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STUDY OF INTERNAL CLIMATE OF NATURALLY AND MECHANICALLY VENTILATED BROILER HOUSES

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  034060,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13871) @2003
Authors:   In-Bok Lee, Byoeng-Ki You, Kyu-Hong Choi, Jong-Gil Jeun, Gyeong-Won Kim
Keywords:   Broiler house, Environment, Mechanical ventilation, Natural ventilation

Most of broiler houses in Korea have the trouble of environmental control such as suitability, stability, and uniformity of internal climate, resulting in serious stress on chickens. Accordingly, it is very urgent to develop optimum designs of naturally and mechanically ventilated broiler houses for Korean climate. However, there is very limited data and information of internal climate of the broiler houses to be used for the study of structural as well as ventilation design. Even though the typical length of the broiler houses was 75-100m with 12m of width, most of field experiments were conducted with very limited measurement points or smaller scaled models. In this study, the internal climates such as air temperature, humidity, dust, ammonia gas, and air velocity were measured at naturally and mechanically ventilated broiler houses. Those data were collected during summer, fall, and winter seasons with local weather data. It was found that the difference between measured and optimum air temperatures was 14.0 C in maximum during the summer time. The daily maximum range of internal averaged air temperature was found 12.8 C while the uniformity of thermal condition was 20.7 C in maximum. The detail information of relative humidity, dust, NH3, and air velocity measured at the broiler houses will be introduced later.

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