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Experimental Research of the radiator Thermal Performance Test Equipment and Its Application in Heating System

Energy Engineering 2021年第2期118卷 399-410页

作者： Lian Zhang Linjun Fan Xin Xu Baowen Cao Heng Zhang Lihong Song Basic Experimental and Training Center Tianjin Sino-German University of Applied SciencesTianjin300350China College of Mechanical Engineering Tianjin University of Science and TechnologyTianjin300222China Tianjin Qicheng Science and Technology Co. Ltd.Tianjin300193China Software and Communication School Tianjin Sino-German University of Applied SciencesTianjin300350China School of Energy Engineering Tianjin Sino-German University of Applied SciencesTianjin300350China

radiator thermal performance test equipment plays a key role in the processing of developing a new type of heat radiator and its application *** precise of temperature controlling,temperature measuring andflow measuring are the vital factors for a radiator thermal performance test *** on the above back-ground,this paper improves the measurement and control system of radiator thermal performance test equip-ment,which improves the accuracy of the radiator thermal performance test *** paper also optimizes the software and hardware system simultaneously so as to improve the precision of the auto-test system of test *** rate ranges from 175 kg/h to 178 kg/h under different *** average is 176.5 kg/h and the deviation rates are from 1.62%to 1.97%.The heat produced under various conditions is *** maximum is 4.3 kW and the minimum is 4.2 kW for condition 1,the maximum is 3.3 kW and the minimum is 3.2 kW for condition 2 and the maximum is 1.95 kW and the minimum is 1.89 kW for condition ***,the deviation rate is about 2.9%,which shows that the device has high stability and high *** paper studies a new electronic heat cost allocate meter test method by radiator thermal performance test equipment at the same *** paper tests temperature changes through four measures points and gets a result appeared as a heat backup which should be avoided when using in the test of electronic heat cost allocate *** experiences and references could be gained for further research in the heating system from this test and research.

关键词： Electronic heat cost allocate meter radiator precise control heating

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Preparation of composite aluminum automobile radiator by inversion casting

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中国有色金属学会会刊：英文版 2001年第1期11卷 138-140页

作者：李娜陈彦博孟宪云赵宏亮温景林东北大学材料冶金学院辽宁沈阳 110015 东北大学材料冶金学院辽宁沈阳 110006

The inversion casting technics of producing three ply Al Mn/Al Si composite strap used in automobile radiator was studied. The physical processes of inversion casting, including the flux supporting reacting and volatilizing at high temperature, the melting and solidification when the elements of solid and liquid fresh alloys meet with each other, the mutual diffusion of elements in solid and liquid, the crystallization and forming of metallurgical combination and the following rolling process, were analyzed. At the same time, the composite mechanism of this technique was also discussed. [

关键词： composite aluminum alloy inversion casting automobile radiator composite mechanism

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radiator Vibration Fatigue Analysis

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Journal of Electronics Cooling and Thermal Control 2017年第1期7卷 8-21页

作者： Toure Ismael Buyun Sheng Department of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan China

This paper is the second step of our work. The first step presents a set of parametric studies performed on automotive radiators by designing different heat exchanger models. The analysis focuses on the cooling performance for automobile radiator by changing several dimensions of the radiator fin phase (P2.5, P2.4, P2.3, P2.2, and P2.1) as well as the importance of coolant flow lay-out on the radiator global performance [1]. The second step consists on the study of the vibration fatigue of the sample with the best heat dissipation performance we design (radiator P2.1). We use Hyper Mesh to proceed with the finite element model. Frequency response analysis is solved by using MSC. Nastran (MSC. MD. Nastran. v2010.1.3-MAGNiTUDE), fatigue durability ana-lysis by using MSC Fatigue. In this experiment, the frequency response of the unit load (the unit load is 1 g) is analyzed. Based on the analysis of the frequency response of the unit load, the fatigue life of the radiator is analyzed by the PSD (power spectral density) curve and the S-N curve. From our experiments results, we observe that the radiator we design meets the international requirements of fatigue vibration under automobile normal working condition.

