Solar thermal energy conversion systems, Thermal energy storage systems, heat exchangers, Nanofluid phase change materials, Energy conservation for building heating and cooling systems.
Performance Evaluation of Battery Pack with E-Rickshaw on Chassis Dynamometer by Using In-House Developed Driving Cycle Shyamsher Saroj, M Sithananthan, Prashant Kumar, Ajay Arora, P Sundaram, Mrinmoy Kalita SAE Technical Papers, 2026 <div class="section abstract"><div class="htmlview paragraph">The present work highlights a case-study that aims to determine the performance (power input/output) and battery temperature on in-house developed e-rickshaw battery pack. With the rise of e-rickshaws in Indian market, the demand for the batteries have also increased and being the largest state-run energy company of India, R&amp;D Centre of Indian Oil Corporation Limited (IOCL) has developed a chemically modified nanomaterial-based lead acid battery.</div><div class="htmlview paragraph">The lab scale experiments, which are not presented in the study due to confidentiality and intellectual property obligations, indicated that the nanomaterial doped lead acid battery pack performs better than the control (reference) and leading commercial batteries in terms of lifecycle, capacity etc. Subsequently, this paper highlights the performance with IOC R&amp;D Centre manufactured 12V/100AH chemically modified (nanomaterial) lead acid battery pack for e-rickshaw on duty cycle developed indigenously based on the city driving experiences.</div><div class="htmlview paragraph">The candidate battery pack of e-rickshaw were duly subjected for evaluation in comparison with control batteries (conventional lead acid configuration) along with leading commercial batteries. The performance tests for the e-rickshaw were conducted on chassis dynamometer which followed in-house charge-discharge cycles and measurement of power input &amp; output with a sophisticated measurement device i.e., power analyzer.</div><div class="htmlview paragraph">The nanomaterial impeded electroplates were made to enhance capacity and durability of lead acid battery and thereon the performance evaluation of e-rickshaws powered by nanomaterial-based control &amp; commercial batteries were conducted in terms of Watt-hour (WH), Ampere-hour (AH), distance travelled per discharge cycle, durability &amp; life cycle measurement by charging and discharging of batteries.</div><div class="htmlview paragraph">Further, discharge (energy dissipation) of batteries were done by in-house developed driving cycle on chassis dynamometer. The cumulative distance covered under the driving cycle by nanomaterial powered e-rickshaw has shown significant improvement than the control and commercial batteries. Furthermore, it is concluded that in terms of durability, nanomaterial-based battery pack is better compared to control and commercial batteries for the SoC and battery temperature which are key performance parameters.</div></div>
Solidification characteristics of biomass-activated aloe vera PCM in a spherical enclosure for efficient cool thermal energy storage A. Sathishkumar, P. Sundaram, K.S. Vignesh, M. Cheralathan, A. Kalaisselvane, Rajendran Prabakaran, Sung Chul Kim Case Studies in Thermal Engineering, 2025 The present work aims to examine the potential of aloe vera liquid (AVL) and activated carbon (AC) as a phase-change material (PCM) for energy efficient cool thermal energy storage (CTES) applications. The low-viscosity and supercooling behavior of deionized water (DIW) limits its usage in the CTES system. Three variants of NEPCMs containing activated-carbon (AC) at concentrations of 1.5 wt%, 1.0 wt%, and 0.5 wt% were analyzed (AVL, DIW, and AVL + DIW). Zeta-potential distribution analysis shows that all the AVL-NEPCMs (−44 mV) are stable, with the particles exhibiting strong mutual repulsion. A maximum thermal-conductivity (TC) enhancement of 24 % and 34 % was noted for the AVL-NEPCMs in the liquid and solid phases, respectively. The AVL has a latent heat of 332 J/g during melting and 305 J/g during freezing, which is nearly equal to that of DIW. In addition, a slight reduction in latent-heat of 8 %, was observed owing to the non-active participation of AC. The freezing characteristics of NEPCMs were studied with spherical enclosure by maintaining a chiller temperature of −8 °C. A 22 % reduction in total solidification time was observed for the AVL-based NEPCM with 1.5 wt% AC, due to the faster nucleation and the elimination of the supercooling process.
Effective utilization of parabolic dish solar collectors for the heating and thermo-electric power generation International Journal of Mechanical Engineering and Technology, 2018