| 辐射与导热复合换热熵产率传统公式质疑 |
| |
| 引用本文： | 刘林华,楚双霞. 辐射与导热复合换热熵产率传统公式质疑[J]. 太阳能学报, 2008, 29(9) |
| |
| 作者姓名： | 刘林华 楚双霞 |
| |
| 作者单位： | 哈尔滨工业大学能源科学与工程学院,哈尔滨,150001 |
| |
| 基金项目： | 国家自然科学基金，黑龙江省杰出青年科学基金 |
| |
| 摘 要： | 以冬季太阳照射下建筑物窗户玻璃内部辐射与导热复合换热过程为例,对传统的辐射换热局部熵产率计算公式进行了质疑.通过对窗户玻璃内部复合换热过程局部熵产率的分析,结果表明传统的辐射换热局部熵产率公式与热力学第二定律相矛盾,因而是错误的.其根源在于传统的辐射换热局部熵产率公式认为辐射热流密度由局部温度梯度所驱动.事实上,由于辐射传递过程的容积效应,辐射热流与所考虑的半透明介质系统整体温度分布有关.
|
| 关 键 词： | 熵产率 辐射换热 复合换热 计算公式 |
OPPUGN ON TRADITIONAL FORMULA OF LOCAL ENTROPY GENERATION RATE IN COUPLED RADIATION AND CONDUCTION HEAT TRANSFER PROCESSES |
| |
| Liu Linhua,Chu Shuangxia. OPPUGN ON TRADITIONAL FORMULA OF LOCAL ENTROPY GENERATION RATE IN COUPLED RADIATION AND CONDUCTION HEAT TRANSFER PROCESSES[J]. Acta Energiae Solaris Sinica, 2008, 29(9) |
| |
| Authors: | Liu Linhua Chu Shuangxia |
| |
| Affiliation: | Liu Linhua,Chu Shuangxia (School of Energy Science , Engineering,Harbin Institute of Technology,Harbin 150001,China) |
| |
| Abstract: | The traditional formula of local entropy generation rate of radiation heat transfer was oppugned.The local entropy generation rate of coupled radiation and conduction heat transfer within window glass was analyzed.The results showed that the traditional formula of local entropy generation rate of radiation heat transfer conflicts with the second law of thermodynamics, thus is incorrect.The root of this incorrectness is that the radiation heat flux is traditionally considered to be driven by the local temper... |
| |
| Keywords: | entropy generation rate radiative heat transfer semitransparent medium calculation formula |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
