scispace - formally typeset
Search or ask a question
Author

W.G. Alshaer

Bio: W.G. Alshaer is an academic researcher from Banha University. The author has contributed to research in topics: Airflow & Phase-change material. The author has an hindex of 10, co-authored 14 publications receiving 504 citations.

Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a numerical investigation of predicting thermal characteristics of electronic equipment using carbon foam matrix saturated with phase change material (PCM) and nano carbon tubes as thermal management modules is presented.

152 citations

Journal ArticleDOI
TL;DR: In this article, a detailed experimental study of a hybrid composite system for thermal management of electronics devices was performed and three different TM modules made of pure carbon foam (CF), a composite of CF and Paraffin wax (RT65) as a phase change material (PCM), and a composite CF, RT65 and multi wall carbon nanotubes (MWCNTs), as a thermal conductivity enhancer were developed and tested.

138 citations

Journal ArticleDOI
TL;DR: In this article, the performance of five pure sugar alcohols (xylitol, adonitol, L-arabitol, erythritol, D-mannitol) and three eutectic blends (eythritols/xylols, larsenols, e ndmannols) were compared to those of most currently used phase change materials (paraffin waxes, salt hydrates etc.) in thermal energy storage.

117 citations

Journal ArticleDOI
TL;DR: In this article, the authors performed detailed parametric studies for electronic thermal management systems using different carbon foam structures of different porosities and skeleton thermal conductivities saturated with different phase change materials (PCMs) of different fusion temperatures, heat of fusions and thermal conductivity.

76 citations

Journal ArticleDOI
TL;DR: In this paper, a detailed experimental investigation of using carbon foam-PCM-MWCNT composite materials for thermal management (TM) of electronic devices subjected to pulsed power was conducted.
Abstract: The present article reports on a detailed experimental investigation of using carbon foam–PCM–MWCNTs composite materials for thermal management (TM) of electronic devices subjected to pulsed power. The TM module was fabricated by infiltrating paraffin wax (RT65) as a phase change material (PCM) and multi walled carbon nanotubes (MWCNTs) as a thermal conductivity enhancer in a carbon foam as a base structure. Two carbon foam materials of low and high values of thermal conductivities, CF20 and KL1-250 (3.1 and 40 W/m K), were tested as a base structure for the TM modules. Tests were conducted at different power intensities and power cycling/loading modes. Results showed that for all power varying modes and all carbon foams, the infiltration of RT65 into carbon foam reduces the temperature of TM module and results in damping the temperature spikes height. Infiltration of MWCNTS into RT65 further improves the effectiveness of TM module. Temperature damping was more pronounced in stand-alone pulsed power cycles as compared to pulsed power spikes modes. The effectiveness of inclusion of RT65 and RT65/MWCNTs in damping the temperature spikes height is remarkable in TM modules based on KL1-250 as compared to CF-20.

59 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: In this article, the authors focus on the application of various phase change materials based on their thermophysical properties, in particular, the melting point, thermal energy storage density and thermal conductivity of the organic, inorganic and eutectic phases.

813 citations

Journal ArticleDOI
TL;DR: Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation as discussed by the authors.
Abstract: Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation TES systems are used particularly in buildings and in industrial processes This paper is focused on TES technologies that provide a way of valorizing solar heat and reducing the energy demand of buildings The principles of several energy storage methods and calculation of storage capacities are described Sensible heat storage technologies, including water tank, underground, and packed-bed storage methods, are briefly reviewed Additionally, latent-heat storage systems associated with phase-change materials for use in solar heating/cooling of buildings, solar water heating, heat-pump systems, and concentrating solar power plants as well as thermo-chemical storage are discussed Finally, cool thermal energy storage is also briefly reviewed and outstanding information on the performance and costs of TES systems are included

649 citations

Journal ArticleDOI
TL;DR: In this paper, the enhancement of thermal conductivity by the introduction of highly thermally conductive metallic and carbon-based nanoparticles, metallic foams, expanded graphite and encapsulation of PCM is discussed.

427 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the recent progress of the investigations and applications of composite phase change materials with the enhanced performance is presented, where the focus is placed on the composite PCMs fabricated by using the metal foams and carbon materials, which have proved to be the most promising approaches for thermal conductivity and heat transfer promotion on PCMs.

401 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of number of channels, inlet mass flow rate, flow direction, and width of channels on the thermal behavior of the battery pack were analyzed and the results showed that the mini-channel cold-plate thermal management system provided good cooling efficiency in controlling the battery temperature at 5C discharge.

348 citations