دانلود مقاله ISI انگلیسی شماره 66682
ترجمه فارسی عنوان مقاله

برآورد شدت تابش آسمان شبانه در ارتفاعات نگوه، اسرائیل

عنوان انگلیسی
Estimates of clear night sky emissivity in the Negev Highlands, Israel
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
66682 2004 13 صفحه PDF
منبع

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

Journal : Energy Conversion and Management, Volume 45, Issues 11–12, July 2004, Pages 1831–1843

ترجمه کلمات کلیدی
مناطق خشک گرم، تابش اشعه ایکس، نرخ تبخیر آب
کلمات کلیدی انگلیسی
Hot arid regions; Sky emissivity; Water evaporation rate

چکیده انگلیسی

A simple method was introduced to estimate the atmospheric emissivity of clear night skies based on the water temperature variation inside an open shallow pond. The method used the pond as an absorber of atmospheric radiation by measuring the water evaporation rate from the pond to ambient air and then calculating the heat loss inside the pond due to the radiative heat exchange between the pond and sky dome. An empirical correlation for the calculations of clear night sky emissivity in the Negev Highlands, Israel, was found. It showed that the emissivity of clear night sky in the Negev Highlands is slightly lower than that expected by Berdahl et al. and Clark's correlations under the climatic conditions during the period of measurements.