| 低温多效压汽蒸馏海水淡化系统热力分析 |
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| 引用本文： | 王永青.低温多效压汽蒸馏海水淡化系统热力分析[J].化学工程,2010,38(2). |
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| 作者姓名： | 王永青 |
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| 作者单位： | 集美大学,机械工程学院,福建,厦门,361021 |
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| 基金项目： | 国家自然科学基金资助项目(50676023);;集美大学科研基金资助项目(2006-09) |
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| 摘 要： | 低温多效压汽蒸馏(LT-METVC)海水淡化是一种很有发展前途的海水淡化方法,文中首先探讨了海水淡化系统中盐水焓、熵、的计算方法,然后对典型LT-METVC流程进行了详细的热力学分析,包括重要参数对系统性能的影响规律和系统的利用。结果表明:驱动蒸汽压力升高,会使造水比增加、效率下降,比传热面积则基本不变;系统效数增加或压缩比降低,都会使系统造水比和效率提高、比传热面积增大。LT-METVC系统的效率很低,在示例中仅为1.3%。提出并初步讨论了进一步改善性能的途径。
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| 关 键 词： | 海水淡化 低温多效蒸发 蒸汽引射器 热力性能 |
Thermodynamic analysis of low-temperature multi-effect thermal vapor compression seawater desalination system |
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| WANG Yong-qing.Thermodynamic analysis of low-temperature multi-effect thermal vapor compression seawater desalination system[J].Chemical Engineering,2010,38(2). |
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| Authors: | WANG Yong-qing |
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| Affiliation: | College of Mechanical Engineering;Jimei University;Xiamen 361021;Fujian Province;China |
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| Abstract: | Low-temperature multi-effect thermal vapor compression(LT-METVC) desalination systems are identified as a promising way of producing fresh water from seawater.After the discussion of the calculation method for enthalpy,entropy and exergy of salty water in desalination systems,the thermodynamic performance,including parametric sensitivity analysis and exergy utilization,of a typical LT-METVC system was investigated.The results show that higher motive-steam pressure leads to higher performance ratio and lower... |
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| Keywords: | seawater desalination low-temperature multi-effect evaporation steam jet ejector thermodynamic performance |
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