Papers by Dr Amandeep Singh Oberoi
The present research work investigates experimentally the reversible electrochemical hydrogen sto... more The present research work investigates experimentally the reversible electrochemical hydrogen storage capacity of activated carbon (aC) made from different precursors. In addition, the feasibility of running a proton flow battery with an integrated solid
International journal of engineering and advanced technology, Oct 30, 2019
Inherently variable nature of renewable sources of energy such as solar and wind, are incapable o... more Inherently variable nature of renewable sources of energy such as solar and wind, are incapable of meeting continuous supply demand. Combining solar photovoltaic (PV) and fuel cell could offer a feasible solution to the challenge of continuous power supply, particularly in those geographical locations where renewable resources are available in abundance. The present paper investigates a solar PV and fuel cell-based hybrid system in-context to a selected site in Indian subcontinent. The feasibility of harnessing renewable energy per sq. meter of land (i.e. energy density) from a combined solar PV-fuel cell based hybrid system employed in Jodhpur location in Rajasthan is reported. The solar irradiance data for the last three decades corresponding to the longitudinal and latitudinal coordinates of Jodhpur is collected using PVsyst software. A novel design of PV-fuel cell hybrid system is proposed to gauge the enhanced utilization of the existing space, productivity enhancement, and energy/m 2 harnessed from the utilized land. The obtained results of solar irradiance are analyzed for implementation in combination with a modified unitized regenerative fuel cell (URFC). The proposed system would outlay a path for the development of a more sustainable, effective and rugged hybrid renewable energy systems that could furnish the energy demands of the Indian sub-continent and similar geographical locations.
Solar Energy has enormous potential to fulfill the energy requirements of the world and can be ex... more Solar Energy has enormous potential to fulfill the energy requirements of the world and can be extracted using solar cells. However, the solar cells are affected by poor efficiency and further affected by wind speed, orientation of the panel, temperature and dust deposition. There are different cleaning technologies devised by many industry experts to clean the solar panels. However, they are facing drawbacks when deployed in the solar farm. An efficient cleaning system, along with an added cooling system must be devised, so that the solar panels must be cleaned and cooled often to maximize the energy production. This paper presents a low-cost, energy-efficient, smart and innovative dust cleaning and cooling system for Photovoltaic (PV) Panels. The system is designed, fabricated, fully-automated using Programmable Logic Controller (PLC) and tested successfully. A battery-charging kiosk, capable of charging two, 24V Lead Acid Batteries embedded within this prototype, shall provide clean-energy in a sustainable manner to the rural communities of the developing nations. The user can check the status of the battery such as battery voltage, battery temperature, and state of charge on the Human Machine Interface (HMI) panel while charging the batteries.
A solid carbon-based composite electrode made from charcoal powder and nafion binder has been dev... more A solid carbon-based composite electrode made from charcoal powder and nafion binder has been developed with potential application of storage of hydrogen electrochemically that could be utilised in fuel cells for remote area power supply. The developed electrode could be employed to store energy generated by inherently variable renewable sources and hence could act as a continuous power supply source. Such potential candidate electrode, particularly for fuel cell applications, should be both proton and electron conductive. Proton conductivity of the composite electrode was calculated from the measured proton resistance towards the flow of current using electrochemical impedance spectroscopy. Electron conductivity was calculated from the separately measured electron resistance using a standard ohm-meter or multimeter. The effect of change in humidity on proton and electron conductivity of the composite electrode was examined. The carbon used was a common form of charcoal powder. Perf...
IOP Conference Series: Earth and Environmental Science, 2019
Over years, researches on power generation from low grade heat energy sources have been increasin... more Over years, researches on power generation from low grade heat energy sources have been increasing rapidly as it will be beneficial towards environment, human lives and also for long term sustainability. Due to its biggest potential and advantages, thermoelectric generator has been reliably used to generate electricity. In this project, an experiment on power generation using thermoelectric generator by employing low grade heat (<150 ˚C) energy source was carried out. The main purpose of this project was to generate useful electricity using thermoelectric generator and to investigate the quality of heat exchanger in enhancing the performance of thermoelectric generator. A prototype heat exchanger was used to carry out this experiment. The heat exchanger was tested with varied hot and cold water supply to study the effect of temperature difference on the thermoelectric generators. For this project, the highest output power obtained was 0.98 W and the maximum efficiency was 1.91%.
Energies
This manuscript presents a thorough review of unitized regenerative fuel cells (URFCs) and their ... more This manuscript presents a thorough review of unitized regenerative fuel cells (URFCs) and their importance in Remote Area Power Supply (RAPS). In RAPS systems that utilize solar and hydrogen power, which typically include photovoltaic modules, a proton exchange membrane (PEM) electrolyzer, hydrogen gas storage, and PEM fuel cells, the cost of these systems is currently higher compared to conventional RAPS systems that employ diesel generators or batteries. URFCs offer a potential solution to reduce the expenses of solar hydrogen renewable energy systems in RAPS by combining the functionalities of the electrolyzer and fuel cell into a single unit, thereby eliminating the need to purchase separate and costly electrolyzer and fuel cell units. URFCs are particularly well-suited for RAPS applications because the electrolyzer and fuel cell do not need to operate simultaneously. In electrolyzer mode, URFCs function similarly to stand-alone electrolyzers. However, in fuel cell mode, the pe...
