Results 81 to 90 of about 14,664 (244)

Exploratory Study on Carbon Dioxide Blends With Low‐GWP Working Fluids for Medium and High‐Temperature Heat Pumps Under Step Pressure

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates binary zeotropic mixtures of R744 (CO₂) blended with eco‐friendly refrigerants for medium‐high temperature heat pumps, comparing them with conventional R744/R134a systems. All mixtures meet 60–80 K temperature lift requirements under low‐temperature conditions. A genetic algorithm optimized system parameters using fixed
Lingling Sun   +6 more
wiley   +1 more source

SPECIFIC HEAT CAPACITY AND THERMAL CONDUCTIVITY OF HEAT STORAGE MATERIALS BASED ON PARAFFIN, BROWN-COAL WAX AND POLYETHYLENE WAX [PDF]

open access: yesProblems of the Regional Energetics, 2014
The present paper overviews heat storage materials (HSM) with phase change based on organic compounds. They consist of paraffin, brown-coal wax and polyethylene wax. These materials are produced on an industrial scale for the foundry work.
Snezhkin Yu.   +4 more
doaj  

High pressure viscosity measurement with falling body type viscometers [PDF]

open access: yes, 2010
With the increasing number of applications of high pressure chemical and process technologies across a range of engineering fields, there is a corresponding growing interest in the need to measure accurately and reliably important rheological parameters.
Schaschke, Carl
core   +1 more source

Heat Transfer Enhancement Characteristics of Pin‐Fin Liquid Cooling Plate for Pouch Lithium‐Ion Battery

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Addressing issues such as low heat transfer intensity, high system power consumption, and poor temperature uniformity in liquid cooling plates for lithium‐ion batteries (LIBs) in electric vehicles (EVs), a pin‐fin liquid cooling plate was designed to enhance comprehensive heat transfer performance.
Feifei Liu   +5 more
wiley   +1 more source

Knowledge graph-based intelligent control systems for real-time machine tool optimization

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
The stability of computer numerical control machine tool operation directly affects production efficiency and quality. However, there are some uncertain factors concerning with environment in which the control effect of these tools is not ideal.
Hailong YANG, Jun YAO, Baorui DU
doaj   +1 more source

Micromixers simulation [PDF]

open access: yes, 2009
This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009)   +4 more
core  

An introduction to the derivation of surface balance equations without the excruciating pain

open access: yes, 2017
Analyzing complex fluid flow problems that involve multiple coupled domains, each with their respective set of governing equations, is not a trivial undertaking.
Martin, Alexandre   +2 more
core   +1 more source

ERRATA:Diagnostic Technique for Degradation of Engineering Materials by Measurement of Thermophysical Properties

open access: yesNetsu Bussei, 2007
工業材料は表面に多数の微視き裂が発生する劣化初期段階で表面層のみかけ熱伝導率が変化する。熱物性のその場測定技術により、その熱伝導率変化から劣化の度合いを評価、診断する方法を開発した。この微視き裂層が存在する場合について、固体熱物性テスターによる温度応答および熱伝導率測定値に対する影響を理論的に検討した。この理論を検証するために金属材料を用いて疲労試験を行い、試験前後での材料表面と熱伝導率の変化を比較検討した。その結果、それらの熱伝導率減少度から劣化評価パラメータの推算が可能であることを確認した。
Kazunori Kato, Ichiro Takahashi
openaire   +2 more sources

Innovative Approach to Hydrogen Purification: A Review on the Role of Metal Hydrides

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal hydrides, renowned for their unique hydrogen bonding capabilities, have emerged as pivotal materials in the energy sector, particularly for hydrogen storage and purification applications. Their ability to store hydrogen reversibly under moderate conditions has positioned them at the forefront in hydrogen‐based energy systems. This review
T. Mohammed Faheem   +4 more
wiley   +1 more source

The Effect of Wet Compression on a Centrifugal Compressor for a Compressed Air Energy Storage System

open access: yesEnergies, 2019
There is an urgent demand to reduce compression power consumption in Compressed Air Energy Storage (CAES) systems. Wet compression has been widely used in gas turbines to reduce compressor power consumption and improve thermal efficiency, but this ...
Jianting Sun   +4 more
doaj   +1 more source

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