Influence of capsule length and width on heat transfer in capsule-type plate heat exchangers

Jiang, Chen; Zhou, Wenxue; Tang, Xiaoying; Bai, Bo

doi:10.1177/1687814019895742

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…Furthermore, at the backside of the conical stamping, the heat transfer coefficient is low owing to flow stagnation and separation of the wake region. The same trends are shown by Jiang et al [12].…”

Section: Resultssupporting

confidence: 87%

“…However, the liquid in this case warms more intensively in the middle of the stream. This can be explained by observing that longitudinal vortices are formed, which increase heat transfer [12]. The structure of the vortex system is strongly influenced by the channel Fluids between plates move along clearly defined trajectories.…”

Section: Resultsmentioning

confidence: 99%

“…The intensity of heat transfer directly depends on the geometry of the corrugation on the surface of the plates. Jiang et al [12] investigated the effect of geometric dimensions of the capsule-type plate heat exchanger on the efficiency of the heat exchanger. They found that the number of longitudinal vortices decreases and the size of the longitudinal vortices increases with increasing Re or decreasing length-to-width ratio of the capsule.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Heat Exchange Plate Geometry by Modeling Physical Processes Using CAD

et al. 2022

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This article presents the possibility of evaluating the efficiency of the heat exchange element with a special stamping plate, which is based on the results of computer simulation. The method is based on a comparative analysis of convective heat transfer models implemented in ANSYS using a k-ε turbulence model. To conduct the study, 3D models of three different types of cavity geometry formed between two heat exchange plates (flat plate, chevron plate, and plate with conical stampings) were built. Simulation was performed by finite element analysis in ANSYS for channels formed by the three types of plates, one of which is a new configuration. The results of hydrodynamic and heat exchange parameters allowed for establishing the efficiency of convective heat exchange for plates of known structures and to compare them with the proposed one. It was found that the plates with conical stamping form the smallest channels through which the fluid moves. The velocity of the coolant is uniform throughout the cross section of the channel and equal to 0.294 m/s; the value of the heat transfer coefficient is the largest of the three models and is 5339 W/(m K), while the pressure drop is 1060 Pa. Taking into account the simulation results, the best heat transfer parameters were shown by the channel formed by plates with conical stamping and the highest pressure drop. To increase the efficiency, indicated by the ratio of heat transfer coefficients to hydraulic resistance, the geometry of the plate with conical stamping was optimized. As a result of optimization, it was found that the optimal geometric parameters of the heat exchange plate with conical stamping were achieved at a 55° inclination angle and 1.5 mm height for the cone. The results of this study can be used in the design of heat exchange elements of new structures with optimal parameters for highly efficient heating of liquid coolants.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of Heat Exchange Plate Geometry by Modeling Physical Processes Using CAD

et al. 2022

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“…Two different performance evaluations have been conducted to evaluate the comprehensive characteristics of capsule-type plate heat exchangers. It is concluded that such heat exchangers with small length and diameter parameters are recommended for use with the intensive heat transfer of the flow [2].…”

Section: Literature Review On the Issue 21 Design Solutions Of Heat E...mentioning

confidence: 99%

Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination

Osintsev,

Aliukov,

Kuskarbekova

et al. 2023

Energies

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The article presents an overview of modern analytical methods and experimental studies on the use of heat exchangers as part of different schemes, as well as technologies that increase the efficiency of heat exchangers using renewable energy sources. The main types of heat exchangers, and the principles of their operation, are considered. In addition, modern technologies for increasing the efficiency of heat exchangers through design are described. The practical experience of using plate heat exchangers in industry has been studied. An overview of the software development that is used in the design and optimization of heat exchange devices, as well as for the improvement of their energy efficiency, is presented. The presented mathematical models can be used for software that is applicable both to individual segments of plates of heat exchangers and heat exchangers in general, taking into account the dependence of the installation of the entire circuit on environmental parameters and location. In conclusion, recommendations are given for further research directions in the field of using heat exchangers with the inclusion of renewable energy sources. The technique of an energy technology complex, including a heat pump, a photovoltaic panel, and a desalination plant, is presented. The methodology is built around the basic design and energy balance of the complex, and it is also considered from the point of view of the exergetic balance. This allows for the use of additional components, such as a turbo expander for the implementation of the organic Rankine cycle, a wind turbine, and a solar concentrator. This scientific approach can become unified for the design and operation of an energy technology complex. In addition, an exergetic calculation method is presented for a thermal desalination plant operating as part of an energy technology complex with renewable energy sources.

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“…Since the length of the holding tube represents the pasteurization time, it is very important to calculate it accurately and correctly. The holding time of raw milk at 72 o C temperature during pasteurization should not be less than 16 seconds [10,11]. It is important to accurately calculate the duration of holding in the case where the power of the pasteurizer and the inner diameter of the selected zig-zag tube are clear.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the difference between the inter-plate holding section and the zig-zag type holding tube in a plate pasteurizer

Tojibaev,

Khudayberdiev

2024

E3S Web Conf.

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Plate heat exchangers are widely used in heat treatment of milk and milk products. The main working part of the plate pasteurizer is a heat exchange unit consisting of three parts (cooling, heating, recuperation). Plate pasteurizer, as we mentioned above, heats raw milk and is used to eliminate various bacteria and viruses that are harmful to the human body in raw milk. The holding section of the pasteurizer plays an important role in decontamination. In some pasteurizers, the holding section is located between the plates. But in modern pasteurizers, retention is carried out through an additional zig-zag tube installed on the outside. The article analyses the difference between the inter-plate holding section and the zigzag type external holding tube in the pasteurization of milk.

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Influence of capsule length and width on heat transfer in capsule-type plate heat exchangers

Cited by 12 publications

References 22 publications

Optimization of Heat Exchange Plate Geometry by Modeling Physical Processes Using CAD

Optimization of Heat Exchange Plate Geometry by Modeling Physical Processes Using CAD

Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination

Experimental study of the difference between the inter-plate holding section and the zig-zag type holding tube in a plate pasteurizer

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