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首页> 外文期刊>Energy Conversion & Management >Operation analysis, response and performance evaluation of a pulsating heat pipe for low temperature heat recovery
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Operation analysis, response and performance evaluation of a pulsating heat pipe for low temperature heat recovery

机译：低温热回收脉动热管的操作分析，响应和性能评价

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摘要

In the present work, a series of tests were designed and conducted aiming at investigating the thermal response and performance of a pulsating heat pipe operating with graphene-water ethylene glycol nano-suspension. The heat pipe was tested at various applied heat values between 10 and 100 W, concentrations of 0.1 g/l to 2 g/l of graphene nanoplatelets dispersed in water-ethylene glycol, different filling ratios, and condenser temperatures. Thermal conductivity and viscosity of the nano-suspensions were experimentally measured at various concentrations. A response surface methodology model was developed to optimize the thermal performance of the heat pipe by minimizing the thermal resistance of the system. Results showed that the thermal resistance value decreases by increasing the concentration of the graphene nanoplatelets and also by increasing the heat load to the evaporator. Likewise, filling ratio and temperature of the condenser were found to have a complementary effect on the optimization of the performance of the heat pipe such that the minimum thermal resistance value of 0.36 K/W was obtained at 85 W and condenser temperature of 23 degrees C, filling ratio of 0.35 and concentration of 2 g/l. It was identified that the presence of the graphene nanoplatelets contributes to the promotion of heat transfer mechanisms due to the intensification in micro-scale phenomena such as Brownian motion and thermophoresis effect. Using nonlinear regression analysis, a correlation was developed to predict the thermal resistance value of the system with an accuracy of 8.7%.
机译：在本作本作中，设计了一系列测试，并考虑了研究与石墨烯 - 水乙二醇纳米悬浮液操作的脉动热管的热响应和性能。在10-100W的各种施加的热值中测试热管，0.1g / L至2g / L的石墨烯纳米孔，分散在水 - 乙二醇，不同的灌浆比和冷凝器温度。在各种浓度下实验测量纳米悬浮液的导热率和粘度。开发了一种响应面方法模型，以通过最小化系统的热阻来优化热管的热性能。结果表明，通过增加石墨烯纳米孔的浓度以及将热负荷增加到蒸发器的热负荷也降低了热阻值。同样地，发现冷凝器的填充率和温度对热管的性能的优化具有互补效果，使得在85W和冷凝体温度为23摄氏度下获得0.36k / w的最小热阻值，填充比为0.35，浓度为2克/升。鉴定出石墨烯纳米纳米片的存在由于褐色运动和热量效应等微尺度现象的增强，有助于促进传热机制。使用非线性回归分析，开发了一种相关性以预测系统的热阻值，精度为<8.7％。

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  • 来源
    《Energy Conversion & Management》 |2020年第10期|113230.1-113230.15|共15页
  • 作者

    Li Zhixiong; Sarafraz M. M.; Mazinani Arash; Moria Hazim; Tlili Iskander; Alkanhal Tawfeeq Abdullah; Goodarzi Marjan; Safaei Mohammad Reza;

  • 作者单位

    Minjiang Univ Fujian Univ Marine Intelligent Ship Equipment Engn Res Ctr Fuzhou 350108 Peoples R China|Univ Wollongong Sch Mech Mat Mechatron & Biomed Engn Wollongong NSW 2522 Australia;

    Deakin Univ Sch Engn Waurn Ponds Vic Australia;

    Univ Adelaide Sch Chem Engn & Adv Mat Adelaide SA 5005 Australia;

    Yanbu Ind Coll Dept Mech Engn Technol Yanbu Al Sinaiyah City 41912 Saudi Arabia;

    Majmaah Univ Dept Mech & Ind Engn Coll Engn Al Majmaah 11952 Saudi Arabia;

    Majmaah Univ Coll Engn Dept Mechatron & Syst Engn Al Majmaah 11952 Saudi Arabia;

    Ton Duc Thang Univ Fac Environm & Labour Safety Sustainable Management Nat Resources & Environm R Ho Chi Minh City Vietnam;

    Duy Tan Univ Inst Res & Dev Da Nang 550000 Vietnam|Duy Tan Univ Fac Elect Elect Engn Da Nang 550000 Vietnam|King Abdulaziz Univ Fac Sci Dept Math NAAM Res Grp POB 80259 Jeddah Saudi Arabia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pulsating heat pipe; Evaporator; Thermal resistance; Nano-suspension; Water-ethylene glycol;

    机译：脉动热管;蒸发器;热阻;纳米悬浮液;水 - 乙二醇;

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