Results 1 to 10 of about 17,343 (194)

Flow Maldistribution in Industrial Air Heaters and its Effect on Heat Transfer [PDF]

Chemical Engineering Transactions, 2014
Flow maldistribution in cross-flow heat exchangers used for industrial air heaters or recuperators is fairly common and can lead to a number of undesirable effects, one of which is deterioration in the thermal performance.
M.J. Atkins, J.R. Neale, M.R.W. Walmsley, T.G. Walmsley, G. De Leon   +4 more
doaj   +3 more sources

A review of refrigerant maldistribution [PDF]

International Journal of Automotive and Mechanical Engineering, 2014
In recent years, conservation of energy has become a challenging issue in air-conditioning applications. In order to overcome this issue, many researchers have recommended the use of a Parallel Flow Condenser and a low Global Warming Potential and Ozone ...
Chin, W. M., Ching, Ming Hui, Tang, Sai Hong   +2 more
core   +2 more sources

The Maldistribution Story - An Industrial Perspective

Chemical Engineering Transactions, 2018
For packed distillation columns, maldistribution is by far the most important factor that has a negative influence on performance, especially efficiency. The amount of maldistribution related publications is enormous.
Lothar Spiegel
doaj   +2 more sources

A reduced order pseudochannel model accounting for flow maldistribution in automotive catalysis [PDF]

Scientific Reports
Exhaust aftertreatment systems (EATS) play a critical role in reducing emissions and ensuring compliance with stringent emission regulations. Catalytic converters, as part of EATS, involve complex physico-chemical processes.
Pratheeba Chanda Nagarajan, Henrik Ström, Jonas Sjöblom   +2 more
doaj   +2 more sources

Association between physicians’ maldistribution and core clinical competency of resident physicians: a nationwide cross-sectional study [PDF]

BMJ Open
Objectives With physician maldistribution recognised as a global issue, Japan implemented the physician uneven distribution (PUD) index as a strategic measure.
Kiyoshi Shikino, Yasuharu Tokuda, Yu Yamamoto, Taro Shimizu, Hiroyuki Kobayashi, Masanori Nojima, Sho Fukui, Daiki Yokokawa, Koshi Kataoka, Yuji Nishizaki, Kazuya Nagasaki   +10 more
doaj   +2 more sources

Experimental investigation of maldistribution characteristics of gas‐liquid two-phase flow in a horizontal pipeline

Frontiers in Earth Science, 2022
In the flow distribution of oil and gas gathering and transportation system, the flow pattern, inertia force, gravity, and other factors will lead to uneven flow distribution of each outlet pipe, which will seriously affect the economy and safety of the ...
Na Wei, Na Wei, Na Wei, Lin Jiang, Lin Jiang, Lin Jiang, Shuanshi Fan, Anqi Liu, Haitao Li, Haitao Li, Haitao Li, Shenghui Zhang, Shenghui Zhang, Shenghui Zhang, Chao Zhang, Chao Zhang, Chao Zhang, Jin Xue   +17 more
doaj   +1 more source

Header Shape Effect on the Inlet Velocity Distribution in Cross-Flow Double-Layered Microchannel Heat Sinks

Fluids, 2021
Counter-flow double-layered microchannel heat sinks are very effective for thermal control of electronic components; however, they require rather complicated headers and flow maldistribution can also play a negative role.
Stefano Savino, Carlo Nonino
doaj   +1 more source

Maldistribution of a Thermal Fluid along the U-Tube with a Different Bending Radius—CFD and PIV Investigation

Energies, 2023
This paper investigates the effect of changing the bending radius of pipes on the maldistribution of velocity and turbulence of thermal fluid when flowing through a u-shaped tube bundle used in compact heat exchangers, among other applications. The study
Grzegorz Ligus, Barbara Wasilewska
doaj   +1 more source

Reducing the Flow Maldistribution in Heat Exchangers through a Novel Polymer Manifold: Numerical Evaluation

Energies, 2023
The maldistribution of working fluid is one of the issues in heat exchangers that causes a reduction in performance of not only the heat exchanger but also the entire HVAC system.
Mingkan Zhang, Cheng-Min Yang, Kai Li, Kashif Nawaz   +3 more
doaj   +1 more source

Impact of the increase in the number of community pharmacists on their geographical distribution in Japan: a retrospective survey

Journal of Pharmaceutical Policy and Practice, 2022
Background Appropriate distribution of health care resources is required to adjust regional disparities in the quality of health care. Besides, the number of community pharmacists in Japan has increased recently, but the impact of this increase on the ...
Kazuhiro Iguchi, Midori Ueyama, Hiroto Nishio, Hirofumi Tamaki, Arihiro Osanai, Yoko Ino, Kazuya Nonomura, Megumi Horibe, Toshiyuki Matsunaga, Mitsuhiro Nakamura   +9 more
doaj   +1 more source