A review of pulsating heat pipes encompassing their dominant factors, flexible structure, and potential applications

Mushan, Sagar G.; Deshmukh, Vaibhav N.

doi:10.1080/15435075.2024.2319229

Cited by 2 publications

(2 citation statements)

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“…Common working fluids are water, ethanol, acetone, and refrigerants such as FC32 and R134a. Recent advancements have been comprehensively reviewed in publications [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Common working fluids are water, ethanol, acetone, and refrigerants such as FC32 and R134a. Recent advancements have been comprehensively reviewed in publications [11][12][13]. With the growing demand for cryogenic heat transfer technology in various applications including space detectors, cryogenic propellants, and superconductivity technology, PHPs have been applied in the cryogenic industry with helium [14,15], neon [16,17], nitrogen [18,19], and hydrogen as the working fluid.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Study of Heat Transfer and Fluid Flow Characteristics of a Hydrogen Pulsating Heat Pipe with Medium Filling Ratio

Yang,

Bu,

Jiao

et al. 2024

Energies

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Benefiting from its high thermal conductivity, simple structure, and light weight, the pulsating heat pipe (PHP) can meet the requirements for high efficiency, flexibility, and low cost in industrial heat transfer applications such as aerospace detector cooling and vehicle thermal management. Compared to a PHP working at room temperature, the mechanism of a PHP with hydrogen as the working fluid differs significantly due to the unique thermal properties of hydrogen. In this paper, a two-dimensional model of a hydrogen PHP with a filling ratio of 51% was established to study the flow characteristics and thermal performance. The volume of fluid (VOF) method was used to capture the phase distribution and interface dynamics, and the Lee model was employed to account for phase change. To validate the model, a comparison was conducted between the simulation results and experimental data obtained in our laboratory. The simulation results show that the pressure and temperature errors were within 25% and 5%, respectively. Throughout a pressure oscillation cycle, the occurrence of uniform flow velocity, acceleration, and flow reversal can be attributed to the changes in the vapor–liquid phase distribution resulting from the effect of condensation and evaporation. In addition, when the fluid velocity was greater than 0.6 m/s, dynamic contact angle hysteresis was observed in the condenser. The results contribute to a deeper understanding of the flow and heat transfer mechanism of the hydrogen PHPs, which have not been yet achieved through visualization experiments.

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“…Common working fluids are water, ethanol, acetone, and refrigerants such as FC32 and R134a. Recent advancements have been comprehensively reviewed in publications [11][12][13].…”

Section: Introductionmentioning

confidence: 99%