Results 101 to 110 of about 9,074 (225)

Evaluation of dissociated and steam-reformed methanol as automotive engine fuels [PDF]

Dissociated and steam reformed methanol were evaluated as automotive engine fuels. Advantages and disadvantages in using methanol in the reformed rather than liquid state were discussed.
Lalk, T. R., Mccall, D. M., Mccanlies, J. M.   +2 more
core   +1 more source

Steam temperature and flow maldistribution in superheater headers

, 2020
Heat exchangers and steam headers are at the heart of any boiler and are susceptible to a range of failures including tube leaks, ligament cracking, creep and fatigue. These common forms of header failure mechanisms can be exacerbated by local thermal stresses due to temperature and flow maldistribution at full and partial boiler load operations.
openaire   +1 more source

An experimental study on heat transfer and pressure drop of MTHE [PDF]

, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011), Dai, C, Li, B, Wang, Q   +3 more
core  

Numerical simulation of gas–liquid two-phase flow in a horizontal manifold with downward branches

Journal of Fluid Science and Technology
Large eddy simulations (LESs) with the volume of fluid (VOF) method are applied to gas–liquid two-phase flows in a horizontal manifold with five downward branches under various inlet flow rates and quality conditions, and the validity is examined by ...
Jun NISHIO, Ryoichi KUROSE
doaj   +1 more source

Microporous hollow fibre membrane modules as gas-liquid contactors. Part 1: Physical mass transfer processes. A specific application: mass transfer in highly viscous liquids [PDF]

, 1993
Gas-liquid mass transfer has been studied in a membrane module with non-wetted microporous fibres in the laminar flow regime. This new type of gas/liquid contactor can be operated stabily over a large range of gas and liquid flows because gas and liquid ...
Kreulen, H., Smolders, C.A., Swaaij, W.P.M. van, Versteeg, G.F.   +3 more
core   +2 more sources

High effectiveness contour matching contact heat exchanger [PDF]

, 1988
There is a need in the art for a heat exchanger design having a flexible core providing contour matching capabilities, which compensates for manufacturing tolerance and distortion buildups, and which accordingly furnishes a relatively uniform thermal ...
Blakely, Robert L., Davenport, Arthur K., Roebelen, George J., Jr.   +2 more
core   +1 more source

Impact of a Medium Flow Maldistribution on a Cross-Flow Heat Exchanger Performance [PDF]

, 2012
The plate exchangers (with the mixed current) and the finned cross-flow heat exchangers, which core has the form of a bunch of pipes with flat plate ribs, have the most important meaning among the currently applied heat exchangers with extended surface.
openaire   +2 more sources

Investigation of Fluid Flow and Heat Transfer Characteristics of an Internally Channeled Tube Heat Exchanger under Laminar Flow Conditions

Energies
The so-called internally channeled tube (ICT) is an innovative heat exchanger design proposed in our recent publications based on a channels-in-tube principle. A general, three-dimensional numerical model was suggested to describe fluid dynamics and heat
Abbas J. S. Al-Lami, Eugeny Y. Kenig
doaj   +1 more source

ENHANCED IMPINGEMENT JET COOLING OF GAS TURBINE WALL HEAT TRANSFER USING CFD CHT CODE: INFLUENCE OF WALL THERMAL GRADIENT WITH FIN AND DIMPLE OBSTACLES

Arid Zone Journal of Engineering, Technology and Environment, 2019
Gas turbine (GT) jet cooling using the regenerative or impingement jet backside cooling system is applicable to low NOx GT combustors and was investigated in the present work. The impingement heat transfer investigated is for the techniques where all the
A. M. El-Jummah, G. E. Andrews, J. E. J. Staggs   +2 more
doaj   +2 more sources

Technical Research of New Dispensers in Dry-expansion Shell and Tube Evaporator

Zhileng xuebao, 2017
Fluid flow maldistribution in each tube of a dry-expansion shell and tube evaporator can cause inefficient heat exchange. In this paper, a numerical simulation of flow distribution in a dry-expansion shell and tube evaporator is carried out using CFD ...
Sun Wenqing, Qu Jing, Lu Shihua
doaj