کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147349 | 1497352 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Energy analysis of a class of copper-chlorine (Cu-Cl) thermochemical cycles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
For separating water into hydrogen and oxygen through intermediate Cu-Cl compounds, the new system configurations for 5-step, 4-step and 3-step thermochemical cycles using electrolysis of CuCl/HCl or CuCl and Brayton cycle are addressed in Aspen Plus® environment. To address the feasible predictions by thermodynamic systems, we found that (i) the pressure and temperature affect the product yields of CuO â CuCl2 and CuCl in the hydrolysis and oxygen production processes; (ii) the internal heat recovery ratio (IHRR) and the feed ratio of H2O/CuCl2 dominate the energy efficiencies and Cl2 production, respectively. Based on the prescribed operating conditions, the comparative evaluations show that the 5-step Cu-Cl cycle using CuCl electrolyzer can ensure the highest energy efficiency while IHRR = 72%, the 3-step Cu-Cl cycle using CuCl electrolyzer can ensure the less equipment and the highest energy efficiency while IHRR = 100%. The 4-step Cu-Cl cycle using CuCl/HCl electrolyzer, where the electrolyzer prevents copper crossovers and safely produces the pure hydrogen gas at low temperature, has a high possibility of commercialization due to the lower grade heat requirement, the less number of equipment and the higher energy efficiency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 25, 22 June 2017, Pages 15990-16002
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 25, 22 June 2017, Pages 15990-16002
نویسندگان
Wei Wu, Han Yu Chen, Jenn-Jiang Hwang,