RESEARCH

PUBLICATIONS

Peer Reviewed

 A.N.M Nihaj Uddin Shan, Md. Zayed Mostafa, Arman Hossain, Mohmmad. Shadman Sakib, M. Monjurul Ehsan; Thermal assessment and optimization of process fluids in transcritical organic and transcritical CO2 Rankine cycle for waste energy recuperating system; Energy Conversion and Management: X, Volume 15, 2022, 100258, ISSN 2590-1745, https://doi.org/10.1016/j.ecmx.2022.100258. (https://www.sciencedirect.com/science/article/pii/S2590174522000812)

Abstract: As natural resources are depleting gradually, scientists are inclining toward the quest for an alternate source of energy and searching for efficient ways to mitigate wastage of energy. The potential of the organic Rankine cycle (ORC) in the application of recovering energy from medium and low-temperature heat sources has been explored by researchers for a long time. Over the years numerous optimizations and modifications have appeared to extract usable power from sources that are fundamentally discharging waste energy to the environment. In this study, a thermodynamic model of basic transcritical Organic Rankine Cycle (TORC) and carbon dioxide-based transcritical Rankine cycle is modeled using a validated MATLAB code, scrutinizing the optimum condition of eleven working fluids. This study prioritizes environment-friendly working fluids and the fluids with lower ODP and GWP indices have been selected for experimentation. These working fluids have been tested setting optimized input parameters and a comparative study of working fluids has been done using exergy destruction distribution. According to the second law analysis, at low turbine inlet temperature, R32 works better than other process fluids. Whereas, at higher temperatures, carbon dioxide delivers better performance compared to other working fluids.

Keywords: Transcritical; Organic; Working fluid; Waste heat recovery; Thermodynamic analysis; CO2

Md. Anayet Ullah Patwari, Arman Hossain, Irteza Maroof, Md. Fahim Mahmud; An Innovative Approach to Assess the Potentiality of using Activated Carbon and Rice Husk Ash in Aluminum-Air Battery; Malaysian Journal on Composites Science and Manufacturing (MJCSM), Vol. 13 No. 1 (2024): March (2024), https://doi.org/10.37934/mjcsm.13.1.5567

Abstract: Aluminum-air (Al-air) cells have the potential to become vital in energy storage applications in the future because of their high energy density, which is even higher than that of commonly used lithium-ion batteries. However, it is not used widely because the cost of air cathode catalysts and metal anode is high. However, suppose the catalysts are replaced with activated carbon or rice husk ash as an alternative and recycled aluminum foil as an anode. In that case, the production cost might be feasible for the vast use of this type of cell. This study's main objective is to utilize some commonly available material in fabricating an Al-air battery suitable for small and day-to-day usage, reducing production costs and limitations. In this paper, a focused analysis was made on the feasibility of using an activated carbon and rice husk mixture as an air cathode catalyst for an Al-air cell, and the observations were interesting. About 11 samples of a mixture of rice husk ash (RHA) and activated carbon (AC) in different ratios have been made to find the best results from 0.68-0.72 V, which increases by 8-20%, measuring each sample after 3 days. In this study, another attempt was made to replace the graphite cathode of a dry cell with a mixture of AC and RHA. Voltage drop is quite negligible for the mixture of 10% RHA. The resulting voltage is similar to the new 100% activated carbon battery as a cathode. If considering the environmental effect, using recycled activated carbon and rice husk ash will decrease pollution and open a new door to apply in primary cells. 

Technical Talk

Dr. Sergey Golovashchenko, Dr. Saeid Nasheralahkami, Arman Hossain; Analysis of Trimmed Edge Condition & Trim Die Durability for Ultra-High Strength Steels; Great Design in Steel (GDIS 2026) - TRACK 2 - Session 01; Past GDIS™ Presentations - American Iron and Steel Institute