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Energy Analysis of Selected Agricultural Engineering Workshop Tasks

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

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008305.(doi:10.13031/2013.29606)
Authors:   Simeon Olatayo Jekayinfa, Ademola Oyejide Adebayo
Keywords:   Energy, bicycle ergonometer, heartrate,tasks

Energy requirements of blacksmithing, welding, filing, hack-sawing and grinding were basically studied in this research. Subjects with four different age groups were calibrated on a bicycle ergonometer in different weather conditions. The subjects were then engaged in the various tasks in turn under similar environmental conditions. Their heart rates were measured and the energy requirements calculated. It was discovered that all the selected tasks studied were high energy demanding and could not be continued for prolonged periods without rest stops. The studies showed that blacksmithing - forging (with long- handled hammer) required 7.76kJ/min, forging (with short-handled hammer) required 8.61kJ/min, fire poking with bellows required 6.60kJ/min, hack-sawing required 6.14kJ/min, welding (in bending posture) 8.45KJ/min, welding (standing posture) 7.14KJ/min and grinding (hand grinder) required 5.90KJ/min. It was shown also that bending posture increases human energy requirements. Lastly, this research supports the fact that hot environments significantly increase the energy requirements of the selected Agricultural workshop tasks.

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