Experimental investigation of energy and exergy efficiency of a pulsating heat pipe for chimney heat recovery

Khodami, R.; Nejad, A. Abbas; Khabbaz, Mohamed

doi:10.1016/j.seta.2016.04.002

Cited by 20 publications

(5 citation statements)

References 26 publications

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“…The measured minimum thermal resistance was 0.36 K/W, which can effectively improve the recovery efficiency of the low temperature heat recovery system. Khodami et al [62] designed a PHP-based waste heat recovery device to recover waste heat from stack exhaust gas. The energy conversion rate was up to 22% in the test.…”

Section: Energy Saving With Excellent Heat Transfer Performancementioning

confidence: 99%

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Xin

Zhu

2022

Energies

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The application of batteries has become more and more extensive, and the heat dissipation problem cannot be ignored. Oscillating Heat Pipe (OHP) is a good means of heat dissipation. In this paper, the methods to improve the energy conversion and flow thermal performance of micro-channel OHP are studied and summarized. The working principle, heat transfer mechanism, advantages and applications of PHP are also introduced in detail in this study. Proper adjustment of the micro-channel layout can increase the heat transfer limit of PHP by 44%. The thermal resistance of two-diameter channel PHP is 45% lower than that of conventional PHP. The thermal resistance of PHP under uneven heating can be reduced to 50% of the original. PHP pulse heating can alleviate the phenomenon of dryness. Different working fluids have different effects on PHP. The use of graphene nano-fluids as the work medium can reduce the thermal resistance of PHP by 83.6%. The work medium obtained by the mixture of different fluids has the potential to compensate for the defects while inheriting the advantages of a single fluid.

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Section: Energy Saving With Excellent Heat Transfer Performancementioning

confidence: 99%

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Xin

Zhu

2022

Energies

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“…To maintain uniform temperature and improve energy efficiency, various designs of heat pipes were used. 234 The application of heat pipes in fuel cells such as micro/mini heat pipes operated at 80 C to 100 C with 110 to 100 W fuel cell power generation capacity, whereas loop heat pipes (LHPs), pulsating heat pipes (PHPs), and sorption heat pipes are utilized in fuel cells having power generation capacity more than 100 W. [235][236][237] The critical review of different heat pipes used for PEM fuel cell thermal management is elucidated below:…”

Section: Heat Pipe Technologymentioning

confidence: 99%

“…Pulsating Heat Pipe (PHP) is a new generation passive heat exchanger with a simple structure and having great heat transfer capabilities as invented by Akachi in 1990. 234,247 These pipes are widely used in cooling electronic components, heat recovery processes, automobile components, space, solar, cryogenic applications, etc. [248][249][250][251] PHP is a lightweight and inexpensive cooling device with a high heat transfer rate and simple construction.…”

Section: Pulsating Heat Pipementioning

confidence: 99%

Factors influencing the performance of PEM fuel cells: A review on performance parameters, water management, and cooling techniques

Singh

Oberoi

Singh

2021

Intl J of Energy Research

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Summary This paper addresses the effects of critical parameters that affect the performance and lifespan of proton exchange membrane (PEM) fuel cells. Amongst all, control of excess water content and dehydration in PEM fuel cells is the major issue under various operating conditions. Therefore, their effects on cathode, anode, gas diffusion layer (GDL), catalyst layer (CL), and flow channels are summarized in the initial part of this paper. Various active cooling strategies such as air cooling, liquid cooling, and phase change method to extract the waste heat from the stack are represented. The lateral part of this paper throws light on the role of heat pipes, working fluid, and the effect of the addition of nanofluid with pertinent filling ratio (FR) in cooling of PEM fuel cells. This work is intended to aid the selection of cooling methods for PEM fuel cells through the consideration of the variety of affecting parameters preceding major expenditure for wide‐scale production. In future, cost comparison associated with the cooling techniques of the fuel cell would be evaluated.

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“…Oguzhan Der et al [57] proposed pulsating heat stripes (PHS) based on PHP for effective thermal management of passive nature in devices and materials, such as fabrics equipped with microelectronic devices, whose thermal management is severely hindered at present by mechanical, size, or weight constraints. R. Khodami et al [114] presented a prototype of a heat exchanger having an exhaust path, an air path and a array of pulsating heat pipes effective for heat recovery from chimneys to reduce the fuel consumption. Adi Winarta et al [115], proposed design of long CLPHP for heat recovery.…”

Section: Miscellaneousmentioning

confidence: 99%

A Review on Pulsating Heat Pipes: Latest Research, Applications and Future Scope

Dave¹,

Dandale

Shrivastava

et al. 2021

Journal of Thermal Engineering

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Heat pipes have become popular as passive heat dissipation devices for many applications ranging from electronics to heat recovery in recent years. Pulsating Heat Pipe abbreviated as PHP is an exclusive category of a heat pipe which does have wick structure. It transfers heat between its evaporator and condenser sections due to the to and fro movement of working fluid caused due to the continuous change of phase taking place in it. Its operation involves combined hydrodynamic and thermodynamic effects causing the two-phase flow, making it difficult to fully understand it. Nevertheless, the PHPs have drawn the attention of investigators worldwide due to their simplicity in construction and a wide range of applications requiring high heat flux transfer. This review starts with a prologue of the attempts made by various investigators to explain the operation of PHPs through mathematical modeling. Later numerical simulations through Computational Fluid Dynamics of PHP performed by various investigators have been discussed. Review of latest experimental investigations performed on PHPs, is presented concisely in a tabular form. Novel concepts like the application of nanofluids, magnetic field and surfactant, applied for enhancing the performance of the PHPs have been discussed. At the end, applications of PHP and future scope have been discussed.

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Experimental investigation of energy and exergy efficiency of a pulsating heat pipe for chimney heat recovery

Cited by 20 publications

References 26 publications

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Factors influencing the performance of PEM fuel cells: A review on performance parameters, water management, and cooling techniques

A Review on Pulsating Heat Pipes: Latest Research, Applications and Future Scope

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