Nonlinear Thermal Analysis of Solar Air Heater for the Purpose of Energy Saving

  • سال انتشار: 1391
  • محل انتشار: فصلنامه انرژی و محیط زیست ایران (ایرانیکا)، دوره: 3، شماره: 4
  • کد COI اختصاصی: JR_IJEE-3-4_011
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 929
دانلود فایل این مقاله

نویسندگان

m Gorji

Mechanical Engineering Faculty, Babol Noshirvani University of Technology, Babol, Iran

m hatami

Mechanical Engineering Faculty, Babol Noshirvani University of Technology, Babol, Iran

a hasanpour

Mechanical Engineering Faculty, Babol Noshirvani University of Technology, Babol, Iran

d.d ganji

Mechanical Engineering Faculty, Babol Noshirvani University of Technology, Babol, Iran

چکیده

In this article, nonlinear thermal Analysis of air-heating flat-plate solar collectors was conducted to obtain temperature distribution inside the heat transfer unit. Due to temperature-dependency of specific heatcoefficient of air, the governing differential equation had a noticeable nonlinear nature. Therefore, for thesolution of nonlinear equation a highly accurate and simple analytical method which is called Differential Transformation Method (DTM) and basic numerical method, Runge-Kutta (RG) was employed. As a significant result, it is depicted that the DTM results have an interesting conformity with numerical ones. After thisverification, the effects of physical applicable parameters on temperature distribution, useful gained heat andthermal efficiency of collectors were investigated. It was concluded that increase in dimension of collector may not increase the efficiency (about 10% decreased). However an increase in the effectiveness coefficient ( ) and air mass flow rate ( ) enhanced the performance of solar collectors and the process efficiency increased up to 12%.

کلیدواژه ها

Air-heater /Differential Transformation Method /Temperature Dependent Parameter /Thermal Efficiency /Solar Collector

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.