摘要
提出一种玄武岩熔体,作为移动式显热储热介质,以满足高储热密度和长时间稳定放热的要求,选用储能密度高达800 MJ/t的新型玄武岩熔体作为移动式模块(TES)的储热介质。用数值模拟方法研究了玄武岩熔体的放热性能,分析了流体和固体在入口空气流速和特征尺寸影响下放热过程中的斜温层行为,给出了相应的放热功率、放热时间和放热效率。结果表明:当初始热量为364.9 MJ,入口空气流速为4 m/s时,玄武岩熔体可提供约0.57 h的18 kW热功率或约1.14 h的10 kW热功率,放热效率超过85%。
A kind of basalt melt was proposed as sensible material for mobile thermal energy storage(TES)to meet the requirements of high heat storage density and stable exothermal performance for a long time,here,a new type of basalt melt with high heat storage density up to 800 MJ/t was selected as the sensible material for mobile TES.The exothermic characteristics of the basalt melt was studied via numerical simulation,the thermocline behavior of fluid and solid under the influence of inlet air velocity and feature size was analyzed,and the corresponding exothermic power,exothermic time and exothermic efficiency were reported.Results show that when the initial heat is 364.9 MJ and the inlet flow velocity is 4 m/s,the basalt melt can provide thermal power of 18 kW for about 0.57 h or 10 kW for about 1.14 h,and the exothermic efficiency is more than 85%.
作者
金懿豪
匡荛
朱慧君
刘光鹏
Jin Yihao;Kuang Rao;Zhu Huijun;Liu Guangpeng(School of Energy and Environment, Southeast University, Nanjing 210096, China;Key Laboratory of Solar Energy Science and Technology in Jiangsu Province, Nanjing 210096, China)
出处
《发电设备》
2021年第6期380-384,390,共6页
Power Equipment
