Simulating experiment on heat transfer characteristics of aqueous soil at seepage situation

Taking the aqueous sandy soil in hot summer and warm winter area as a heat transfer medium, studies the influence of seepage on heat transfer characteristics of the soil by a simulating experiment. The results show that seepage affects the temperature distribution around the heat exchanger obviously in both heating and cooling conditions, and the heat transfer effect is improved markedly at seepage situation, while the accumulating effect of heat quantity is significantly weakened. It is suggested that in the regions of aqueous soil with faster seepage velocity, either the tube-wells can be spaced adequately closer or for the same spacing the number of tube-wells and length of tubes can be reduced under the condition of assuring regular heat transfer effect.