【摘要】 以三维非稳态固体导热模型和一维流体传热模型为基础,采用有限差分法,建立了考虑管间传热影响的多管地道降温传热模型,并通过与实测数据的比较,验证了其正确性。采用修正温度简化了多管地道降温算法。分析了管数、埋管深度和管间距对地道降温效果的影响。更多还原

【Abstract】 Based on a 3-D unsteady heat conducting mode and a 1-D liquid heat transfer mode,establishes heat transfer mode of multi-tube earth-air tunnel by using finite difference method.Verifies the correctness of this mode by comparison between simulated data and test data.Develops a simplified method with a modified temperature.Analyses the influences of tube number,depth of buried tube and tube spacing on cooling potential of multi-tube earth-air tunnels.更多还原