Results 21 to 30 of about 14,835 (276)

Review on phase change materials (PCMs) for cold thermal energy storage applications [PDF]

open access: yes, 2012
Thermal energy storage (TES) is a technology with a high potential for different thermal applications. It is well known that TES could be the most appropriate way and method to correct the gap between the demand and supply of energy and therefore it ...
Cabeza, Luisa F.   +4 more
core   +2 more sources

INFLUENCE OF MELT OVERHEATING NAPHTHALENE, DIPHENYL AND DIBENZYL ON CRYSTALLIZATION

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2014
A sharp change in naphthalene, diphenyl, and dibenzyl crystallization behavior from the equilibrium without overcooling to the nonequilibrium-explosive with overheating was determined bythermoanalysis.
V.D. Aleksandrov, O.A. Pokyntelytsia
doaj   +1 more source

Comprehensive Performance Evaluation of Densified Liquid Hydrogen/Liquid Oxygen as Propulsion Fuel

open access: yesEnergies, 2022
Densified liquid hydrogen/liquid oxygen is a promising propulsion fuel in the future. In order to systematically demonstrate the benefits and challenges of densified liquid hydrogen/liquid oxygen, a transient thermodynamical model considering the heat ...
Fushou Xie, Qiang Sun
doaj   +1 more source

Review on system and materials requirements for high temperature thermal energy storage. Part 1: General requirements [PDF]

open access: yes, 2016
High temperature thermal energy storage offers a huge energy saving potential in industrial applications such as solar energy, automotive, heating and cooling, and industrial waste heat recovery. However, certain requirements need to be faced in order to
Cabeza, Luisa F.   +2 more
core   +2 more sources

CO2 Transcritical Refrigeration Cycle with Dedicated Subcooling: Mechanical Compression vs. Absorption Chiller

open access: yesApplied Sciences, 2019
The objective of this paper is the comparison of two dedicated subcooling methods, after the gas cooler, in a CO2 transcritical refrigeration system. The use of vapor compression refrigeration with R134a for subcooling is the first method, and the second
Evangelos Bellos, Christos Tzivanidis
doaj   +1 more source

Exergetic Investigation of the Effects of Superheating and Subcooling on Performance of a Vapor Compression Refrigeration Cycle

open access: yesEuropean Mechanical Science, 2020
The aim of this study is to investigate the effects of superheating and subcooling values on the cooling performance of a vapor compression refrigeration cycle.
Erdoğan Şimşek, İbrahim Karaçaylı
doaj   +1 more source

Numerical Simulation Research of Bubble Characteristics and Bubble Departure Diameter in Subcooled Flow Boiling

open access: yesMathematics, 2022
Three-dimensional subcooled flow boiling of R134a in a horizontal tube was simulated by a VOF (volume of fluid) model combined with the level set method.
Jinfeng Wang   +5 more
doaj   +1 more source

Mass Transfer Study of Ammonia-water Falling-film Absorption in Vertical Tube

open access: yesZhileng xuebao, 2012
Absorber is the key component of Ammonia-water absorption refrigeration. This study simulate the falling film adiabatic absorption to analyse the characteristics of mass absorption and compare the simulated result with the experiment result. The error of
Xu Zhenzhong   +4 more
doaj   +2 more sources

Quench cooling under reduced gravity

open access: yes, 2013
We report the quench cooling experiments performed with liquid O2 under different levels of gravity simulated with the magnetic gravity compensation. A copper disk is quenched from 270K to 90K.
Beysens, D.   +3 more
core   +3 more sources

Sustained Condensation Efficiency on 3D Hybrid Surfaces

open access: yesSmall Structures
Condensation plays a crucial role in various applications. While superhydrophobic surfaces have been employed to enhance condensation, their performance significantly deteriorates with increasing subcooling, limiting their practicality.
Ching‐Wen Lo   +2 more
doaj   +1 more source

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