Energy and exergy utilization in agricultural sector of Saudi Arabia |
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| Affiliation: | 1. School of Manufacturing Engineering, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ont., Canada L1H 7K4;2. Department of Mechanical Engineering, KFUPM, Box 127, Dhahran 31261, Saudi Arabia;1. College of Agronomy and Biotechnology, China Agricultural University, 100193 Beijing, PR China;2. National Energy R&D Center for Non-Food Biomass, 100193 Beijing, PR China;3. The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel;1. University of Innsbruck, Institute for Construction and Materials Science, Innsbruck, Austria;2. King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia |
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| Abstract: | This paper presents an analysis of energy and exergy utilization in the agricultural sector of Saudi Arabia by considering the sectoral energy and exergy flows for a period of 12 years between 1990 and 2001. Energy and exergy analyses are conducted for its two essential devices, namely tractors and pumps, and hence the sectoral energy and exergy efficiencies are obtained for comparison for a period of 12 years. Two main energy sources are diesel for tractors and electricity for pumps in the sector. It is found that the overall exergy efficiencies in this sector are slightly less than the corresponding energy efficiencies, e.g. 74.19–69.20% for exergy efficiency and 74.94–74.60% for energy efficiency from 1990 to 2001. The present technique is proposed as a useful tool in sectoral analysis of energy and exergy utilization, developing energy policies and providing energy conservation measures. |
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