| 温室多层覆盖传热系数与热节省率的工程算法 |
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| 引用本文： | 赵淑梅,马承伟,刘晨霞,张 义,张建宇,孙国涛.温室多层覆盖传热系数与热节省率的工程算法[J].农业工程学报,2011,27(7):264-269. |
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| 作者姓名： | 赵淑梅 马承伟 刘晨霞 张 义 张建宇 孙国涛 |
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| 作者单位： | 中国农业大学农业部设施农业工程重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金项目温室缀铝幕保温机理与性能的研究（50778173）；现代农业产业技术体系建设专项资金资助（CARS-25-D-04）；“十一五”科技支撑计划资源节约关键技术标准研制课题（2006BAK04A03）资助 |
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| 摘 要： | 针对温室环境工程设计和保温性评价中多层覆盖传热计算问题，研究了根据单层保温幕保温性数据确定多层覆盖传热系数的方法。运用工程传热学理论，推导了由单层保温幕热节省率计算多层保温幕热节省率的公式，进而可计算多层覆盖传热系数。计算式揭示了温室单层保温幕和多层覆盖传热参数间的定量关系，通过引入传热阻比这一新概念，形式更加简明。采用多种数据的综合检验结果表明，所提出计算式准确性较高，同一情况下由单层保温幕热节省率计算得出的3层保温幕热节省率，与直接获得的同一热节省率最大相差仅4.6%。论文提出的计算方法，可避免对多种材料组合的各种多层覆盖进行逐一测试，系统地解决了多层覆盖传热计算中热节省率和传热系数确定的问题。
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| 关 键 词： | 温室，热传递，计算，传热系数，多层覆盖，热节省率 |
| 收稿时间： | 2010/11/24 0:00:00 |
| 修稿时间： | 2011/5/22 0:00:00 |
Computing method for thermal transmittance and saving ratio of heat loss in multi-layer covering of greenhouse |
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| Zhao Shumei,Ma Chengwei,Liu Chenxi,Zhang Yi,Zhang Jianyu and Sun Guotao.Computing method for thermal transmittance and saving ratio of heat loss in multi-layer covering of greenhouse[J].Transactions of the Chinese Society of Agricultural Engineering,2011,27(7):264-269. |
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| Authors: | Zhao Shumei Ma Chengwei Liu Chenxi Zhang Yi Zhang Jianyu and Sun Guotao |
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| Abstract: | Aiming at computing the heat transfer through multi-layer covering in environmental control design and insulation performance evaluation of a greenhouse,a computing method for thermal transmittance of multi-layer covering was developed based on the data of a single screen.According to heat transfer theory,the formula for saving ratio of heat loss of multi-layer screens were established from that of a single screen,and then the method for calculating the thermal transmittance of multi-layer covering was deve... |
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| Keywords: | greenhouse heat transfer calculations thermal transmittance multi-layer covering saving ratio of heat loss |
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