| 真空管热水器的非称态效率方法与参数 |
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| 引用本文： | 胡文旭.真空管热水器的非称态效率方法与参数[J].西北大学学报,2001,31(3):195-198. |
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| 作者姓名： | 胡文旭 |
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| 作者单位： | 陕西师范大学陕西省物理研究所，陕西西安710062 |
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| 基金项目： | 陕西省自然科学基金资助项目(96YK06) |
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| 摘 要： | 导出了真空管太阳能热水器的非稳态效率方程，讨论了真空集热管的物性参数，热水器的结构，反射板对非稳定效率方程的影响，给出了有效透过吸收积计算表达式，根据所讨论的结果模拟了在不同环境温度下散热系数随工质平均温度与环境温度差的变化，最终模拟限一种虹吸式真空管太阳能热水器的非稳态效率方程，与实验得出的非稳态效率议程基本吻合。
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| 关 键 词： | 非稳态效率方程 热转移因子 太阳能 真空集热管 热水管 散热系数 |
| 文章编号： | 1000-274X(2001)03-0195-04 |
| 修稿时间： | 2000年6月23日 |
Non-steady state efficient equation and the calorifics parameter of evacuated-tube solar water heater |
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| HU Wen,xu.Non-steady state efficient equation and the calorifics parameter of evacuated-tube solar water heater[J].Journal of Northwest University(Natural Science Edition),2001,31(3):195-198. |
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| Authors: | HU Wen xu |
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| Abstract: | The non steady state efficiency equation of evacuated tube solar water heater is derived. The effects of the physics parameters of evacuated tube, the structure of the water heater and the reflector board on non steady state efficiency equation are discussed. Expression for the product of effective transmittivity and absorptivity is presented. The variations of heat loss coefficient are simulated along with difference in working fluid mean temperature and ambience temperature under differential ambience temperature. At last the non steady state efficiency equation of the evacuated tube solar water heater are simulated. The equation can inosculate the equation gained by experiment. |
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| Keywords: | non steady state efficiency equation heat removal factor solar energy evacuated tuber solar water heater |
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