Results 231 to 240 of about 244,763 (311)

Two-phase flow boiling in a microfluidic channel at high mass flux

, 2020
We report the experimental investigations of two-phase flow boiling heat transfer characteristics of a refrigerant in a microfluidic channel at a high mass flux (more than 1000 kg/m2 s).
Chanyoot Keepaiboon, A. S. Dalkılıç, O. Mahian, H. Ahn, S. Wongwises, P. Mondal, Mostafa Safdari Shadloo   +6 more
semanticscholar   +1 more source

Numerical investigation on flow pattern transformation and heat transfer characteristics of two-phase flow boiling in the shell side of LNG spiral wound heat exchanger

International journal of thermal sciences, 2020
The flow pattern transformation and heat transfer characteristics of refrigerant flow in the shell side of LNG spiral wound heat exchangers (SWHEs) have a significant influence on the performance of SWHEs.
Jianrui Li, Haitao Hu, Haoxian Wang
semanticscholar   +1 more source

Flow excursions and pressure drop oscillations in boiling two-phase channel

International Journal of Heat and Mass Transfer, 2019
The present work aims to study different types of flow instabilities in two-phase flow heated channel. These flow instabilities have an important effect on the performance of the systems with such channels.
Md Emadur Rahman, Suneet Singh
semanticscholar   +1 more source

3-D computational investigation and experimental validation of effect of shear-lift on two-phase flow and heat transfer characteristics of highly subcooled flow boiling in vertical upflow

International Journal of Heat and Mass Transfer, 2020
The present study is focused on development of a 3-D computational approach to predict highly subcooled nucleate flow boiling in vertical upflow. Investigation of existing computational methodology based on Volume of Fluid (VOF) approach revealed ...
Jeongmin Lee, Lucas E. O’Neill, I. Mudawar   +2 more
semanticscholar   +1 more source

Wall function approach for boiling two-phase flows

Nuclear Engineering and Design, 2010
Abstract One of the important goals of the NURESIM project is to assess and improve the simulation capability of the three-dimensional two-fluid codes for prediction of local boiling flow processes. The boiling flow is strongly affected by local mechanisms in the turbulent boundary layer near the heated wall. Wall-to-fluid transfer models for boiling
Boštjan Končar, Mavko Borut
openaire   +1 more source

Effect of nanoparticle additives on the refrigerant and lubricant mixtures heat transfer coefficient during in-tube single-phase heating and two-phase flow boiling

, 2020
Lubricant in heat exchangers acts as a contaminant and it affects the heat transfer and pressure losses. Nanolubricants, that is, nanoparticles dispersed in lubricant oils, have shown potential to augment heat transfer rates in refrigerant direct ...
Pratik S. Deokar, Lorenzo Cremaschi
semanticscholar   +1 more source

Two-phase flow oscillations in microchannel convective boiling

2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS), 2007
A thermal microsystem with integrated heaters, pressure and temperature microsensors, has been fabricated to study local temperature and pressure fluctuations occurring in forced convective boiling in microchannels. The observed two-phase flows can be classified into two patterns: oscillating liquid/vapour interface and liquid burst flow; both leading ...
null Man Lee, null Yi-Kuen Lee, null Yitshak Zohar   +2 more
openaire   +1 more source

Experimental investigation on the thermal and entropic behavior of a vertical helical tube with none-boiling upward air-water two-phase flow

Applied Thermal Engineering, 2019
Helical tubes have great compact structure, two-phase flow stability and well thermal performance. The increment of applications which use two-phase flow in helical tubes, necessitates the investigation on thermal and entropic characteristics of two ...
H. Moradi, A. Bagheri, Maziar Shafaee, S. Khorasani   +3 more
semanticscholar   +1 more source

Flow boiling heat transfer and two-phase flow in microgravity

Proceedings of the 15th International Heat Transfer Conference, 2014
Flow boiling heat transfer can provide high heat transfer rates due to latent heat transportation. Its possible use is therefore potentially important to reduce size and weight of cooling systems in space platforms and satellites. A comprehensive knowledge is also important for the safe operation of existing single-phase systems in case of accidental ...
Celata, G.P., Saraceno, L., Zummo, G.
openaire   +3 more sources

Thermal management of concentrator photovoltaic systems using two-phase flow boiling in double-layer microchannel heat sinks

Applied Energy, 2019
Sunlight concentration on photovoltaic cells causes a substantial increase in the cells’ temperature, which leads to a significant reduction in performance and irreversible decay of solar cells.
A. Radwan, S. Ookawara, Mahmoud A. Ahmed
semanticscholar   +1 more source