Determination of the geometric design parameters of pillow-plate heat exchangers

Piper, Mark; Olenberg, Alexander; Tran, Julian M.; Kenig, Eugeny Y.

doi:10.1016/j.applthermaleng.2015.08.097

Cited by 64 publications

(24 citation statements)

References 5 publications

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“…In this work, the pillow-plate geometry was generated by forming simulations. This method, which is described in detail in [7], allows a realistic reconstruction of the pillow-plate geometry, with a deviation from the real pillow-plate surface of less than 4%. The pillow plates generated and investigated in this study are summarized in Table 1.…”

Section: Geometry Generation and Summary Of Studied Pillow Platesmentioning

confidence: 99%

“…The hydraulic diameter d h is determined according to the method proposed in [7]. The pillow-plate 72/42/3/10, used in our experimental set-up (see [5]), is our reference geometry in this study.…”

Section: Geometry Generation and Summary Of Studied Pillow Platesmentioning

confidence: 99%

“…As the characteristic length l char , the hydraulic diameter of the channel determined by the methods proposed in [7] is taken.…”

Section: Process Parameters Definitionsmentioning

confidence: 99%

“…A further simplification employed in [2] was the approximation of the wavy pillow-plate surface by some trigonometric function. This resulted in cross-sectional areas differing from reality (see [7]). …”

Section: Introductionmentioning

confidence: 96%

See 3 more Smart Citations

Numerical investigation of turbulent forced convection heat transfer in pillow plates

Piper

Zibart

Tran

et al. 2016

International Journal of Heat and Mass Transfer

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Section: Geometry Generation and Summary Of Studied Pillow Platesmentioning

confidence: 99%

Section: Geometry Generation and Summary Of Studied Pillow Platesmentioning

confidence: 99%

“…As the characteristic length l char , the hydraulic diameter of the channel determined by the methods proposed in [7] is taken.…”

Section: Process Parameters Definitionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Numerical investigation of turbulent forced convection heat transfer in pillow plates

Piper

Zibart

Tran

et al. 2016

International Journal of Heat and Mass Transfer

Self Cite

View full text Add to dashboard Cite

“…As an alternative to offset-strip fins, dimple-type turbulators can be adopted. In this case, the presence of staggered cylindrical elements in the channel introduces regular disturbances of the flow, inducing recirculation zones and enhancing mixing in the fluid boundary layers, with the ultimate effect of increasing the heat transfer [10,11]. As for offset-strip fins, the higher heat transfer performance is associated to a higher pressure drop.…”

Section: Introductionmentioning

confidence: 99%

Multi-Scale CFD Modeling of Plate Heat Exchangers Including Offset-Strip Fins and Dimple-Type Turbulators for Automotive Applications

et al. 2019

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Plate heat exchangers including offset-strip fins or dimple-type turbulators have a wide application in the automotive field as oil coolers for internal combustion engines and transmissions. Their optimization is a complex task since it requires targeting different objectives: High compactness, low pressure drop and high heat-transfer efficiency. In this context, the availability of accurate Computational Fluid Dynamics (CFD) simulation models plays an important role during the design phase. In this work, the development of a computational framework for the CFD simulation of compact oil-to-liquid heat exchangers, including offset-strip fins and dimples, is presented. The paper addresses the modeling problem at different scales, ranging from the characteristic size of the turbulator geometry (typically µm–mm) to the full scale of the overall device (typically cm–dm). The simulation framework is based on multi-scale concept, which applies: (a) Detailed simulations for the characterization of the micro-scale properties of the turbulator, (b) an upscaling approach to derive suitable macro-scale models for the turbulators and (c) full-scale simulations of the entire cooler, including the porous models derived for the smaller scales. The model is validated comparing with experimental data under different operating conditions. Then, it is adopted to investigate the details of the fluid dynamics and heat-transfer process, providing guidelines for the optimization of the device.

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Evaporation of Binary Mixtures in a Pillow Plate Thermosiphon Reboiler

Jasch,

Lu,

Scholl

2024

Chemie Ingenieur Technik

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Pillow plate heat exchangers show promising performance in extending the operating range of thermosiphon reboilers. Here, the evaporation of binary mixtures during natural circulation evaporation in a pillow plate apparatus was investigated. The experimental results show that the thermal performance is dominated by mixture effects and a component system‐dependent minimum is found. The model approach according to Bennett and Chen has proven to reliably estimate the product‐side heat transfer coefficient for pure substances and mixtures with a low boiling point distance. For wide‐boiling mixtures and low pressures the approach must be adjusted.

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Determination of the geometric design parameters of pillow-plate heat exchangers

Cited by 64 publications

References 5 publications

Numerical investigation of turbulent forced convection heat transfer in pillow plates

Numerical investigation of turbulent forced convection heat transfer in pillow plates

Multi-Scale CFD Modeling of Plate Heat Exchangers Including Offset-Strip Fins and Dimple-Type Turbulators for Automotive Applications

Evaporation of Binary Mixtures in a Pillow Plate Thermosiphon Reboiler

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