Results 21 to 30 of about 3,214,265 (272)

Experimental Study of Subcooled Flow Boiling on Heterogeneous Wetting Surface

Zhileng xuebao, 2023
With the recent increase in power density and miniaturization of various equipment, the requirements for compactness and efficiency of heat exchangers become increasingly stringent. Micro-structured surfaces have a significant impact on flow patterns and
Sun Jia, Lin Yuhao, Li Wei
doaj  

Experimental Flow Boiling Study of R245a at High Reduced Pressures in a Large Diameter Horizontal Tube

Energies, 2022
Evaporators used in organic Rankine cycles (ORC) are designed using existing flow boiling correlations that are mainly based on HVAC&R data. However, the ORC evaporators employed in the industry typically have larger diameters and operational conditions ...
Alihan Kaya, Steven Lecompte, Michel De Paepe   +2 more
doaj   +1 more source

Unsteady heat transfer characteristics of R-407C in the subcooled flow boiling stemming from the oscillating refrigerant flow rate

Case Studies in Thermal Engineering, 2023
The objective of this experiment is to investigate the unsteady heat transfer of R-407C subcooled flow boiling (SCFB) due to the oscillating refrigerant flow rate within a narrow tube oriented horizontally for application in energy efficiency air ...
Wen-Ken Li, Y.J. Wang, T.F. Lin, C.A. Chen, Wei-Mon Yan   +4 more
doaj   +1 more source

Boiling Synchronization in Two Parallel Minichannels—Image Analysis

Energies, 2020
In this paper, the boiling synchronization of two-phase flow patterns in two parallel minichannels of 1 mm in diameter with connected compressible volumes was analyzed. The analysis was performed using images recorded with a high-speed camera. The degree
Gabriela Rafałko, Iwona Zaborowska, Hubert Grzybowski, Romuald Mosdorf   +3 more
doaj   +1 more source

Parameter Study of Boiling Model for CFD Simulation of Multiphase-Thermal Flow in a Pipe

한국해양공학회지, 2021
The demand for eco-friendly energy is expected to increase due to the recently strengthened environmental regulations. In particular, the flow inside the pipe used in a cargo handling system (CHS) or fuel gas supply system (FGSS) of hydrogen transport ...
Soh-Myung Chung, Yong-Seok Seo, Gyu-Mok Jeon, Jae-Won Kim, Jong-Chun Park   +4 more
doaj   +1 more source

Surface effects in flow boiling of R134a in microtubes [PDF]

, 2011
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2011 ElsevierThe inner surfaces of microtubes may be influenced strongly by the process of making them due to manufacturing ...
Tassos G. Karayiannis, Mohamed M. Mahmoud, Mahmoud, MM, Karayiannis, TG, David B.R. Kenning, Kenning, DBR   +5 more
core   +1 more source

Investigation of Wall Boiling Closure, Momentum Closure and Population Balance Models for Refrigerant Gas–Liquid Subcooled Boiling Flow in a Vertical Pipe Using a Two-Fluid Eulerian CFD Model

Energies
The precise design of heat exchangers in automobile air conditioning systems for more sustainable electric vehicles requires an enhanced assessment of CFD mechanistic models for the subcooled boiling flow of pure eco-friendly refrigerant.
Nishit Shaparia, Ugo Pelay, Daniel Bougeard, Aurélien Levasseur, Nicolas François, Serge Russeil   +5 more
doaj   +1 more source

Characteristics of onset of boiling under downward flow condition

Nihon Kikai Gakkai ronbunshu, 2020
Understanding of the onset of boiling plays an important role in the design of boiling equipment. Therefore, many studies have been reported so far, but most of these concerned with the upward flow condition.
Takatoshi KAMEDA, Takeyuki AMI, Hisashi UMEKAWA   +2 more
doaj   +1 more source

An experimental approach to heat loss measurement of horizontal two-phase flow boiling in low-pressure low-flow (LPLF) conditions

Case Studies in Thermal Engineering
A crucial parameter remarkably influencing the reliability and accuracy of vapor quality measurements in flow boiling experiments is the measurement of heat loss.
Mehdi Kabir
doaj   +1 more source

Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network

Complexity, 2018
An optimal prediction model for flow boiling heat transfer of refrigerant mixture R245fa inside horizontal smooth tubes is proposed based on the GRNN neural network.
Meiling Liang, Xiaohui Zhang, Rong Zhao, Xulin Wen, Shan Qing, Aimin Zhang   +5 more
doaj   +1 more source