Experimental and parametric studies of a louvered fin and flat tube compact heat exchanger using computational fluid dynamics

Karthik, P.; Kumaresan, V.; Velraj, R.

doi:10.1016/j.aej.2015.08.003

Cited by 38 publications

(10 citation statements)

References 17 publications

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“…They showed the existence of frequency components in the flow behind a fully-developed louver. By varying the geometrical parameters, Karthik et al [8] performed experimental and parametric analyses in order to study the thermo hydraulic performance of a compact heat exchanger with louvered fins. They showed that the increase in both the transverse and longitudinal tube pitches can lead to a higher pressure drop at un-louvered fin surfaces.…”

Section: Introductionmentioning

confidence: 99%

The effects of fin height, fin-tube contact thickness and louver length on the performance of a compact fin-and-tube heat exchanger

Javaherdeh¹,

Vaisi²,

Moosavi³

2018

IJHT

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In this paper, the effects of fin height, louver length and fin-tube contact thickness on the amount of heat transfer and pressure drop in a compact louvered fin-and-tube heat exchanger were studied experimentally and numerically using the − method. The effects of fintube contact thickness (with the variations of this thickness being more than or less than fin thickness variation) and fin height and also the relationship between Louvre length and fin height were examined. To validate the modeling, first, the numerical model was compared with an experimental prototype, and a good agreement was observed between the experimental and numerical results. The modeling results indicate that the increase in the fin-tube contact thickness, until the contact thickness becomes equal to fin thickness, leads to the improvement of heat exchanger performance; but beyond that, it is ineffective. Also, heat exchanger performance improves with the increase of louver length at a fixed fin height. According to the results, the minimum Louvre length should be 1.0 mm less than the fin height. An analytical equation relating Louvre length to fin height has been obtained, which agrees with model results by up to 98%.

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Section: Introductionmentioning

confidence: 99%

The effects of fin height, fin-tube contact thickness and louver length on the performance of a compact fin-and-tube heat exchanger

Javaherdeh¹,

Vaisi²,

Moosavi³

2018

IJHT

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“…If the Q max value is defined as the maximum possible heat transition, it can be written as follows, provided that it is smaller than the C h or C c thermal capacity outputs [14,15]:…”

Section: Thermodynamic Analysis Of Plate Heat Exchangersmentioning

confidence: 99%

Plate Heat Exchangers: Artificial Neural Networks for Their Design

Kılıç¹

2021

Heat Transfer - Design, Experimentation and Applications

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Heat exchangers are installation components in which two fluids with different temperatures are separated from each other with the help of plates and these plates make heat transfer between two fluids. The biggest advantage of plate heat exchangers over other type of heat exchangers is their heat transfer efficiency. The thinness of the plates separating the two fluids compared to other material alternatives increases the amount of heat transfer and thus reduces the heat losses that may occur during heat transfer. Plate heat exchangers are not only efficient but also prevent the formation of residue and dirt that can accumulate over time in the used applications. It also protects the system against excessive pressure that may occur in the installation. In this study, some information about plate heat exchangers is given such as classification, plate geometry, pressure losses, and thermal calculations. Also, the data obtained from the experimental work were used to obtain some relativity in order to use it in plate heat exchangers and artificial neural networks (ANN) method was used for this purpose. Artificial neural network method is used in many engineering applications. The most important advantages of this method are rapid formation, simple formation and high learning capacity.

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“…Figure 18. Variation of the heat transfer coefficient with respect to the frontal velocity for different (a) tube pitches (F p = 1.5 mm, L p = 1.2 mm, L α =26 o ) and (b) fin pitches (T p = 9.6 mm, L p = 1.2 mm, L α =26 o ) [25]. Figure 19.…”

Section: Performance Evaluation Criteria Of the Louvered Fin Heat Excmentioning

confidence: 99%

Comprehensive Study of Heat Exchangers with Louvered Fins

Erbay¹,

Doğan²,

Öztürk³

2017

Heat Exchangers - Advanced Features and Applications

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The purpose of this chapter is to describe the basic physical features and the analysis of the thermal-hydraulic performance of the louver fins. The terminology which is used widely in the field of compact heat exchanger with louvered fin is described. The flow phenomenon affected by the operating conditions and the geometric parameters of the louvered fin is examined using the flow visualization techniques found in the literature. A methodology is given to calculate the heat transfer and the friction factor. Stanton number, Colburn j-factor and friction factor are defined as a performance criteria and the variations of these criteria with respect to the Reynolds number and the geometric parameters of the louvered fin. The combinations of these dimensionless number such as area goodness factor (j/f), volume goodness factor (j/f 1/3) and JF number related with the volume goodness factor are discussed in terms of overall performance criteria. Finally, the correlations of the louvered fin heat exchanger and their tabulated data was summarized.

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Experimental and parametric studies of a louvered fin and flat tube compact heat exchanger using computational fluid dynamics

Cited by 38 publications

References 17 publications

The effects of fin height, fin-tube contact thickness and louver length on the performance of a compact fin-and-tube heat exchanger

The effects of fin height, fin-tube contact thickness and louver length on the performance of a compact fin-and-tube heat exchanger

Plate Heat Exchangers: Artificial Neural Networks for Their Design

Comprehensive Study of Heat Exchangers with Louvered Fins

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