Theoretical and experimental study of the effect of mini channel finned heatsink on TEG performance in air-cooled environment

2021 ◽  
pp. 1-21
Author(s):  
Shenghui Huang ◽  
Wenbin Li ◽  
Daochun Xu ◽  
Xiaomei Sui ◽  
Yuqi Zhang
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
Thermoelectric Generator ◽  
Heating Temperature ◽  
Water Channel ◽  
Generator System ◽  
Venturi Effect ◽  
Air Flow Velocity ◽  
The Mathematical Model ◽  
Two Sides

Abstract Air-cooled finned heatsink (FHS) are more compact then water-cooled heatsink due to no water channel, which is beneficial to simplify the structure of the cooling side of the thermoelectric generator system. Therefore, a mini channel finned heatsink (MCFHS) was designed in this study based on Venturi effect. In this study, the mathematical model of TEG with MCFHS and FHS were developed and verified. The effects of the heating temperature and air flow velocity around the heatsinks on the TEG performance were analyzed and demonstrated. The TEG performance was investigated in terms of the temperatures of the two sides of the TEG, the TEG voltage, and the TEG efficiency. The results revealed that the smaller thermal resistance of heatsink is favorable for greater output of TEG. And the use of the MCFHS can effectively improve the performance of the TEG under different conditions. The maximum TEG efficiency with MCFHS could be 155% higher than the TEG with FHS.

Develop the Low Pressure Large Flow Overflow Valve

2013 ◽  
Vol 579-580 ◽  
pp. 512-516
Author(s):  
Xue Zeng Zhao ◽  
Xi Gui Wang ◽  
Yong Mei Wang
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
High Power ◽  
Low Pressure ◽  
Parallel Structure ◽  
Cavitation Resistance ◽  
Parallel Connection ◽  
Static Performance ◽  
The Mathematical Model ◽  
Large Flow

In the paper, for high-power marine overflow valve of low pressure big traffic problems, the design of the inside leaking mouth leaks in parallel structure ,that is suitable for the different oil and water flow, using additional flow beam, guiding type low pressure large flow overflow valve was developed and the experimental study, obtained the dynamic and static parameters of the valve. Invented the inside leaking and leaked mouth parallel connection structure, inside leaking and leaked mouth parallel connection is established the mathematical model of the overflow valve. Results show that compared with the traditional straight moving type overflow valve, the type overflow valve through a larger flow, has better dynamic and static performance and cavitation resistance.

scholarly journals Experimental Study of the Forces and Parameters for the Opening of Incisions Inside Ocular Cavity

2020 ◽  
Author(s):  
Victor Olenin Ramírez-Beltrán ◽  
Luis Adrian Zuninga Avilés ◽  
Rosa Maria Valdovinos-Rosas ◽  
Jose Javier Reyes-Lagos ◽  
Giorgio Mackenzie Cruz-Martínez
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Experimental Study ◽  
Linear Relationship ◽  
Elastic Material ◽  
Experimental Results ◽  
Orbital Cavity ◽  
Experimental Procedure ◽  
The Mathematical Model

The experimental results of forces and efforts derived from the opening of incisions in the orbital cavity in a pig’s head are presented in this article. The different areas of the incision openings are related to the needs at the incision procedure for a dacryocystorhinostomy. In terms of the experimental procedure, an origin and a plane are defined so as to allow the location of the opening of the incision. The incisions are retracted along an axis of said origin. This procedure has been based on the mathematical model developed for this work, which consists of a procedure for determining the behavior of an incision when a force is applied to retract the skin. The experimental data obtained, suggests the existence of an almost linear relationship between the increment of resistance in relation to the time obtained for each opening, the same of which is deemed to be consistent with the behavior of an elastic material.

Zero Error Analysis and Compensation of No-Beat Time Division Multiplier

2011 ◽  
Vol 130-134 ◽  
pp. 3293-3297
Author(s):  
Wu Zhu ◽  
Shui Xiu Guan
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
Zero Point ◽  
Calibration Method ◽  
Offset Voltage ◽  
Ac Power ◽  
Time Division ◽  
The Mathematical Model ◽  
Poor Stability ◽  
Industrial Frequency

Time division multiplier was widely used in high-precision industrial frequency AC power measurements.The poor stability of zero point was caused by the switch leakage and amplifier offset voltage. Based on the experimental study of the time division multiplier circuit designed in the article, the mathematical model of zero point compensation was established, and then the appropriate calibration method was proposed. Considered the amplifier offset voltage, the error model of the time division multiplier was analyzed and the error expression was obtained. These can provide theoretical guidance for choosing amplifiers of the no-beat time division multiplier.

