greenhouse under solar load with considering crop transpiration and optical effects

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Spatial temperature distribution of a greenhouse is critical to precision agriculture management, especially for the vertical cultivation mode. Crop transpiration and optical effects influence spatial temperature distribution of a greenhouse, which, however, were often omitted in literature. In this work, a Computational Fluid Dynamics model on studying spatial temperature distribution of a greenhouse was developed with considering the effects of air (light absorption), crop (light absorption, reflection, transmission, and transpiration), and soil (light absorption and heat radiation) in the greenhouse under dynamic solar load based on the law of energy conservation. A set of field tests was used to validate the developed Computational Fluid Dynamics model. Spatial temperature distributions of the greenhouse under different scenarios were simulated with and without considering crop effects. The results show that the temperature standard deviation of the greenhouse with considering the crop effects was about 31.68% higher than that without considering the crop effects. This implies that greenhouse temperature distribution is significantly influenced by crop transpiration and optical effects. The results also show that the highest temperature appears in the air region below the top of greenhouse and changes with the dynamic solar radiation direction, and the temperature may vary by about 63.65% during the day. There is a temperature difference of 2 ?-3 ? at the same height level between the greenhouse with and without considering the crop effects. This work is important for understanding the non-uniform temperature spatial distribution pattern of a greenhouse as affected by crops, and provides information for sensor deployment, monitoring, and control of greenhouse temperature.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号