کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
649233 1457204 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal pressure drop ratio for micro recuperators in small sized gas turbines
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Optimal pressure drop ratio for micro recuperators in small sized gas turbines
چکیده انگلیسی

Heat recuperation is often used to improve the overall cycle efficiency of standard gas turbines. Hereby a high heat exchanger effectiveness and low pressure drops are favourable to achieve maximal cycle efficiency. Finding a compromise between these conflicting requirements is the main challenge in recuperator design. In this paper it is shown that the optimal cold and hot side pressure drops of a micro recuperator are uniquely correlated when integrated in a gas turbine. For an optimized microchannel recuperator, the ratio of the cold side pressure drop over the hot side one is only a function of gas turbine properties and primarily depends on the compressor pressure ratio. Based on these findings, a simplified optimization procedure is applied to design a micro recuperator in a 1.5 kW gas turbine. It is shown that the results of this optimization are almost identical to the full multi-dimensional optimization with an accuracy of approximately 1% on geometrical parameters and an excellent agreement for cycle efficiency.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 28, Issues 17–18, December 2008, Pages 2353–2359
نویسندگان
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