کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6696692 | 1428349 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Indoor environment evaluation of a Dedicated Outdoor Air System with ceiling fans in the tropics - A thermal manikin study
ترجمه فارسی عنوان
ارزیابی محدوده محیط داخلی یک سیستم هوایی اختصاصی با هوای سقفی در مناطق گرمسیری - مطالعه منیکینای حرارتی
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کلمات کلیدی
سیستم هوای فضای باز اختصاصی با طرفداران سقف، جنبش هوا، مانکن حرارتی، محیط داخلی آب و هوای گرم و مرطوب،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Energy savings of the Air-Conditioning (AC) system is crucial in achieving energy conservation in buildings in the tropical region. A Dedicated Outdoor Air System with ceiling fans (DOAS-CF) aims to achieve energy savings arising from elevated room air temperature and minimizing the air-conditioning requirements. The objective of this study is to investigate the cooling effect produced by the DOAS-CF system at various locations in an AC room using a thermal manikin. The sedentary thermal manikin was set at three different locations such as under the ceiling fan, outside the fan blades and the center of the room at temperatures of 24â¯Â°C, 27â¯Â°C and 30â¯Â°C and at 60%RH with air velocities ranging from 0.02â¯m/s to 2.26â¯m/s at the height of 1.1â¯m. Two ceiling fans formed circulation airflows around each fan. High air speeds and low turbulence intensity were measured right under the ceiling fan and near the floor while low air speeds and high turbulence intensity were found at other locations. The cooling effect at the whole body of â3.3â¯Â°C was higher under the fan than that of â1.3â¯Â°C at other locations. The cooling effect was affected by temperature, location and fan speed mode significantly. The maximum cooling effect by manikin based equivalent temperature was higher than that by SET model due to an evaluation of the local cooling effect on each body part. The knowledge of the cooling effect is important and useful for a mechanical engineer to design the thermal environment produced by the DOAS-CF system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Building and Environment - Volume 143, 1 October 2018, Pages 605-617
Journal: Building and Environment - Volume 143, 1 October 2018, Pages 605-617
نویسندگان
Kuniaki Mihara, Bertrand Lasternas, Yuichi Takemasa, Kwok Wai Tham, Chandra Sekhar,