Results 211 to 220 of about 2,793 (240)
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Active control of supercooling degree using two surfactants of different molecular sizes
International Journal of Refrigeration, 2018Abstract The authors have achieved active control of the supercooling degree by varying surfactant concentrations. To improve controllability of supercooling dissolution, the following experiments were carried out by different mixing methods using two kinds of surfactant of different molecular sizes.
Koji Matsumoto +4 more
exaly +2 more sources
Active control of supercooling degree using surfactant (In system with solid–liquid interface)
International Journal of Refrigeration, 2015Abstract Supercooling reduces the COP of ice formation systems. So, control of supercooling dissolution is useful and would bring numerous benefits. In a previous report, the authors conducted an experiment to control supercooling dissolution in a mixture with a hydrophilic surfactant and water in a glass test tube which had the liquid–gas(air ...
Koji Matsumoto +6 more
exaly +2 more sources
International Journal of Refrigeration, 2015
Abstract Acoustic levitation constitutes an alternative experiment technology for avoiding contamination from container walls or other external objects. Graphene oxide nanofluid drop was acoustically levitated and solidified, and supercooling degree of nanofluid drop at different cooling temperatures was measured. The supercooling degree of nanofluid
Liu Yudong +5 more
exaly +2 more sources
Abstract Acoustic levitation constitutes an alternative experiment technology for avoiding contamination from container walls or other external objects. Graphene oxide nanofluid drop was acoustically levitated and solidified, and supercooling degree of nanofluid drop at different cooling temperatures was measured. The supercooling degree of nanofluid
Liu Yudong +5 more
exaly +2 more sources
Energy and Buildings, 2021
Abstract A novel microencapsulated composite phase change materials (MCPCMs) with low-supercooling was designed using melamine formaldehyde resin (MF) as the shell via in-situ polymerization. The composite phase change materials (CPCMs) were composed of low cross-linked polyoctadecyl methacrylate (C-PODMA) as solid–solid PCM and n-octadecane (C18) as
Na Han, Xingxiang Zhang
exaly +2 more sources
Abstract A novel microencapsulated composite phase change materials (MCPCMs) with low-supercooling was designed using melamine formaldehyde resin (MF) as the shell via in-situ polymerization. The composite phase change materials (CPCMs) were composed of low cross-linked polyoctadecyl methacrylate (C-PODMA) as solid–solid PCM and n-octadecane (C18) as
Na Han, Xingxiang Zhang
exaly +2 more sources
International Journal of Refrigeration, 2015
Abstract This article aimed to study the supercooling degree and nucleation behavior of nanofluids phase change material. The nanofluids were prepared by adding small fraction of graphene oxide nanosheets in deionized water without any dispersants. The supercooling degree of nanofluids with different concentrations was tested experimentally.
Guang-Hua Hu
exaly +2 more sources
Abstract This article aimed to study the supercooling degree and nucleation behavior of nanofluids phase change material. The nanofluids were prepared by adding small fraction of graphene oxide nanosheets in deionized water without any dispersants. The supercooling degree of nanofluids with different concentrations was tested experimentally.
Guang-Hua Hu
exaly +2 more sources
Experimental Study on Supercooling Phenomenon and Supercooling Degree of Nanofluids
International Journal of Power and Energy Engineering, 2021In recent years, nanofluid has gradually entered people's field of vision due to its unique cold storage performance. Hybrid nanofluid has a more prominent effect. In order to reduce the supercooling degree of the nanofluid and obtain a practical and effective method to reduce the supercooling degree, the nano-particle graphene oxide and Al2O3 are ...
Chengzhen Wu +3 more
openaire +1 more source
Solidification Studies of Nb-Ge Alloys at Large Degrees of Supercooling
MRS Proceedings, 1981ABSTRACTA 32 meter evacuated drop tube has been used to investigate the solidification of Nb-Ge alloys after deep undercooling. Samples have been supercooled as much as 500°K below the liquidus by using free-fall conditions to eliminate crucible induced nucleation.
L. L. Lacy +4 more
openaire +1 more source
Cryobiology, 1983
The relative roles of the degree of supercooling and nucleation temperatures on turkey sperm cell survival and fertilizing capacity during a freeze-thaw cycle were investigated. Basically, the higher the degree of supercooling, which produced lower spontaneous nucleation temperatures during the freezing process, the worse the sperm cells survived, in ...
P M, Zavos, E F, Graham
openaire +2 more sources
The relative roles of the degree of supercooling and nucleation temperatures on turkey sperm cell survival and fertilizing capacity during a freeze-thaw cycle were investigated. Basically, the higher the degree of supercooling, which produced lower spontaneous nucleation temperatures during the freezing process, the worse the sperm cells survived, in ...
P M, Zavos, E F, Graham
openaire +2 more sources
Water droplet impact on superhydrophobic surfaces with various inclinations and supercooling degrees
International Journal of Heat and Mass Transfer, 2019Abstract Water droplet freezing on the surface structures has a gigantic impact on the aircraft, power transmission lines and industrial facilities. Thereby, it is essential and meaningful to clearly understand the droplet impacting and icing behaviors on the supercooled superhydrophobic surface at an angle for the prevention of ice accretion. In the
Bin Ding +4 more
openaire +1 more source
Experimental Thermal and Fluid Science, 2010
Some liquids can be kept in a supercooled or supersaturated metastable state for substantially long periods. Such liquids can be applied as long-term heat storage where the latent heat can be released when needed. As xylitol possesses a relatively high value of latent heat and as it can be easily supercooled, it has promising properties for this ...
Meriläinen, Arttu +4 more
openaire +5 more sources
Some liquids can be kept in a supercooled or supersaturated metastable state for substantially long periods. Such liquids can be applied as long-term heat storage where the latent heat can be released when needed. As xylitol possesses a relatively high value of latent heat and as it can be easily supercooled, it has promising properties for this ...
Meriläinen, Arttu +4 more
openaire +5 more sources