کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4987738 1455281 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Economic analysis of a combined power and desalination plant considering availability changes due to degradation
ترجمه فارسی عنوان
تجزیه و تحلیل اقتصادی یک گیاه ترکیبی قدرت و آب شیرین کاری با درنظر گرفتن تغییرات موجود در اثر تخریب
کلمات کلیدی
تحلیل اقتصادی، دسترسی، سرعت شکست متفاوت متغیر، سیستم حرارتی، گیاه خنک کننده فلش چند مرحله ای،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
In a conventional economic analysis, the availability of system is considered as a constant value. However, some factors such as increasing components' failure rate due to degradation, reducing failure rates by replacement or repairing, and stops in operation because of overhauls change the availability during the lifetime of a system. Furthermore, due to overhauls and degradation, maintenance costs are not identical in different years. This paper presents a new approach for economic analysis of thermal systems in which change in the availability of system during its lifetime is considered. A combined gas turbine cycle and desalination is studied. The instantaneous availability of system is calculated using state space method with time-varying failure rates and considering overhauls. Then, the average availability of producing electricity and fresh water in each year of lifetime is applied to the economic analysis. In addition, maintenance costs are calculated according to the overhauls and the number of components repairs in each year. Finally, some economic indicators are compared in two cases of variable and constant availability, using the life cycle cost analysis method. Considering time-varying availability, increase in payback period is observed by 9 months and reduction in net present value by about $18 million.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 414, 15 July 2017, Pages 1-9
نویسندگان
, , ,