热源互补的斯特林加热器设计与数值模拟
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摘要
基于一台100 W级?型斯特林发动机,提出了一种适用于太阳辐射与燃烧加热2种加热方式的加热器结构,其工质流道和集热腔为一体。数值模拟结果表明,在完全利用燃烧加热、完全利用光辐射加热以及光辐射和燃烧供热量为1:1等3种情况下,加热器可以满足热端工质吸收热量大于1 600 W的要求,并且壁面温度分布在合理范围内。本热源互补加热器可以实现系统连续运行,减少燃料消耗。
On the basis of a ?-type small scale Stirling engine, a design of Stirling engine heater which is suitable for two external heat sources, solar energy and combustion, is proposed. The structure intergrates working gas channels into walls of the heater. The numerical simulation results show that, under all the three conditions, only combustion as heating source, only solar energy as heating source and equal heating load of the two heating sources, the above heater can meet the requirement of providing enough heat(>1 600 W) for working gases, and the temperature distribution on the heater's walls is reasonable.
On the basis of a ?-type small scale Stirling engine, a design of Stirling engine heater which is suitable for two external heat sources, solar energy and combustion, is proposed. The structure intergrates working gas channels into walls of the heater. The numerical simulation results show that, under all the three conditions, only combustion as heating source, only solar energy as heating source and equal heating load of the two heating sources, the above heater can meet the requirement of providing enough heat(>1 600 W) for working gases, and the temperature distribution on the heater's walls is reasonable.
引文
[1]金东寒.斯特林发动机技术[M].哈尔滨:哈尔滨工程大学出版社,2009:1-5.JIN Donghan.Technology of Stirling engine[M].Harbin:Harbin Engineering University Press,2009:1-5.
[2]邓十洲,邹隆清,刘洪硕.斯特林发动机[M].长沙:湖南大学出版社,1985:45-49.DENG Shizhou,ZOU Longqing,LIU Hongshuo.Stirling engine[M].Changsha:Hunan University Press,1985:45-49.
[3]李志刚,唐大伟,曾秒,等.废气驱动斯特林机热头设计及流动与传热数值模拟[C]//中国特种发动机工程及应用学术年会论文集.上海,2012:61-63.LI Zhigang,TANG Dawei,ZENG Miao,et al.The heater head design of a Stirling engine driven by exhaust gas and the numerical simulation of the flow and heat transfer[C]//Proceeding of Chinese Special Engine Engineering and Application.Shanghai,2012:61-63.
[4]李铁.碟式聚光太阳能热发电系统用斯特林发动机的研制[D].北京:中国科学院,2011:82-86.LI Tie.Development of a Stirling engine for the dish solar power generation system[D].Beijing:Chinese Academy of Sciences,2011:82-86.
[5]肖蓉.38 k W碟式太阳能斯特林热机腔式吸热器参数设计及热损失模拟[D].湘潭:湖南科技大学,2016:13-16.XIAO Rong.Parameters design and thermostersis simulation for Stirling engine heat cavity receiver of38 k W dish solar power[D].Xiangtan:Hunan University of Science and Technology,2016:13-16.
[6]潘登宇,李琦芬,李卓能,等.基于附壁效应的斯特林机多孔介质加热器传热特性[J].科学技术与工程,2017,17(35):245-250.PAN Dengyu,LI Qifen,LI Zhuoneng,et al.Heat transfer characteristics of Stirling machine porous media heater based on attaching effect[J].Science Technology and Engineering,2017,17(35):245-250.
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[8]毛青松.碟式太阳能热发电系统中腔式吸热器光热性能的数值研究及优化[D].广州:华南理工大学,2012:60-61.MAO Qingsong.Numerical study and optimization of photothermal performance of cavity type heat sink in dish solar thermal power generation system[D].Guangzhou:South China University of Technology,2012:60-61.
[9]汪海贵,朱辰元,薛飞,等.斯特林发动机中天然气扩散燃烧的数值分析[J].舰船科学技术,2005(5):32-37.WANG Haigui,ZHU Chenyuan,XUE Fei,et al.Anumerical study of methane-air flame on Stirling combustor[J].Ship Science and Technology,2005(5):32-37.
[10]于勇.Flunent入门与进阶教程[M].北京:北京理工大学出版社,2008:188-192.YU Yong.Propaedeutic and advanced tutorial for Fluent[M].Beijing:Beijing Institute of Technology Press,2008:188-192.
[11]黄伟.富氧燃烧过程炉内介质辐射传热数值计算[D].武汉:华中科技大学,2012:29-31.HUANG Wei.Modeling of radiative heat transfer in oxy-fuel combustion with non-gray sooting media[D].Wuhan:Huazhong University of Science and Technology,2012:29-31.
