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Effect of WBGT on Physiological Cost of Operation for Agricultural Workers in Southern Rajasthan


Affiliations
1 Department of Agricultural Engineering (Farm Machinery and Power Engineering), College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan), India
     

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Heat stress is a condition that is caused by worker over-exposure to the high temperature work environments often found in outdoor agriculture operations. Wet bulb globe temperature (WBGT) is a measure of heat stress especially when it is above 27°C. Considering the range of temperatures prevalent in the Rajasthan state of India during the months of May and June, agricultural operations during these months and the associated heat stress on the agricultural workers, this study was designed to ascertain the effect of WBGT on physiological cost of operation for agricultural workers. Southern Rajasthan was selected to conduct this study. Different WBGT of 28°C, 29°C, 30°C, 31°C and 32°C were selected for this study. The study conducted on twelve farm workers reveals that WBGT induces heat stress on the bodies of workers. The resting, working and delta heart rates and resting and working oxygen consumption rates of workers increased with increase of WBGT from 28°C to 32°C. The resting hear rate, working heart rate and ΔHR was found increasing linearly with wet Bulb globe temperature with higher correlation. Resting and working OCR were also having increasing linear relationship with wet bulb globe temperature.

Keywords

WBGT, Physiological Cost, Operation, Agricultural Workers.
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  • Census, of India (2011). Department Statistics, Published by Govt. of India.

  • Dash, S.K. and Kjellstrom, T. (2011). Workplace heat stress in the context of rising temperature in India, Curr. Sci., 101 (4): 1-8

  • Huguette, M., Mbote, L. and Pierre, D. (2009). Physiological responses to heat strain: A study on personal monitoring for young workers, J. Thermal Biol., 34 : 299–305.

  • Jackson, L. L. and Rosenberg, H. R. (2010). Preventing heat-related illness among agricultural workers, J. Agromedicine, 15 : 200–215.

  • Kenney, W. L., David, W., De, Gischolar_main and Holowatz, L. A. (2004). Extremes of human heat tolerance: life at the precipice of thermoregulatory failure, J. Thermal Biol., 29 : 479–485.

  • Kosakaa, M., Yamanea, M., Ogaia, R., Katoa, T., Ohnishia, N. and Simon, E. (2004). Human body temperature regulation in extremely stressful environment: epidemiology and pathophysiology of heat stroke, J. Thermal. Biol., 29 : 495–501.

  • Mei-Lien, Chen, Chiu-Jung, Chen, Wen-Yu, Yeh, Ju-Wei, Huang and I-Fang, Mao (2003). Heat stress evaluation and worker fatigue in a steel plant. American Indust. Hygiene Assoc. J., 64 (3): 352 -359.

  • Vincent, E. Dimiceli, Steven F. Piltz and Steven, A. (2011). Amburn: Estimation of black globe temperature for calculation of the wet bulb globe temperature index, Proceedings of the World Congress on Engineering and Computer Science, IIN WCECS 2011, October 19-21, 2011, San Francisco, USA.

  • Weather forecasting data published on website of Indian Meteorological Department between January 2008 to December 2008.

  • Ye, Yao, Zhiwei, Lian, Weiwei, Liu and Qi, Shen (2008). Experimental study on physiological responses and thermal comfort under various ambient temperatures, Physiol. & Behav., 93 : 310–321.

  • www.imd.gov.in


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  • Effect of WBGT on Physiological Cost of Operation for Agricultural Workers in Southern Rajasthan

Abstract Views: 531  |  PDF Views: 3

Authors

S. K. Singh
Department of Agricultural Engineering (Farm Machinery and Power Engineering), College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan), India
A. K. Mehta
Department of Agricultural Engineering (Farm Machinery and Power Engineering), College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan), India
S. S. Meena
Department of Agricultural Engineering (Farm Machinery and Power Engineering), College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan), India

Abstract


Heat stress is a condition that is caused by worker over-exposure to the high temperature work environments often found in outdoor agriculture operations. Wet bulb globe temperature (WBGT) is a measure of heat stress especially when it is above 27°C. Considering the range of temperatures prevalent in the Rajasthan state of India during the months of May and June, agricultural operations during these months and the associated heat stress on the agricultural workers, this study was designed to ascertain the effect of WBGT on physiological cost of operation for agricultural workers. Southern Rajasthan was selected to conduct this study. Different WBGT of 28°C, 29°C, 30°C, 31°C and 32°C were selected for this study. The study conducted on twelve farm workers reveals that WBGT induces heat stress on the bodies of workers. The resting, working and delta heart rates and resting and working oxygen consumption rates of workers increased with increase of WBGT from 28°C to 32°C. The resting hear rate, working heart rate and ΔHR was found increasing linearly with wet Bulb globe temperature with higher correlation. Resting and working OCR were also having increasing linear relationship with wet bulb globe temperature.

Keywords


WBGT, Physiological Cost, Operation, Agricultural Workers.

References