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| THE AIR COOLING EFFECT OF COMPRESSED AIR METHOD IN THE MORE AIR FLOWING TUNNEL |
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Received:September 28, 2010
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| DOI：10.3969/j.issn.1005-7854.2011.02.009 |
| KeyWord:compressed air; expansion cooling; mine ventilation; heat conduction formula |
| Author | Institution |
| DUAN Zai-peng |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming ，China |
| XIE Xian-ping |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming ，China |
| MAO Yan-li |
Coal Industry Administration Bureau of Luoping County in Yunnan Province, Luoping，Yunnan，China |
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| Abstract: |
| The paper first probes into extent of application of using compressed air expansion method to lower the temperature in mine, and then compares with the method of directly using air produced by air compressor to cool mining face .The paper mainly focuses on a section of tunnel to analyze the influence of expansion of air produced by air compressor to temperature in mine. Two different thoughts are used in analysis and heat conduction formula is applied, on which an equation of effect of expansion of air produced by air compressor to air cooling in mine is derived. Lastly, the paper deals with comparison with the method of air cooling and ventilation cooling, economic analysis of expansion cooling，mine ventilationand the actual example are given. |
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