Nusselt number correlations for a microchannel heat exchanger hot water supplier with S-shaped fins

Tsuzuki, Nobuyoshi; Utamura, Motoaki; Ngo, Tri Lam

doi:10.1016/j.applthermaleng.2009.05.004

Cited by 46 publications

(15 citation statements)

References 7 publications

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“…Offset fins have been studied by Steinke et al (2006) through analytical and experimental approaches. Tsuzuki et al (2009) have numerically simulated the concept of S-shaped fins for a microchannel heat exchanger with water on one side and sub-critical carbon di-oxide on the other side and they have deduced Nusselt number correlations from the simulated results. Lee et al (2012 and2013) experimentally tested and numerically simulated oblique shaped fins.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Microchannel Heat Sink with Modified Hexagonal Fins

Subramanian

Sridhar

Umesh

2019

JAFM

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The concept of periodic renewal of boundary layers is a promising technique for the enhancement of heat transfer in microchannels. Extending the above concept, microchannel heatsink with modified hexagonal fins has been proposed for disrupting the flow periodically. An experimental study has been carried out to investigate the heat transfer and fluid flow characteristics of a microchannel heat sink with modified hexagonal fins and a conventional type of microchannels with plate fins. The heat transfer and fluid flow characteristics of the modified hexagonal fin microchannels have been compared with the plate fin microchannels. The heat transfer enhancement factor and pressure drop penalty factors are evaluated and compared. The modified hexagonal fin microchannel heat sink has been found to outperform the plate fin microchannel heat sinks in spite of the lesser heat transfer area.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Microchannel Heat Sink with Modified Hexagonal Fins

Subramanian

Sridhar

Umesh

2019

JAFM

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“…It was found that the flow could not be fully-developed at the high temperature due to the significant variation of the thermal physical properties of sCO2. Tsuzuki et al [38][39][40] developed a new PCHE with S-shaped fins. They validated numerically that the PCHE with S-shape fins had the same heat transfer performance as the zigzag PCHE but with the benefit of one-fifth of the pressure drop.…”

Section: Supercritical Co2 Heat Exchangermentioning

confidence: 99%

A review of supercritical CO2 Brayton cycle using in renewable energy applications

Chu

Bennett

Cheng

et al. 2018

Ren. Ener. & Sust. Dev.

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Supercritical carbon dioxide (sCO2), which is an environmentally friendly working fluid, has very good thermal physical properties. Many researchers have studied the heat transfer mechanism and the enhanced heat transfer method of the supercritical CO2 Brayton cycle (sCO2-BC). The sCO2-BC has many applications including the next generation of Fast Cooling Reactor (FCR), solar power system, extraction process and heat pump system. The sCO2-BC provides high efficiency and high compactness, which is important because system miniaturization is vital to these developing technologies. The present paper reviews the recent references on the research progress of the sCO2-BC system. Furthermore, it discusses the analysis of key components such as the compressor, turbine and heat exchanger, which differ from the devices used in the conventional steam Rankine cycle due to the special thermal properties of sCO2. Finally, the researchers propose some recommendations towards the development of sCO2-BC system for future work.

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“…In the review paper of Mehendale et al (2000), these size channels are called mesochannels, Balasubramanian et al regarded these channels as microchannels with hydraulic diameter about 0.6 mm, and Tsuzuki et al (2009) used the microchannel definition for channels with hydraulic diameters of 0.59 and 3.36 mm. These developments were boosted by the needs for smaller-size HEs for refrigeration, microturbines, transport systems, electronics cooling, etc.…”

Section: According To the Hydraulic Diameter Of Channelsmentioning

confidence: 99%

Compact Heat Exchangers

Klemeš¹,

Arsenyeva²,

Kapustenko³

et al. 2015

Compact Heat Exchangers for Energy Transfer Intensification

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Nusselt number correlations for a microchannel heat exchanger hot water supplier with S-shaped fins

Cited by 46 publications

References 7 publications

Experimental Investigation of Microchannel Heat Sink with Modified Hexagonal Fins

Experimental Investigation of Microchannel Heat Sink with Modified Hexagonal Fins

A review of supercritical CO2 Brayton cycle using in renewable energy applications

Compact Heat Exchangers

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