Comparison of thermal performances of water-filled, SiC nanofluid-filled and SiC nanoparticles-coated heat pipes

Kim, Kyung Mo; Jeong, Yeong Shin; Kim, In Guk; Bang, In Cheol

doi:10.1016/j.ijheatmasstransfer.2015.04.108

Cited by 45 publications

(10 citation statements)

References 22 publications

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“…If the thermal resistance is small, heat transfer will be better and vice versa. The thermal resistances of evaporator and condenser sections and the overall thermal resistance of heat pipe were evaluated using the following equations 36,37 R e ¼ T e À T sat Q e (1) where T e and T c are the average wall temperatures of evaporator and condenser sections ( C). In order to obtain T e and T c , the wall temperatures were recorded with time along the length of the heat pipe (in the axial direction).…”

Section: Performance Parametersmentioning

confidence: 99%

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Parametric studies on interacting parameters influencing heat pipe performance

Kumar

Jain

Shah

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

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The performance of a heat pipe is governed by many parameters, the effects of which may influence each other. Hence, it is utmost important to optimize the combination of these parameters for an effective energy transfer in a heat pipe. In the present study, the interacting effects of four different parameters affecting the effectiveness of heat pipe are studied namely the fluid filling ratio (20%, 30%, 40%), the pressure inside the heat pipe (0.2 bar, 1 bar, 1.8 bar), the number of wick layers (0, 1, 2) and the inclination angle of heat pipe (0°, 45°, 90°). The response surface method based on central composite design approach is applied to optimize the number of experiments. The effects of interacting parameters on the effectiveness of heat pipe are discussed. Among the various parameters, the pressure inside the heat pipe was found to be the most important parameter followed by the fluid filling ratio, the inclination of heat pipe and the number of wick layers. From the analysis, the optimum combination of parameters was obtained as 40% filling ratio, 0.2 bar pressure, 2 wick layers and 0° inclination. At this point, the effectiveness predicted with the model and obtained through experiments was found to be 0.630 and 0.649 respectively. Based on the experimental results, a quadratic empirical model is developed which predicts the effectiveness of heat pipe within [Formula: see text]% of the experimental results for different operating conditions of heat pipe.

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Section: Performance Parametersmentioning

confidence: 99%

“…The heat transfer characteristics of the evaporator and condenser sections were studied in terms of the heat transfer coefficient. The heat transfer coefficients for evaporation and condensation and the overall heat transfer coefficient were evaluated using the following equations 36,37 h e ¼ Q e A e ðT e À T sat Þ (6)…”

Section: Performance Parametersmentioning

confidence: 99%

Parametric studies on interacting parameters influencing heat pipe performance

Kumar

Jain

Shah

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…Kim et al. [53], experimentally, compared the thermal performance of SiC/water nanofluid filled heat pipe and water filled heat pipe with SiC nanoparticle coated screen mesh wick. SiC/water nanofluids were prepared by dispersing weighted particles into base fluid and sonicated for 3 hr.…”

Section: Main Textmentioning

confidence: 99%

“…[39] worked with 1 kPa, Kim et al. [53] have 12.5 kPa, Kumaresa et al. [65] used 13.46 kPa, Putra et al.…”

Section: Critique Of Review Workmentioning

confidence: 99%

Current research aspects in mono and hybrid nanofluid based heat pipe technologies

Bumataria

Chavda

Panchal³

2019

Heliyon

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Technological development has leads to need of more compact thermal management system especially in electronic cooling systems. Heat pipe with the use of mono and hybrid nanofluids are recent trends to satisfy the need of enhanced heat transfer and miniaturization in size. In this article, a state-of-the-art review on different types of heat pipe s, nanofluids preparation and characterization techniques have been carried out. The study begins with an overview of heat pipe and discussed about heat pipe with sintered, grooved and mesh wick structures, applications, mono nanofluids and hybrid nanofluids. The research works carried out for last decade are analyzed in terms of types of heat pipe, working medium, nanofluids preparation and characterization techniques. Effect of operating variables like nanoparticle size, shape and concentration, filling ratio, inclination angle and heat load are also presented. In last, the possible future research thrusts are presented.

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“…Also, the results indicated that the maximum heat removal capacity of the heat pipe increases by 29% for 1.0 wt.% SiC nanoparticles. Thermal performances of heat pipes using nanofluids based on SiC particles were investigated by Kim et al [13]. In this study, volume concentrations of nanoparticles of 0.01% and 0.1% respectively were considered.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer characteristics of a two-phase closed thermosyphons using nanofluids based on sic nanoparticles

Huminic¹,

Huminic²,

Fleaca³

et al. 2016

IJHT

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The main goal of the present study was to investigate of the thermal conductivity and heat transfer characteristics of two-phase closed thermosyphon (TPCT) with SiC/water nanofluids. The outer diameter and length of the TPCT were of 10 and 300 mm, respectively. The laser pyrolysis and TEM techniques were used for synthesis and characterization of the nanoparticles. The mixtures of water and nanoparticles were prepared using a double ultrasonic homogenizer. The measurement of thermal conductivity of SiC/water nanofluids were investigated between 20 °C and 50°C, for two weight concentrations (0.5 and 1.0 wt%).%). The results show that the thermal conductivity of SiC/water nanofluids increases with the increasing of weight concentration of the nanoparticles and temperature. Also, effects of operating temperature and nanoparticles concentration on the heat transfer characteristics of TPCT were considered. The nanofluids based on SiC nanoparticles enhance heat transfer characteristics of TPCT compared with TPCT using water.

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Comparison of thermal performances of water-filled, SiC nanofluid-filled and SiC nanoparticles-coated heat pipes

Cited by 45 publications

References 22 publications

Parametric studies on interacting parameters influencing heat pipe performance

Parametric studies on interacting parameters influencing heat pipe performance

Current research aspects in mono and hybrid nanofluid based heat pipe technologies

Heat transfer characteristics of a two-phase closed thermosyphons using nanofluids based on sic nanoparticles

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