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现行 3840(RP-707)
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Ice-Melting and Melt Water Discharge Temperature Characteristics of Packed Ice Beds for Rectangular Storage Tanks 矩形储罐填充冰床的融冰和融水排放温度特性
对矩形储罐中多孔冰床的融化行为进行了实验研究。冰和储槽的特点是槽的尺寸、冰粒几何形状、冰库的几何形状、初始水位和进水分布。进水分布从水箱上方开始,通过一个或多个单独的矩形开口,在冰上方,小于水箱的平面面积,或通过与水箱平面面积相同尺寸的入口进行近似均匀的进水分布。 出水口位于水箱底部周边。使用实验室规模的冷热电储能罐,通过改变进水温度、进水流速、进水分布和冰库几何形状来确定对出水温度的影响。研究结果表明,通过在水箱平面区域内使用均匀的进水分配,可以实现接近0摄氏度(32华氏度)的近似恒定出水温度。均匀的进水分布产生几乎恒定的传热和结冰- 在储槽中冰融化的整个过程中,融化速率仅随出水温度的小幅升高而增大。关键词:1995年,冰,融化,特性,冰储能,储能,实验,制冰机,尺寸,设计,矩形,水箱,几何形状,水温,热流引用:ASHRAE Trans。1995年,第101卷,第一部分,论文编号3840,79-89,图11。,6个标签。,参考文献5。
An experimental study was performed to model the melting behaviour of a porous bed of ice in a rectangular storage tank. The ice and the storage tank were characterised by the dimensions of the tank, the ice particle geometry, the geometry of the ice store, the initial water level, and the inlet water distribution. Inlet water distributions were from above the tank, through either one or more individual rectangular openings, above the ice and smaller than the plan area of the tank, or by a nearly uniform distribution of inlet water through an inlet of the same dimensions as the tank plan area. The water outlet was located along the perimeter along the bottom of the tank. Using a laboratory-scale cool thermal energy storage tank, the effect on outlet water temperature was determined by varying the inlet water temperature, the inlet flow rate, the inlet water distribution, and the ice store geometry. The results of the study indicate that an approximately constant outlet water temperature near 0degC (32degF) is achieved by using a uniform inlet water distribution over the plan area of the tank. The uniform inlet water distribution yields a nearly constant heat transfer and ice-melting rate throughout the period of ice melt in the storage tank, with only a small increase in the outlet water temperature.KEYWORDS: year 1995, ice, melting, properties, ice storage, energy storage, experiment, ice makers, sizing, designing, rectangular, tanks, geometry, water temperature, heat flow
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