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This study contributes to a better understanding of condensation heat transfer in horizontal non-circular micro-condenser. For this purpose, the experimental investigations of a two-phase flow were conducted to study various flow patterns and coalescence phenomena of steam condensation in rectangular microchannel with hydraulic diameter of 305μm (depth of 310μm and width of 300μm). Local surface temperatures...
Latent energy storage is required to ensure the continuity of a thermal process in energy systems where a temporal difference exists between the supply of energy and its utilization. Good understanding of heat transfer during melting process is crucial for predicting the storage system performance with accuracy and avoiding costly system overdesign. Natural convection heat transfer during melting...
The comparison of the different dewatering processes of bioethanol in basing on the literature showed that the pervaporation is very promising for the separation of azeotropes, reducing the consumption energy and protect the environment. Despite these advantages, this method has limitations concern the bioethanol production capacity and type of membrane used. In this work, we sought to develop a model...
This study focuses on the heat transfer enhancement during solidification process of a phase change material (PCM) inside internally finned rectangular heat storage. Initially, the PCM (paraffin n-Octadecane) is in the liquid state at a temperature above the melting point. The solidification process occurs when the finned wall is abruptly cooled at a temperature below the melting point. To resolve...
To accelerate the charging and discharging of molten salt thermal storage and to enhance heat transfer, the authors of this paper propose a novel idea of using direct contact heat exchange. Under this proposal, a gaseous fluid from the solar field is directly injected into the molten salt system without any heat exchanger. In direct contact heat exchange, efficient energy exchange takes place within...
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