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首页> 外文期刊>Desalination: The International Journal on the Science and Technology of Desalting and Water Purification >Thermo-economic analysis of low-grade heat driven multi-effect distillation based desalination processes
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Thermo-economic analysis of low-grade heat driven multi-effect distillation based desalination processes

机译：低级热驱动多效蒸馏基脱盐过程的热经济分析

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摘要

We examine the economic viability of three multi-effect distillation (MED) based processes against the MED as a benchmark, when they are driven by low grade heat. We model and compare the Boosted MED (BMED), Flash Boosted MED (FBMED) and Distributed Boosted MED (DBMED) processes with the MED in terms of waste heat performance ratio, specific capex and opex. All three new configurations generate significantly higher productions than MED with higher capex and opex investment. We provide the corresponding cash-flow analyses using such financial metrics as the Net Present Value (NPV) and Internal Rate of Return (IRR). This study leads to the conclusion that the DBMED process is the superior scenario up to an interest rate of 12.5% at 65 degrees C heat source supply temperature which then drops to 8.4% at 90 degrees C heat source supply temperature. Also, the analysis shows for the high interest rates (above 8.4% at 90 degrees C), MED has higher NPV compared to other MED based processes.
机译：当它们由低等级的热量驱动时，我们将三种多效蒸馏（Med）基于MED作为基准的经济可行性。 我们模拟并比较增强的Med（BMED），闪光升降机（FBMED）和分布式增压MED（DBMED）过程，以便在废热性能比，特定的支出和OPEX方面。 所有三种新配置都会产生比具有更高的CAPEX和OPEX投资的MED显着更高的产品。 我们使用此类金融指标提供相应的现金流分析，作为净目前价值（NPV）和内部返回率（IRR）。 该研究导致结论是，DBMED过程的卓越情景在65摄氏度的热源供应温度下的卓越程度上为12.5％，然后在90摄氏度下降到8.4％。 此外，分析显示高利率（90摄氏度高于8.4％），与其他基于MED的过程相比，MED具有更高的NPV。

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