关键词： Automobile radiator radiator Fin S-N and PSD (Power Spectral Density) Curve Fatigue Durability Frequency Response

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Carbon Black and Multi Wall Carbon Nanotubes Loaded Polyurethane Foam Composite Flexible Thermal radiator

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Journal of Materials Science and Chemical Engineering 2015年第7期3卷 119-126页

作者： R. Wijesiriwardana ReliSen Bentonville USA

Carbon black (CB) or multi walled carbon nanotubes (MWCNT) loaded polyurethane conductive foams are used as heaters, electrodes, radar absorbers and shielding. This paper discusses the performance of an innovative flexible thermal radiator (FTR) constructed with CB filled or MWCNT filled conductive foam and powering electrode structure constructed with textiles manufacturing process (knitting, weaving or nonwoven). Silver (Ag) yarns are used for the powering electrodes construction. This paper discusses the construction, electro-thermal analysis, performance and applications of FTR. Also this paper compare the thermal and electrical characteristics of CB filled and MWCNT filled FTRs. The electro-thermal model is simulated by using finite element methods.

关键词： Carbon Black (CB) Multi Walled Carbon Nanotubes (MWCNT) Flexible Thermal radiator (FTR) Ag Yarns Knitting Electro-Thermal FEM Conductive Foam Weaving and Nonwoven

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CFD Analysis and Optimization of Automobile radiator based on STAR-CCM+

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International Journal of Plant Engineering and Management 2017年第4期22卷 212-221页

作者： XU Xiao-wen SUN Hou-huan HUA Guang-sheng YIN Zhen-hua School of Mechanical and Power Engineering Nanjing Tech University China National Accreditation Service for Conformity Assessment

This research talks about the radiator cooling system of the automobile engine,the radiator’ s fluidstructure interaction dynamics based on computational fluid dynamics( CFD) STAR-CCM+ software. The linear regression model of coolant determined by MATLAB software was imported into the user-defined field function of the software,using the standard K-Epsilon turbulence model to analyze temperature,pressure and velocity changes of the coolant in the radiator channel. In order to improve the efficiency of the radiator,it is necessary to analyze the structure of two kinds of heat sinks,and get better heat transfer effect.

关键词： computational fluid dynamics(CFD) linear regression analysis radiator STAR-CCM+

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Numerical Study on Application of CuO-Water Nanofluid in Automotive Diesel Engine radiator

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Modern Mechanical Engineering 2012年第4期2卷 130-136页

作者： Navid Bozorgan Komalangan Krishnakumar Nariman Bozorgan Department of Mechanical Engineering Abadan Branch Islamic Azad University Abadan Iran Department of Mechanical Engineering College of Engineering Trivandrum India

Application of CuO-water nanofluid with size of the nanoparticles of 20 nm and volume concentrations up 2% is numerically investigated in a radiator of Chevrolet Suburban diesel engine under turbulent flow conditions. The heat transfer relations between airflow and nanofluid coolant have been obtained to evaluate local convective and overall heat transfer coefficients and also pumping power for nanofluid flowing in the radiator with a given heat exchange capacity. In the present study, the effects of the automotive speed and Reynolds number of the nanofluid in the different volume concentrations on the radiator performance are also investigated. The results show that for CuO-water nanofluid at 2% volume concentration circulating through the flat tubes with Renf = 6000 while the automotive speed is 70 km/hr, the overall heat transfer coefficient and pumping power are approximately 10% and 23.8% more than that of base fluid for given conditions, respectively.

关键词： Automotive Diesel Engine radiator CuO-Water Nanofluid Turbulent Flow Heat Transfer Pumping Power

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Influence of the Coolant Flow Containing Silver Nanoparticles (Ag) from an Aqueous Solution Based on Ethylene Glycol (EG50%) on the Thermal-Hydraulic Performance of an Automotive radiator

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World Journal of Nano Science and Engineering 2020年第1期10卷 14-26页

作者： Luiz Carlos Cordeiro Junior élcio Nogueira Department of Mechanics and Energy FAT/UERJ Resende Brazil

A theoretical analysis of the influence of the flow of a coolant containing silver nanoparticle (Ag) in an automotive radiator is presented. The coolant fluid is composed of water or an aqueous solution of Ethylene-Glycol (EG50%) and silver nanoparticles. Ethylene glycol (EG) has been used in automobile radiators for many years due to its compatibility with metals and its anti-cooling properties. Silver nanoparticles are being incorporated into the development of high-precision surgical equipment. It is shown that the rate of heat transfer increases significantly using silver nanoparticles and ethylene glycol and water. There is a maximum for heat exchange between fluids in all analyzed coolant flows—the maximum moves to higher airflow rates when the coolant flow rate is increased. However, the energy dissipation in the stream also increases, but the relationship between the energy dissipated in the flow and the energy transferred in the form of heat is low, which justifies the use of silver nanoparticles and ethylene glycol, or silver nanoparticles and water as a coolant in the automotive vehicle radiator.