Experimental Study and Modeling of the Zinc Coating Thickness

2013 ◽  
Vol 712-715 ◽  
pp. 382-386 ◽  
Author(s):  
Peter Michal ◽  
Miroslav Gombár ◽  
Alena Vagaská ◽  
Ján Piteľ ◽  
Ján Kmec
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
Zinc Coating ◽  
Constant Current ◽  
Factor Level ◽  
Constant Current Density ◽  
Factors Affecting ◽  
Zinc Plating ◽  
The Mathematical Model

The effects of six factors, affecting during the acid zinc plating process as its technological conditions, on the thickness of the resulting zinc coating has been examined. In order to control the quality of the resulting zinc coating deposited on the surface alloy EN 355 at a constant current density of 5 [Adm-2], the mathematical model predicting the thickness of deposited coating was developed using Design of Experiments (DoE) method. The obtained mathematical model describes the resulting deposited layer of zinc coating in dependence on the factor-level changes and combinations with the reliability of 58.75%.

Experimental Study and Mathematical Modeling of Development of Crystallographic Slip in Heterophase FCC Alloys

2014 ◽  
Vol 1013 ◽  
pp. 300-306
Author(s):  
Nina Grigorjeva ◽  
Olga Daneyko ◽  
Tatiana Kovalevskaya
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Experimental Study ◽  
Plastic Deformation ◽  
Experimental Results ◽  
Plastic Behavior ◽  
Crystallographic Slip ◽  
Fcc Alloys ◽  
Fcc Materials ◽  
The Mathematical Model

The experimental results of plastic behavior investigation of Al-6%Zn-3%Mg alloy are compared with the mathematical model of plastic deformation of dispersion hardened FCC materials with undeformed particles. Were determined the factors, when model properly describes the regularities of slip development in this alloy.

scholarly journals Effect of Surface Topography and Structural Parameters on the Lubrication Performance of a Water-Lubricated Bearing: Theoretical and Experimental Study

Coatings ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 23 ◽  
Author(s):  
Zhongliang Xie ◽  
Zhushi Rao ◽  
Huanling Liu
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
Surface Topography ◽  
Test Data ◽  
Theoretical Calculations ◽  
Structural Parameters ◽  
Stiffness Coefficients ◽  
Lubrication Performance ◽  
The Mathematical Model ◽  
Effect Of Surface

This study explored the influence of the surface topography of a bushing on the lubrication performance of a water-lubricated bearing. Bushing deformations were considered in the mathematical model. Theoretical calculations and experiments were performed. The test data corresponded well with the simulation. The main stiffness and cross stiffness coefficients were measured and compared with the theoretical values, and the empirical formula of friction coefficient was fitted based on the test data.

The Effect of Temperature and Pulling Rate on Young's Modulus of Steel FAS390Q

2011 ◽  
Vol 299-300 ◽  
pp. 337-340
Author(s):  
Bing Yu Liu ◽  
Jing Yuan Yu
Keyword(s):  
Mathematical Model ◽  
Statistical Analysis ◽  
Young’S Modulus ◽  
Power Index ◽  
Young's Modulus ◽  
Heating Temperature ◽  
Absolute Temperature ◽  
Effect Of Temperature ◽  
The Mathematical Model ◽  
The Relationship

The effect of heating temperature and pulling rate on Young's modulus of steel FAS390Q was studied. The results show that the relationship between Young's modulus and reciprocal of absolute temperature follows exponent change, and Young's modulus and pulling rate follows power function relation (power index for 0.189). Crystal vacancy is one of the most important reasons for elasticity phenomenon of steels, which results in the fact that the Young's modulus is affected by pulling rate. Based on the statistical analysis, the mathematical model between Young's modulus of high temperature and pulling rate is established.

scholarly journals Addressed Fiber Bragg Sensors for Vibration Diagnostics of Complex Objects

2020 ◽  
Author(s):  
A. Kuznetsov ◽  
K. Lipatnikov ◽  
A. Sakhabutdinov ◽  
O. Morozov ◽  
K. Karimov
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
Fiber Bragg Gratings ◽  
Comparative Assessment ◽  
Complex Objects ◽  
Vibration Diagnostics ◽  
Bragg Structures ◽  
Order Of Magnitude ◽  
Diagnostics System ◽  
The Mathematical Model

The paper presents the results of a study of the concept of address fiber Bragg structures in the problem of vibration control. The mathematical model of measuring transformation is presented; the experimental study of a vibration diagnostics system based on Address Fiber Bragg Gratings is carried out; the quantitative and qualitative comparative assessment with electronic accelerometers is made; the gain by an order of magnitude in some parameters is shown.

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