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Low grade heat driven multi-effect distillation technology

机译:低品位热驱动多效蒸馏技术

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摘要

Low grade heat driven multi-effect distillation (MED) desalination has received tremendous attention recently. The primary reason is that many countries, such as Australia, are water short and conventional desalination technology is energy intensive. If the required energy hails from fossil fuel source, then the freshwater production will contribute to carbon dioxide emission and consequently global warming. Low grade heat sources such as geothermal energy and waste heat from process plants generate minimal carbon dioxide. This source of energy is generally abundant at a typical temperature around 65-90 ℃ in many localities, and matches perfectly with the MED technology which is driven with a maximum temperature of about 90 ℃. In this paper, we propose a MED design to better harness the low grade thermal energy. By means of a calibrated simulation model, validated with experimental data of single effect freshwater generators, we demonstrate that 25-60% improvement to the freshwater yield compared with conventional MED design is possible.
机译:低级热驱动多效蒸馏(MED)脱盐最近受到了极大的关注。主要原因是许多国家(例如澳大利亚)缺水,而传统的海水淡化技术消耗大量能源。如果所需的能量来自化石燃料,那么淡水生产将导致二氧化碳排放,进而导致全球变暖。低品位热源(例如地热能和加工厂的废热)产生的二氧化碳极少。通常在许多地方的65-90℃左右的典型温度下,这种能量来源都很丰富,并且与MED技术完美匹配,而MED技术的最高温度约为90℃。在本文中,我们提出了MED设计,以更好地利用低等级的热能。通过校准的仿真模型,并用单效淡水发生器的实验数据进行了验证,我们证明与传统的MED设计相比,淡水产量可提高25-60%。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第26期|p.5497-5503|共7页
  • 作者单位

    School of Mechanical and Chemical Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia,Western Australian Ceothermal Centre of Excellence, 35 Stirling Highway, Crawley, WA 6009, Australia;

    School of Mechanical and Chemical Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia,Western Australian Ceothermal Centre of Excellence, 35 Stirling Highway, Crawley, WA 6009, Australia,School of Earth and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Western Australian Ceothermal Centre of Excellence, 35 Stirling Highway, Crawley, WA 6009, Australia,School of Earth and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Queensland Ceothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering, The University of Queensland, QLD 4072, Australia;

    School of Mechanical and Chemical Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia,Western Australian Ceothermal Centre of Excellence, 35 Stirling Highway, Crawley, WA 6009, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    geothermal energy; low grade thermal energy; multi-effect desalination; freshwater yield;

    机译:地热能;低品位热能;多效淡化;淡水产量;

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