دانلود مقاله ISI انگلیسی شماره 24573
ترجمه فارسی عنوان مقاله

مطالعه اثر موقعیت منبع حرارتی در یک اتاق دارای تهویه با استفاده از تجزیه و تحلیل رگرسیون چندگانه

عنوان انگلیسی
A study of the effect of heat source location in a ventilated room using multiple regression analysis
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
24573 2007 11 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Building and Environment, Volume 42, Issue 5, May 2007, Pages 2072–2082

ترجمه کلمات کلیدی
محل منبع حرارت - پلوم - مخلوط کردن تهویه - سرعت اتاق - تجزیه و تحلیل رگرسیون چندگانه -
کلمات کلیدی انگلیسی
Heat source locations, Plumes, Mixing ventilation, Room velocity, Multiple regression analysis,
پیش نمایش مقاله
پیش نمایش مقاله  مطالعه اثر موقعیت منبع حرارتی در یک اتاق دارای تهویه با استفاده از تجزیه و تحلیل رگرسیون چندگانه

چکیده انگلیسی

Multiple regression analysis is a statistical technique which allows to predict a dependent variable from more than one independent variable and also to determine influential independent variables. Using experimental data, in this study the multiple regression analysis is applied to predict the room mean velocity and determine the most influencing parameters on the velocity. More than 120 experiments for four different heat source locations were carried out in a test chamber with a high level wall mounted air supply terminal at air change rates 3–6 ach. The influence of the environmental parameters such as supply air momentum, room heat load, Archimedes number and local temperature ratio, were examined by two methods: a simple regression analysis incorporated into scatter matrix plots and multiple stepwise regression analysis. It is concluded that, when a heat source is located along the jet centre line, the supply momentum mainly influences the room mean velocity regardless of the plume strength. However, when the heat source is located outside the jet region, the local temperature ratio (the inverse of the local heat removal effectiveness) is a major influencing parameter.