【摘要】 该文用FLUENT5 4软件对空气 土壤换热器 (SHESS)进行三维动态模拟计算。研究了换热器进出口温度随时间的变化、温度和压力在换热器中的分布。结果表明 ,采用双排管布置 ,可以保证所有管内的流量均匀分布 ;采用压头 15 0Pa的排风扇可以保证管内空气流速在最佳范围之内。空气 土壤换热器在华南地区冬季气温回暖期间对温室有明显的降温效果更多还原

【Abstract】 In this paper,the transient and 3 dimensional heat transfer in an air to earth heat exchanger is calculated by Fluent5.4.Two rows of pipes in the exchanger are set to keep the flow rate uniform in all pipes.A 150Pa ventilator is used to keep the air specd in suitable range.As a result,it can obviously lower the temperature of the greenhouse when the environment temperature goes up to high level in winter.更多还原