عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq304050202
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Heat and mass transport in porous media with phase change
نام عام مواد
[Thesis]
نام نخستين پديدآور
M. P. Mughal
نام ساير پديدآوران
O. A. Plumb
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
Washington State University
تاریخ نشرو بخش و غیره
1993
مشخصات ظاهری
نام خاص و کميت اثر
148
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Ph.D.
کسي که مدرک را اعطا کرده
Washington State University
امتياز متن
1993
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
In this numerical and experimental study, three problems related to heat and mass transfer in porous media are examined. The first two deal with melting in a packed bed containing a mixture of particles having different melting points. It is demonstrated that through the application of heat, either at the boundaries or internally, a densified zone can be produced. It is also demonstrated that for a one dimensional bed with uniform internal heat generation and convective boundaries, the liquid transport is dominated by capillary forces for low Bond number (Bo = 10 whereas at high Bond number (Bo = 10 the bulk of the liquid pools at the bottom of the bed due to gravity. It is demonstrated that for Biot number larger than 18, the process is internally controlled. Very little liquid transport takes place at high Prandtl numbers (Pr = 27) because of high liquid viscosity. The rate of the process is controlled primarily by the magnitude of the internal heat generation. It is shown that the use of constant thermophysical properties for modeling the problem can result in an error of as much as 13% in the saturation profiles. The third problem is an experimental study of boiling and condensation on porous surfaces similar to those used in heat pipe applications. The study of five different configurations of copper foam metal reveals that the use of channels on the boiler side of the wick enhances the boiler performance by as much as 300% using R11 as a working fluid. A mathematical model was developed to predict the wicking limit of the heat pipe. This model predicted the experimental results with a 12.5% deviation. The model predicts, that, the wicking limit can be increased by a factor of 43 if water is used instead of R11.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Applied sciences
موضوع مستند نشده
Chemical engineering
موضوع مستند نشده
heat transfer
موضوع مستند نشده
Materials science
موضوع مستند نشده
Mechanical engineering
موضوع مستند نشده
Mechanical engineering
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
M. P. Mughal
مستند نام اشخاص تاييد نشده
O. A. Plumb
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
