Search Results - "Karayiannis, Tassos G."

Effect of aspect ratio on flow boiling characteristics in microchannels by Al-Zaidi, Ali H., Mahmoud, Mohamed M., Karayiannis, Tassos G.

“…•Bubble size in nucleate boiling region increased with decreasing aspect ratio.•Wall heat transfer rates increases at high aspect ratio.•Base heat flux…”
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Effect of hydraulic diameter and aspect ratio on single phase flow and heat transfer in a rectangular microchannel by Sahar, Amirah M., Wissink, Jan, Mahmoud, Mohamed M., Karayiannis, Tassos G., Ashrul Ishak, Mohamad S.

“…The effect of aspect ratio and hydraulic diameter on single phase flow and heat transfer in a single microchannel was investigated numerically and the results…”
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Flow boiling of HFE-7100 in microchannels: Experimental study and comparison with correlations by Al-Zaidi, Ali H., Mahmoud, Mohamed M., Karayiannis, Tassos G.

“…•Flow boiling study of HFE-7100 in multi-microchannels.•Flow patterns, pressure drop and heat transfer rates in microchannel evaporator.•The heat transfer…”
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Influence of system pressure on flow boiling in microchannels by Lee, Vivian Y.S., Karayiannis, Tassos G

“…•Flow boiling at different system pressures in microchannels using HFE-7200•Increasing system pressure increased the bubble generation frequency•Evidence…”
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Effect of inlet subcooling on flow boiling in microchannels by Lee, Vivian Y.S., Karayiannis, Tassos G.

“…•Increasing subcooling reduced the range for active nucleation sites in flow boiling.•Microchannel flow patterns and two-phase instability affected by…”
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Flow boiling characteristics in plain and porous coated microchannel heat sinks by Lee, Vivian Y.S., Henderson, Gary, Reip, Alex, Karayiannis, Tassos G.

“…•Bubbly, slug, churn and annular flow observed in plain and coated microchannels.•Transition from bubbly to slug flow occurs earlier in coated…”
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Heat transfer correlation for flow boiling in small to micro tubes by Mahmoud, Mohamed M., Karayiannis, Tassos G.

“…There is a large discrepancy in the open literature about the comparative performance of the existing macro and microscale heat transfer models and…”
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Flow Boiling of Water in a Rectangular Metallic Microchannel by Özdemir, Mehmed Rafet, Mahmoud, Mohamed M., Karayiannis, Tassos G.

“…The article presents the experimental results of flow boiling of water in single rectangular microchannels. Three rectangular copper microchannels having the…”
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Performance of vacuum-insulated central pipes for deep borehole heat exchangers in geothermal systems by Kubačka, Ján, Karayiannis, Tassos G

“…Abstract Geothermal energy is considered a promising future energy prospect, with the geothermal well outlet temperature being one of the important parameters…”
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Condensation flow patterns and heat transfer in horizontal microchannels by Al-Zaidi, Ali H., Mahmoud, Mohamed M., Karayiannis, Tassos G.

“…•Experimental study of HFE-710 condensing in a small rectangular channel of 0.57mm hydraulic diameter.•Local heat transfer coefficient increases with…”
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Selected Papers from the 6th Micro & Nano Flows Conference by Brauner, Neima, Karayiannis, Tassos G.

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Experiments and Correlations for Single-Phase Convective Heat Transfer in Brazed Plate Heat Exchangers by Mutumba, Angela, Coletti, Francesco, Reip, Alex, Mahmoud, Mohamed M., Karayiannis, Tassos G.

“…This study presents the single-phase heat transfer and pressure drop characteristics of R1233zd(e) in a Brazed Plate Heat Exchanger (BPHE). Experiments on…”
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Flow boiling of ethanol/water binary mixture in a square mini-channel by Vasileiadou, Parthenopi, Sefiane, Khellil, Karayiannis, Tassos G., Christy, John R.E.

“…Two-phase flow heat transfer was examined in a single 5mm inner hydraulic diameter square channel in a vertical orientation. The channel uses a resistive…”
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Selected Papers from the 5th Micro and Nano Flows Conference by Brauner, Neima, Karayiannis, Tassos G.

“…The 5th Micro and Nano Flows Conference was held at the Politechnico Di Milano between 11 and 14 of September 2016, see http://mnf2016.com . The MNF Conference…”
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Selected Papers From the 4th Micro & Nano Flows Conference by Brauner, Neima, Karayiannis, Tassos G.

“…Heat Transfer Engineering Selected Papers From the 4th Micro & Nano Flows Conference…”
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Surface effects in flow boiling of R134a in microtubes by Mahmoud, Mohamed M., Karayiannis, Tassos G., Kenning, David B.R.

“…The inner surfaces of microtubes may be influenced strongly by the process of making them due to manufacturing difficulties at these scales compared to larger…”
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A study of discrepancies in flow boiling results in small to microdiameter metallic tubes by Karayiannis, Tassos G., Mahmoud, Mohamed M., Kenning, David B.R.

“…► Effect of surface characteristics and heated length in flow boiling were examined. ► Surface characteristics influence heat transfer rates as well as flow…”
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Pool Boiling on Modified Surfaces Using R-123 by Ahmad, Syed W., Lewis, John S., McGlen, Ryan J., Karayiannis, Tassos G.

“…Saturated pool boiling of R-123 was investigated for five horizontal copper surfaces modified by different treatments, namely, an emery-polished surface, a…”
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Flow Boiling in Rectangular Microchannels: 1-D Modeling of the Influence of Inlet Resistance on Flow Reversal by Gedupudi, Sateesh, Kenning, David B. R., Karayiannis, Tassos G.

“…Pressure changes caused by the growth of confined bubbles during flow boiling in mini-/microchannels lead to transient flow reversal in the presence of inlet…”
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Single-Phase Laminar Flow Heat Transfer From Confined Electron Beam Enhanced Surfaces by Ferhati, Arben, Karayiannis, Tassos G., Lewis, John S., McGlen, Ryan J., Reay, David A.

“…An experimental investigation of the thermal-hydraulic characteristics for single-phase flow through three electron beam enhanced structures was conducted with…”
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