关键词： Automotive radiator Silver Nanoparticle Water-Ethylene Glycol Compact Heat Exchanger

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Power Efficiency Calculation of Acoustic Energy Transmission by a Stepped-Plate radiator

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Energy and Power Engineering 2017年第4期9卷 232-240页

作者： Yonghwan Hwang Wonkyu Moon Department of Mechanical Engineering Pohang University of Science and Technology Pohang Korea

One performance measure of in-air ultrasonic radiators, such as wireless power transmission, is the power efficiency of the transducers. The efficiency of most in-air acoustic radiators is low, even at ultrasonic frequencies;however, a large radiating plate with steps introduced by Gallego-Juarez et al., can provide efficient radiation. Their in-air acoustic radiator consists of a Langevin transducer for wave excitation, a mechanical amplifier, and a stepped plate with a large radiating area. This study describes a design processing technique for a stepped-plate radiator developed for optimum energy transmission at the target point in air. The total efficiency required to transfer the acoustic energy was divided into three categories, and the design parameters of each category were calculated to maximize the efficiency. This design technique allows optimum acoustic radiation efficiency and maximum acoustic energy transmission depending on various acoustic energy transfer conditions.

关键词： Stepped-Plate radiator Maximum Radiation Efficiency Acoustic Energy Transmission

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Control System Design for radiator Thermal Characteristics Experiment System

Control System Design for Radiator Thermal Characteristics E...

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第二十六届中国控制会议

作者： Wang Jiangjiang1,Zhang Chunfa1,Jing Youyin1,An Dawei2 1.School of Energy and Power Engineering,North China Electric Power University,Baoding 071003,Hebei Province,P.R.China2.School of Environment Science and Engineering,Tianjin University,Tianjin 300072,P.R China

The radiator thermal characteristics experiment system is used to test the thermal output of radiator,convector and similar equipments in air-cooled or water-cooled *** paper introduces the designed control system for a wa-ter-cooled radiator thermal characteristics experiment system and the hardware of control *** control strategies of hot-water temperature in heating system and the air temperature in cooling system are *** control system for heat-ing system combines fuzzy control with feedforward control and cascade control to satisfy the different testing work condi-tions and higher stability *** cascade control system for cooling system is *** basis of traditional cascade control system,the setpoint response controller is designed in terms of the robust control H2 optimal performance *** to the system operation requirement for disturbance rejection,a closed-loop for rejecting disturbance signals is configured and the disturbance observer in inner loop is figured out by proposing the desired closed-loop comple-mentary ***,some test experiments are done to show the validity of the designed control system.

关键词： radiator Cascade Control Fuzzy Control H2 Optimal Performance Specification.

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Waterways structural optimum design of electric car radiator

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Computer Aided Drafting,Design and Manufacturing 2012年第2期22卷 39-41页

作者： FAN Bailin CHEN hua ZHANG Pei DOU Jinping School of Mechanical Engineering University of Science and Technology Beijing Beijing 100083 China Shandong Industry Vocational College Zibo 256414 China

Thermal resistance was composed by thermal resistance of Aluminum substrate, thermal resistance of convective heat transfer and the thermal resistance of the cooling liquid. The change rule was studied through the calculation on Aluminum plate thermal resistance, thermal resistance of convective heat transfer and the thermal resistance of the cooling liquid. Its change regular- ity was simulated by toolbox In the MATLAB, and it was found that thermal resistance of convective heat transfer effect on the effi- ciency was most obvious in a certain amount of the heat and flow for thermal resistance of the Pin-fin radiator under the premise. The structural parameters of radiator were related to the size of thermal resistance.

关键词： radiator convective heat transfer, thermal resistance optimum design

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