流体机械

2014, v.42;No.506(08) 78-83

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固体蓄热装置的蓄、放热特性数值模拟分析
Solid Heat Storage Device Storage and Heat Release Characteristics of the Numerical Simulation Analysis

胡思科;邢姣娇;
HU Si-ke;XING Jiao-jiao;Northeast Dianli University;

摘要(Abstract):

作为在能源开发与利用中起到"削峰填谷"或"间歇调节"作用的固体蓄热技术,现在各领域中得到了一定程度的应用。与以往研究所采取的蓄热介质、分析方法和建立的物理模型不同,本文以氧化镁固体作为蓄热体,并在其中分别开设不同组数的圆形孔道为例,利用峰值电加热使其达到稳态时所需要的时间,以及在放热过程中以空气作为热能传输介质,在其流经不同孔道中不同位置、不同时刻所进行的温度、流速、热流量和不同模型的串并联组合的数值计算与研究。为其在更广泛的领域得到科学合理的应用提供了必要的理论依据。
Heat Storage technology which plays the role of"lowering the peak and cramming the valley"and"regulating intermittently"in energy development and utilization has been applied to varying degrees in all areas now. Unlike the Heat storage medium,analysis methods and Physical model in the past research,this paper develops with the respect of adopting solid Magnesia as the Heat storage media,in which a different number of groups of round pore canals are taken as the example for analysis. The time needed in the heat storage process when the heat storage media reaches the steady state is recorded. With air as the heat transmitting media during the discharging process,when air flows through different locations,the temperature,the velocity,the heat and series parallel combination of different models at every spot are kept for analysis record as well as the average parameter value. The numerical calculation with regard to the data mentioned is to be studied. It provides the necessary theoretical basis to scientific application in wider areas.

关键词(KeyWords): 蓄热技术;氧化镁固体;物理模型;数值计算
heat storage technology;solid MgO;physical model;numerical calculation

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作者(Author): 胡思科;邢姣娇;
HU Si-ke;XING Jiao-jiao;Northeast Dianli University;

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