Abstract
Experimental research on airflow patterns and thermal comfort in livestock buildings require the development of an on-line multi-point computerized system for environmental measurements. The characteristics, development and tests of such equipment are described in this article. The system was based on a laptop, a data acquisition card with 16 input channels and a set of air temperature, air velocity and differential pressure sensors. Sensors were resistance temperature detectors for temperature and air velocity measurements. The accuracy of the computerized sensing system after calibration was, for air velocity measurements, 0.05 m s–1 in the range of 0.1 to 1.5 m s–1, and from 0.03 to 0.14 m s–1 in the range of 1.5 to 7 m s–1; 0.2°C for air temperature measurements; and 5 Pa for pressure measurements. The system has been used in several research studies in commercial poultry buildings and the developed system has been proven to be robust and stable.
Highlights
Heat stress during the summer can cause significant economic losses in poultry housing
The system was based on a laptop, a data acquisition card and a set of air temperature, air velocity and differential pressure sensors
A field test of the developed system was carried out in which air velocity, temperature and differential pressure were measured in a commercial poultry house under practical conditions
Summary
Heat stress during the summer can cause significant economic losses in poultry housing. Intensive poultry buildings in hot weather areas of Europe and USA, are usually provided with environmental control facilities, including: temperature, humidity and pressure variation sensors, controllers and.
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