Optimal design of a concentric heat exchanger for high-temperature systems using CFD simulations

Hung, Tzu-Chen; Chen, Hung-Chien; Lee, Duen-Sheng; Fu, Hwai-Hui; Chen, Yitung; Yu, Ge-Ping

doi:10.1016/j.applthermaleng.2014.09.079

Cited by 11 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The S/N ratio is always interpreted similarly: a large S/N ratio is favorable. Hung et al [26] indicated that the number of computational fluid dynamics (CFD) simulations can be substantially reduced by Taguchi method to achieve an optimal configuration of the concentric high-temperature heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on solar chimney for optimal heat collection to be utilized in organic Rankine cycle

Lee

Hung

Lin³

et al. 2015

Applied Energy

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Experimental investigations on solar chimney for optimal heat collection to be utilized in organic Rankine cycle

Lee

Hung

Lin³

et al. 2015

Applied Energy

Self Cite

View full text Add to dashboard Cite

“…Computational liquid elements (CFD) were utilized to recreate a three-layered concentric high temperature heat exchanger, utilizing helium gas and liquid salt as hot and cold streams [7]. The intensity exchanger's ideal presentation was accomplished by streamlining boundaries like channel width, blade length, pitch, thickness, and point.…”

Section: Introductionmentioning

confidence: 99%

Pinch Analysis of a Heat Exchanger Using Numerical and Analytical Simulation

Hadi,

Majdi

2024

IJHT

View full text Add to dashboard Cite

The thermal energy transfer characteristics of heat exchangers with thermal fins and evaluates their economic feasibility. It uses computational fluid dynamics simulations and economic analyses to examine various fin geometries, materials, and configurations. The results reveal that fin design parameters, such as height, thickness, spacing, and material properties, significantly influence heat transfer efficiency. The study emphasizes the importance of optimizing these parameters to balance thermal performance and costeffectiveness. The findings guide engineers and policymakers in selecting and optimizing thermal fins. A range of water flow speeds of 0.1, 0.5, and 1 m/s was used, and the dimensions of the fins were reduced in a manner commensurate with the nature of thermal energy transfer and to reduce the manufacturing cost. The study shows that thermal energy transfer through fins increases with fluid flow speed, with the pipe's exit temperature reaching 88 degrees Celsius at 0.1 m/s and 96 degrees Celsius at 0.5 m/s. The fins' temperature distribution varies, reaching 88 degrees Celsius, 94 degrees Celsius due to fin length changes, and 91 degrees Celsius despite fin size changes. The study also analyzed energy transfer through different shapes and flow speeds, finding that shape 1 transferred 340 W at 1 m/s, shape 2 decreased to 144 W, and shape 3 increased surface area but not volume.

show abstract

“…The friction factor increases with increase in helix angle and decreases with the increase in diameter ratio and Reynolds number. Hung et al [6] implemented a CFD analysis for optimal design of a concentric heat exchanger with fins for high temperature systems. They concluded that staggered arrays of flat plates which support the concentric pipes can also serve as thermal fins which are shown to significantly enhance the heat transfer capability of the high temperature heat exchanger due to a large increase of heat transfer area and the occurrence of flow turbulence from impingement effect.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Effects of the Baffles Added in a Concentric Pipe Heat Exchanger

Pamuk¹

2019

IJHT

View full text Add to dashboard Cite

In this numerical work, the effects of baffles added in a Concentric Tube Heat Exchanger are studied, using a commercial software CFD (Computational Fluid Dynamics) package. The CFD model is made to grab all the physical phenomena such as heat transfer rating, temperature, velocity and pressure distributions within the computational domain. First the simplest model, the Heat Exchanger without baffles, is considered. Due to its limited capacity, baffles are added into the domain to investigate the heat transfer enhancement while observing pressure loss that is a direct indication of the pumping power for a given flow rate. A sufficiently high detailed geometry and fine mesh characteristics are adopted taking into account the computation resources and time, yet satisfactory enough to show that the numerical model can be validated using the analytical solutions relying on empirical heat transfer formulas. This gives researches working in Heat Exchanger area the opportunity to design their systems using CFD, without depending on a prototype that needs to be tested before the actual product is marketed. Normally, a new type of heat exchanger with a different tube diameter and baffle lay-out has to be manufactured using general a heat exchanger calculation approach that will most of the time require the revision of the preliminary design.

show abstract

Optimal design of a concentric heat exchanger for high-temperature systems using CFD simulations

Cited by 11 publications

References 20 publications

Experimental investigations on solar chimney for optimal heat collection to be utilized in organic Rankine cycle

Experimental investigations on solar chimney for optimal heat collection to be utilized in organic Rankine cycle

Pinch Analysis of a Heat Exchanger Using Numerical and Analytical Simulation

Numerical Investigation of the Effects of the Baffles Added in a Concentric Pipe Heat Exchanger

Contact Info

Product

Resources

About