• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat and mass transfer in unsaturated porous media: Moisture effects in compost piles self-heating
【24h】

Heat and mass transfer in unsaturated porous media: Moisture effects in compost piles self-heating

机译：不饱和多孔介质中的传热和传质：堆肥堆中的水分效应自热

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

摘要

A mathematical model relating heat and mass transfer in compost pile disposal in field is presented. The unsteady non linear mathematical diffusion model is solved through the finite volume method. The volumetric heat generation caused by the action of aerobic bacteria and by oxidation of cellulose in a porous media is incorporated as a function of the means moisture by a source term. Field studies in compost pile exposed to atmospheric conditions were made trying to reproduce the conditions in which self-heating and combustion may take place. Inside a compost pile made of solid residues obtained after municipal waste water treatment, temperature changes, oxygen contents and moisture were measured in time and depth. The mathematical model and numerical simulations in two dimensions, describe the internal changes of heat, oxygen and moisture observed in fields conditions and with this quantify the effects of the moisture in the temperature and oxygen concentration.
机译：建立了堆肥堆场热质传递的数学模型。非稳态非线性数学扩散模型通过有限体积法求解。由有氧细菌的作用和纤维素在多孔介质中的氧化所引起的体积热量的产生是根据源术语的平均湿度的函数。在堆肥堆暴露于大气条件下进行了现场研究，试图重现可能发生自热和燃烧的条件。在由市政废水处理后获得的固体残留物制成的堆肥堆中，按时间和深度测量温度变化，氧含量和水分。二维的数学模型和数值模拟描述了在田间条件下观察到的热量，氧气和水分的内部变化，从而量化了水分对温度和氧气浓度的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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