Heat transfer and pressure drop correlations for the rectangular offset strip fin compact heat exchanger

Manglik, Raj M.; Bergles, A. E.

doi:10.1016/0894-1777(94)00096-q

Cited by 481 publications

(201 citation statements)

References 15 publications

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“…in accord with [11]. Figure (4) shows the Colburn factor obtained from experiments (symbols) and from equation (4) (dashed line).…”

Section: Single Phase Heat Transfer In Offset Strip Fins Evaporatorsupporting

confidence: 57%

“…The correlation obtained has been discussed, as a discrepancy with a correlation available in the literature [11] has been observed. Flow boiling heat transfer has then been studied by means of a superposition method [2].…”

Section: Resultscontrasting

confidence: 40%

“…Manglik and Bergles [11] found the following correlation for air in channels with offset strip fins: …”

Section: Single Phase Heat Transfer In Offset Strip Fins Evaporatormentioning

confidence: 99%

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Boiling heat transfer in narrow channels with offset strip fins: Application to electronic chipsets cooling

Pulvirenti

Matalone²,

Barucca³

2010

Applied Thermal Engineering

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International audienceAn experimental study on saturated flow boiling heat transfer of HFE-7100 in vertical rectangular channels with offset strip fins is presented. The experiments have been carried out at atmospheric pressure, over a wide range of vapour quality and heat fluxes up to 1.8×10 W/m. The local boiling heat transfer coefficient has been obtained from experiments and analysed by means of Chen superposition method. Some correlations for convective boiling and nucleate boiling heat transfer coefficients have been considered. A good agreement has been found with Feldman et al. [3] correlation for convective boiling heat transfer and Kim and Sohn [8] correlations for nucleate boiling heat transfer

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“…in accord with [11]. Figure (4) shows the Colburn factor obtained from experiments (symbols) and from equation (4) (dashed line).…”

Section: Single Phase Heat Transfer In Offset Strip Fins Evaporatorsupporting

confidence: 57%

Section: Resultscontrasting

confidence: 40%

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Boiling heat transfer in narrow channels with offset strip fins: Application to electronic chipsets cooling

Pulvirenti

Matalone²,

Barucca³

2010

Applied Thermal Engineering

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“…Transition flow regime (2300 < R e < 6000): The empirical equation to calculate the heat transfer coefficient inside the channel formed by the back surface of the absorber plate with fins and the back plate of the collector has formulated by Manglik and Bergless [1] as: The physical properties of air are assumed to vary linearly with temperature owing to low temperature range to be encountered. The expressions for as functions of temperature are available from Ong [2] .…”

Section: (T T )(T T )(T T ) H (T T )mentioning

confidence: 99%

Mathematical Model of Double Pass Photovoltaic Thermal Air Collector with Fins

Alfegi¹,

Sopian²,

Othman³

et al. 2009

American J. of Environmental Sciences

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Problem statement: The efficiency of photovoltaic cells is generally temperature dependent (efficiency decrease when the temperature of the photovoltaic cells increase). This problem can be solved by cooling the solar cells during operation and operated at low temperature. Approach: This study presented a numerical model of double pass Photovoltaic Thermal (PV/T) solar air collector with fins attached to the back side of the absorber plate to improve heat transfer to the flowing air for predicting the performance of the system. Results: Five coupled of unsteady nonlinear partial differential equations were formulated by using first order forward scheme in time and second order central difference scheme in space to predict the performance of PV/T solar air heater at different parameters and conditions. The temperatures of the solar cells, outlet fluid temperature and the temperature distribution of every static element in both models were predicted. The performance of the collector including photovoltaic, thermal and combined PV/T collector over range of operating conditions are discussed. Conclusion: Experimental and theoretical results were compared and showed that close agreement between these two values were obtained.

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“…The first detailed study in two phase flow was carried out by Lockhart and Martinelli in the year 1949. A number of such studies are cited in the references section (Naphlon and Wongwises., 2002;Manglik and Bergles, 1995;Downing and Gunol Kojasoy, 2002;Chen et al, 2004Rani Hemamalini, et al, 2005.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer studies in a spiral plate heat exchanger for water: palm oil two phase system

Ramachandran

Kalaichelvi

Sundaram

2008

Braz. J. Chem. Eng.

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-Experimental studies were conducted in a spiral plate heat exchanger with hot water as the service fluid and the two-phase system of water -palm oil in different mass fractions and flow rates as the cold process fluid. The two phase heat transfer coefficients were correlated with Reynolds numbers (Re) in the form h = a Re m , adopting an approach available in literature for two phase fluid flow. The heat transfer coefficients were also related to the mass fraction of palm oil for identical Reynolds numbers. The two-phase multiplier (ratio of the heat transfer coefficient of the two phase fluid and that of the single phase fluid) was correlated with the Lockhart Martinelli parameter in a polynomial form. This enables prediction of the twophase coefficients using single-phase data. The predicted coefficients showed a spread of ± 10 % in the laminar range.

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Heat transfer and pressure drop correlations for the rectangular offset strip fin compact heat exchanger

Cited by 481 publications

References 15 publications

Boiling heat transfer in narrow channels with offset strip fins: Application to electronic chipsets cooling

Boiling heat transfer in narrow channels with offset strip fins: Application to electronic chipsets cooling

Mathematical Model of Double Pass Photovoltaic Thermal Air Collector with Fins

Heat transfer studies in a spiral plate heat exchanger for water: palm oil two phase system

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