[12]王福军.计算流体动力学分析:CFD软件原理与应用[M].北京:清华大学出版社,2004:9-11.WANG Fujun.Computational fluid dynamics analysis:principle and application of CFD[M].Beijing:Tsinghua University Press,2004:9-11.
[12]王磊磊,黄护林.一种太阳能吸热器的结构优化及性能仿真[J].太阳能学报,2012(12):2098-2104.WANG Leilei,HUANG Hulin.Structural optimization and performance simulation of a solar heat sink[J].Journal of Solar Energy,2012(12):2098-2104.
[14]PRAKASH M,KEDARE S B,NAYAK J K.Investigations on heat losses from a solar cavity receiver[J].Solar Energy,2009,83(2):157-170.
[15]SENDHIL K N,REDDY K S.Comparison of receivers for solar dish collector system[J].Energy Conversion and Management,2008,49(4):812-819
[2]邓十洲,邹隆清,刘洪硕.斯特林发动机[M].长沙:湖南大学出版社,1985:45-49.DENG Shizhou,ZOU Longqing,LIU Hongshuo.Stirling engine[M].Changsha:Hunan University Press,1985:45-49.
[3]李志刚,唐大伟,曾秒,等.废气驱动斯特林机热头设计及流动与传热数值模拟[C]//中国特种发动机工程及应用学术年会论文集.上海,2012:61-63.LI Zhigang,TANG Dawei,ZENG Miao,et al.The heater head design of a Stirling engine driven by exhaust gas and the numerical simulation of the flow and heat transfer[C]//Proceeding of Chinese Special Engine Engineering and Application.Shanghai,2012:61-63.
[4]李铁.碟式聚光太阳能热发电系统用斯特林发动机的研制[D].北京:中国科学院,2011:82-86.LI Tie.Development of a Stirling engine for the dish solar power generation system[D].Beijing:Chinese Academy of Sciences,2011:82-86.
[5]肖蓉.38 k W碟式太阳能斯特林热机腔式吸热器参数设计及热损失模拟[D].湘潭:湖南科技大学,2016:13-16.XIAO Rong.Parameters design and thermostersis simulation for Stirling engine heat cavity receiver of38 k W dish solar power[D].Xiangtan:Hunan University of Science and Technology,2016:13-16.
[6]潘登宇,李琦芬,李卓能,等.基于附壁效应的斯特林机多孔介质加热器传热特性[J].科学技术与工程,2017,17(35):245-250.PAN Dengyu,LI Qifen,LI Zhuoneng,et al.Heat transfer characteristics of Stirling machine porous media heater based on attaching effect[J].Science Technology and Engineering,2017,17(35):245-250.
[7]MANCINI T,HELLER P,BUTLER B,et al.Dishstirling systems:an overview of development and status[J].Journal of Solar Energy Engineering,2003,125:135-150
[8]毛青松.碟式太阳能热发电系统中腔式吸热器光热性能的数值研究及优化[D].广州:华南理工大学,2012:60-61.MAO Qingsong.Numerical study and optimization of photothermal performance of cavity type heat sink in dish solar thermal power generation system[D].Guangzhou:South China University of Technology,2012:60-61.
[9]汪海贵,朱辰元,薛飞,等.斯特林发动机中天然气扩散燃烧的数值分析[J].舰船科学技术,2005(5):32-37.WANG Haigui,ZHU Chenyuan,XUE Fei,et al.Anumerical study of methane-air flame on Stirling combustor[J].Ship Science and Technology,2005(5):32-37.
[10]于勇.Flunent入门与进阶教程[M].北京:北京理工大学出版社,2008:188-192.YU Yong.Propaedeutic and advanced tutorial for Fluent[M].Beijing:Beijing Institute of Technology Press,2008:188-192.
[11]黄伟.富氧燃烧过程炉内介质辐射传热数值计算[D].武汉:华中科技大学,2012:29-31.HUANG Wei.Modeling of radiative heat transfer in oxy-fuel combustion with non-gray sooting media[D].Wuhan:Huazhong University of Science and Technology,2012:29-31.
[12]王福军.计算流体动力学分析:CFD软件原理与应用[M].北京:清华大学出版社,2004:9-11.WANG Fujun.Computational fluid dynamics analysis:principle and application of CFD[M].Beijing:Tsinghua University Press,2004:9-11.
[12]王磊磊,黄护林.一种太阳能吸热器的结构优化及性能仿真[J].太阳能学报,2012(12):2098-2104.WANG Leilei,HUANG Hulin.Structural optimization and performance simulation of a solar heat sink[J].Journal of Solar Energy,2012(12):2098-2104.
[14]PRAKASH M,KEDARE S B,NAYAK J K.Investigations on heat losses from a solar cavity receiver[J].Solar Energy,2009,83(2):157-170.
[15]SENDHIL K N,REDDY K S.Comparison of receivers for solar dish collector system[J].Energy Conversion and Management,2008,49(4):812-819