流体机械

2021, v.49;No.590(08) 48-56

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风力驱动管式致热器流体循环制热性能研究
Study on fluid circulation heating performance of piping-type heater driven by wind turbine

丁兴江;章学来;陆定宇;徐笑锋;刘伟;王绪哲;
DING Xingjiang;ZHANG Xuelai;LU Dingyu;XU Xiaofeng;LIU Wei;WANG Xuzhe;Shanghai Maritime University;

摘要(Abstract):

为了将风能高效转换为热能,提出了一种新型风力驱动管式致热器,流体在管式致热器中循环流动,利用风能直接制热,致热器可兼有储能功能。通过理论分析推导出管式致热器的制热功率计算公式,利用实验关联式对工质进行不同工况分析,得到致热器在工质流经壳程外掠横管工况时热流密度及制热功率最大,每单位工质质量流量所对应的热流密度约为8.56 W/m~2,制热功率约为420.14 W/m~3,大约是工质流经管程准稳态湍流工况时的4倍。为提高系统热效率,在制热与传热两个环节,重点应提升其单位体积制热量或制热的单位面积热流密度值,工质之间传热所需表面积远低于制热所需值。
In order to efficiently convert wind energy into heat energy directly,a new type of piping-type heater driven by wind turbine was proposed.The fluid circulates in the heater and produce heat using wind energy,meanwhile,the heater can have energy storage function at the same time.Through theoretical analysis,the calculation formula for heating power of piping-type heater was derived.The experimental correlation was used to analyze different working conditions of the working medium and it was concluded that the heat flux and heating power are the highest when the working fluid flows through the shell side and sweeps the pipe surface.The heat flux corresponding to unit mass flow of the working medium is 8.56 W/m~2,and the heating power is 420.14 W/m~3,which is about 4 times of the steady state turbulence condition when the working medium flows through the pipe.In order to improve the thermal efficiency of the heater,the key point is to increase the heat flux per unit area or heating power per unit volume in the links of heating and heat transfer.The surface area for heat transfer required between the working media is much smaller than that for heating.

关键词(KeyWords): 致热器;流体循环;制热功率;热流密度;风力机
heater;fluid circulation;heating power;heat flux;wind turbine

Abstract:

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基金项目(Foundation): 国家重点研发计划重点专项项目(2018YFD0401300);; 上海市科委资助项目(16040501600)

作者(Author): 丁兴江;章学来;陆定宇;徐笑锋;刘伟;王绪哲;
DING Xingjiang;ZHANG Xuelai;LU Dingyu;XU Xiaofeng;LIU Wei;WANG Xuzhe;Shanghai Maritime University;

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