Pulsating heat pipes: Critical review on different experimental techniques

Pagliarini, Luca; Iwata, Nobuhisa; Bozzoli, Fabio

doi:10.1016/j.expthermflusci.2023.110980

Cited by 24 publications

(3 citation statements)

References 142 publications

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“…These primarily stem from the exploitation of heightened heat transfer rates associated with phase transition phenomena, compactness, and the capability for passive operation. The latter obviates the need for mechanical pumps or gravity dependence, thus further underscoring the utility and practicality of PHPs [7].…”

Section: Introductionmentioning

confidence: 99%

Polymeric Materials Selection for Flexible Pulsating Heat Pipe Manufacturing Using a Comparative Hybrid MCDM Approach

Ordu

Der

2023

Polymers

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The right choice of polymeric materials plays a vital role in the successful design and manufacture of flexible fluidic systems, as well as heat transfer devices such as pulsating heat pipes. The decision to choose an acceptable polymeric material entails a variety of evaluation criteria because there are numerous competing materials available today, each with its own properties, applications, benefits, and drawbacks. In this study, a comparative hybrid multi-criteria decision-making (MCDM) model is proposed for evaluating suitable polymeric materials for the fabrication of flexible pulsating heat pipes. The decision model consists of fourteen evaluation criteria and twelve alternative materials. For this purpose, three different hybrid MCDM methods were applied to solve the material selection problems (i.e., AHP-GRA, AHP-CoCoSo, and AHP-VIKOR). According to the results obtained, PTFE, PE, and PP showed promising properties. In addition, Spearman’s rank correlation analysis was performed, and the hybrid methods used produced consistent rankings with each other. By applying MCDM methods, it was concluded that PTFE is the most suitable material to be preferred for manufacturing flexible pulsating heat pipes. In addition to this result, PE and PP are among the best alternatives that can be recommended after PTFE. The study supports the use of MCDM techniques to rank material choices and enhance the selection procedure. The research will greatly assist industrial managers and academics involved in the selection process of polymeric materials.

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Section: Introductionmentioning

confidence: 99%

Polymeric Materials Selection for Flexible Pulsating Heat Pipe Manufacturing Using a Comparative Hybrid MCDM Approach

Ordu

Der

2023

Polymers

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“…In the process of researching the pressure pulsation characteristics of a non-constant flow field, the change in flow velocity is also accompanied by the transformation of thermal energy, and the two interact and influence each other [6,7]. The pump pressure pulsation research process applies two main means: experimental methods and numerical calculations.…”

Section: Introductionmentioning

confidence: 99%

Pressure Pulsation Characteristics of a Self-Priming Pump under Typical Operating Conditions

Zhao,

Li,

Zhang

et al. 2024

Processes

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To investigate the pressure pulsation characteristics of self-priming pumps under different flow conditions, Fluent 19.2 software was used to numerically calculate the internal flow inside a self-priming pump by means of the RNG k-ε model. The pressure pulsation characteristics, as well as the standard deviation in the volute and impeller domains, were analyzed under different flow conditions. As a result, under rated- and high-flow conditions, the monitoring points in the volute channel have obvious periodic patterns, and the peak pressure pulsations all occur in the octave band of the blade frequency. The pressure pulsation amplitude is larger under the high-flow condition than in the other two conditions. The monitoring points L1 and L5 on the impeller channel centerline are located near the impeller’s inlet and outlet, respectively, so the pressure pulsations are larger than other monitoring points.

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“…However, there are some manufacturing processes that need more attention to guarantee the device's reliability. For instance, the presence of Non-Condensable Gases (NCGs), caused generally due to an incorrect filling procedure, can affect the PHP thermal performance by a rise in the operating temperature and pressure [6] and consequently on thermal resistance; the incorrect welding of the elements can leave some pores and leakages, which will affect the quality of the vacuum, crucial for the proper performance of the device. The engineering industry is exposed to numerous risks and failures that can vary in degree and criticality [7] including in the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

FMECA and FTA analysis applied to the manufacturing process of pulsating heat pipes

Hulse,

Betancur-Arboleda,

Rincon-Quintero

et al. 2023

Heritage and Sustainable Development

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Pulsating heat pipes (PHPs) offer significant advantages for the thermal control of electronic components due to their simple manufacturing and high heat transfer rates. The reliability of PHPs has traditionally been assessed through long-life testing, but detailed reliability analyses from an equipment perspective are limited. The study of PHP reliability is essential due to its application and operational conditions. For instance, in aerospace applications these devices operate under severe conditions, and maintenance or replacement is impossible during operation, making them critical components in system functionality. The reliability analysis of PHPs focuses on the manufacturing process, considering future operating conditions. Although preliminary PHP testing will be conducted on Earth, laboratory conditions are less stringent due to the difficulty of replicating launch acceleration and space conditions for long-term testing under microgravity. This study presents an FMECA (Failure Modes, Effects, and Criticality Analysis) of the pulsating heat pipe manufacturing process, breaking down the production of each component. The results indicate that the most critical point is concentrated in the assembly of these components, leading to a higher incidence of welding failures. It recommends further work to improve welding and analyze mechanical stresses within the heat pipe.

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Pulsating heat pipes: Critical review on different experimental techniques

Cited by 24 publications

References 142 publications

Polymeric Materials Selection for Flexible Pulsating Heat Pipe Manufacturing Using a Comparative Hybrid MCDM Approach

Polymeric Materials Selection for Flexible Pulsating Heat Pipe Manufacturing Using a Comparative Hybrid MCDM Approach

Pressure Pulsation Characteristics of a Self-Priming Pump under Typical Operating Conditions

FMECA and FTA analysis applied to the manufacturing process of pulsating heat pipes

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