Laminar Flow Forced Convection in Ducts

Shah, R. K.; London, A. L.; White, Frank M.

doi:10.1115/1.3240677

Cited by 437 publications

(736 citation statements)

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“…Equation (9) was derived assuming that the thickness of the heat transfer tubes (t) is negligible and that Nu = 4.66 for the heat transfer fluid under laminar flow conditions [8].…”

Section: Metal Hydride Compressor System Technical Performance Modelmentioning

confidence: 99%

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Corgnale¹,

Sulic²

2018

Metals

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Traditional high-pressure mechanical compressors account for over half of the car station's cost, have insufficient reliability, and are not feasible for a large-scale fuel cell market. An alternative technology, employing a two-stage, hybrid system based on electrochemical and metal hydride compression technologies, represents an excellent alternative to conventional compressors. The high-pressure stage, operating at 100-875 bar, is based on a metal hydride thermal system. A techno-economic analysis of the metal hydride system is presented and discussed. A model of the metal hydride system was developed, integrating a lumped parameter mass and energy balance model with an economic model. A novel metal hydride heat exchanger configuration is also presented, based on minichannel heat transfer systems, allowing for effective high-pressure compression. Several metal hydrides were analyzed and screened, demonstrating that one selected material, namely (Ti 0.97 Zr 0.03 ) 1.1 Cr 1.6 Mn 0.4 , is likely the best candidate material to be employed for high-pressure compressors under the specific conditions. System efficiency and costs were assessed based on the properties of currently available materials at industrial levels. Results show that the system can reach pressures on the order of 875 bar with thermal power provided at approximately 150 • C. The system cost is comparable with the current mechanical compressors and can be reduced in several ways as discussed in the paper.

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“…Equation (9) was derived assuming that the thickness of the heat transfer tubes (t) is negligible and that Nu = 4.66 for the heat transfer fluid under laminar flow conditions [8].…”

Section: Metal Hydride Compressor System Technical Performance Modelmentioning

confidence: 99%

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Corgnale¹,

Sulic²

2018

Metals

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show abstract

“…(281) of [4]. In [1] there appears to be no mention of the necessity to satisfy the First Law of Thermodynamics (conservation of energy when one moves from one cross-section to another downstream cross-section; see [5][6][7][8][9]).…”

Section: Kamel Hooman Applied Energy 85 (2008) 70-72mentioning

confidence: 99%

“…176-177 and 183-184 of Shah and London [4] for T and H cases, respectively. Since [1] covers the same ground as [2] and [3] one can question the need for [1].…”

mentioning

confidence: 99%

Comments on “Viscous-dissipation effects on the heat transfer in a Poiseuille flow” by O. Aydin and M. Avci

Hooman

2008

Applied Energy

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“…The proposed correlations were compared with conventional correlations and with available experimental data, and show very good agreement. Shah and London [8] gives information about boundary layer developed conditions, thermally and hydrodynamically entry length effects. Shekhar D. Thakre and V. B. Swami [10] discuss analysis of heat transfer characteristics through a straight and wavy profile rectangular microchannel heat sink with Reynolds number from 100 to 1000 and same effective length.…”

Section: Related Workmentioning

confidence: 99%

“…Hence, for good heat transfer effect length of channel should be less than thermal entrance length. According to Shah and London [8], thermal entrance length given as, L th = 0.11 × Re × Pr × D h …. (11) For design purpose thermally developing and hydro dynamically developed condition is assumed.…”

Section: G Thermally Developing Flow In Straight Channelmentioning

confidence: 99%

Theoretical and Experimental Investigation of Heat Transfer Characteristics through a Rectangular Microchannel Heat Sink

Gawali¹,

Swami²,

Thakre³

2014

IJIRSET

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Investigation of heat transfer characteristics has been carried out by theoretically and experimentally for a straight microchannel heat sink of rectangular cross section of 507µm hydraulic diameter with water as the circulating fluid. The temperature distribution, pressure drop, heat transfer coefficient and total thermal resistance of the heat sink are selected as criteria for their cooling performance. Parameters that changes in this study are Reynolds number in ranges from 200 to 700. The theoretical results for heat transfer coefficient and thermal resistance are compared with the experimental results. The obtained theoretical results are having the good agreement with experimental results. It is found that the temperature of water in the microchannels increases with channel length. The present work proposes an approach to improve the heat transfer enhancement of microchannel heat sinks

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Laminar Flow Forced Convection in Ducts

Cited by 437 publications

References 0 publications

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Comments on “Viscous-dissipation effects on the heat transfer in a Poiseuille flow” by O. Aydin and M. Avci

Theoretical and Experimental Investigation of Heat Transfer Characteristics through a Rectangular Microchannel Heat Sink

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