THE THERMAL GRADIENT AND COMPACTION EFFECTS ON HEAT AND WATER MOVEMENT IN SOME SOILS OF EGYPT | ||||
| Nuclear Sciences Scientific Journal | ||||
| Article 11, Volume 1, Issue 1, 2012, Page 147-154 PDF (456.88 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/nssj.2012.31025 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| AِLI MASHOUR1; MOHAMED E. E. AL- SHOBAKI2 | ||||
| 1Soils and Water Dep., Fac. of Agric., Al-Azhar University | ||||
| 2Nuclear Materials Authority,Cairo, Egypt | ||||
| Abstract | ||||
| Two laboratory experiments were conducted at the Soil Lab., Fac. of Agric., Al-Azhar Univ. The first experiment was conducted to evaluate the effect of thermal gradient for different soil samples varied in their texture and moisture content on heat energy and water movement. The second experiment was conducted to evaluate the effect of compaction on heat transfer in sandy clay loam soil. To achieve these purposes, different soil columns were prepared to measure soil temperature and moisture content for the abovementioned treatments.The obtained results of the first experiment showed that the increase in total heat energy (Ht) and heat content (Hs) of soil was a proportional value to the increase in thermal gradient. The higher values of Ht and Hs were noticed for sandy clay loam. The net movement of moisture increase by about 110 % by increasing thermal gradient from dt1 to dt2. The heat energy consumed in moisture movement (Hc) has been saved with increasing both heat gradient and moisture content values. In other words, the results of the second experiment showed that heat transfer was affected by compaction, where the thermal conductivity of soil increased due to bulk density increasing. | ||||
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