Applied Mechanics and Materials, Jun 1, 2020
Power generation from fossil fuels in the recent years causes pollution to the environment, thus ... more Power generation from fossil fuels in the recent years causes pollution to the environment, thus renewable energy must be considered as an alternative. Solar energy comes directly from the sun and harnessing this energy is crucial for a sustainable future. In this research, a parabolic solar dish collector was utilized to harness the solar energy. The parabolic dish was hybridized with a thermoelectric generator (TEG) to produce both heat and electricity simultaneously. Since TEG has no moving parts, it requires almost no maintenance, thus making it reliable and robust. This paper presents the experimental investigation performed on the concentrator to convert heat energy from the concentrated solar power using TEGs. The goal of the project was to efficiently generate electricity by using the concentrating dish to concentrate the solar radiation onto the TEG. The TEG was installed on the focal point of the concentrating dish to convert the thermal energy into electricity directly. Air-cooled, fan-cooled and water-cooled cooling method were introduced to cool the generators. At the end of the experiment, it was found out that water-cooled cooling method induced the highest voltage among the other cooling methods.
Energy Procedia, Mar 1, 2017
The origin of the unique geometry for nitric oxide ͑NO͒ adsorption on Pd͑111͒ and Pt͑111͒ surface... more The origin of the unique geometry for nitric oxide ͑NO͒ adsorption on Pd͑111͒ and Pt͑111͒ surfaces as well as the effect of temperature were studied by density functional theory calculations and ab initio molecular dynamics at finite temperature. We found that at low coverage, the adsorption geometry is determined by electronic interactions, depending sensitively on the adsorption sites and coverages, and the effect of temperature on geometries is significant. At coverage of 0.25 monolayer ͑ML͒, adsorbed NO at hollow sites prefer an upright configuration, while NO adsorbed at top sites prefer a tilting configuration. With increase in the coverage up to 0.50 ML, the enhanced steric repulsion lead to the tilting of hollow NO. We found that the tilting was enhanced by the thermal effects. At coverage of 0.75 ML with p͑2 ϫ 2͒-3NO͑fcc+ hcp+ top͒ structure, we found that there was no preferential orientation for tilted top NO. The interplay of the orbital hybridization, thermal effects, steric repulsion, and their effects on the adsorption geometries were highlighted at the end.
International Journal of Smart Grid and Clean Energy, 2014
A metal hydride-nafion composite electrode with dual proton and electron conductivity has been fa... more A metal hydride-nafion composite electrode with dual proton and electron conductivity has been fabricated that may have applications for electrochemical storage of hydrogen. The proton conductivity of the composite electrode was measured using electrochemical impedance spectroscopy. Its electron conductivity was calculated from measurements of dc resistance. Ambient conditions were varied to study the effect of humidification and hence degree of hydration of the electrode on proton and electron conductivity of the composite electrode. The metal hydride used was a common form of AB5 alloy made from rare earth and transition element metals. Nafion-117 solution was employed as the source of nafion within the composite. Proton conductivities in the range 0.0074 to 0.0209 S/cm were obtained, while the electron conductivities were higher, in the range 13.9 to 34.7 S/cm. It was found that the proton conductivity of the composite electrode rose with increased hydration, while electron conductivity fell.
Materials Today: Proceedings
International Journal of Energy Research
A solid carbon-based composite electrode made from charcoal powder and nafion binder has been dev... more A solid carbon-based composite electrode made from charcoal powder and nafion binder has been developed with potential application of storage of hydrogen electrochemically that could be utilised in fuel cells for remote area power supply. The developed electrode could be employed to store energy generated by inherently variable renewable sources and hence could act as a continuous power supply source. Such potential candidate electrode, particularly for fuel cell applications, should be both proton and electron conductive. Proton conductivity of the composite electrode was calculated from the measured proton resistance towards the flow of current using electrochemical impedance spectroscopy. Electron conductivity was calculated from the separately measured electron resistance using a standard ohm-meter or multi-meter. The effect of change in humidity on proton and electron conductivity of the composite electrode was examined. The carbon used was a common form of charcoal powder. Per...
International Journal of Energy Research, 2020
We present an experimental investigation on graphene for electrochemical hydrogen storage when em... more We present an experimental investigation on graphene for electrochemical hydrogen storage when employed in a modified reversible polymer electrolyte membrane (MRPEM) fuel cell. Synthesis of graphene nanomaterial is performed to obtain graphene oxide (GO) using the modified Hummers method. Oxides in GO are reduced to get reduced graphene oxide (rGO) using Cedrus deodara (CD) tree's leaf extract. Physical characterisation of the prepared GO and CD‐rGO is done to ascertain their properties, viz, internal pore surface area, average pore diameter, etc. Solid electrodes are fabricated from the prepared powdered samples of GO and CD‐rGO, and later tested in an MRPEM fuel cell. Electrochemical hydrogen storage capacity of GO and CD‐rGO is found to be 1.21 and 2.7 wt%, respectively. It is successfully demonstrated that hydrogen ions could be stored in a porous graphene electrode and recovered back. The obtained results are analysed to draw a relation between physical characteristics of graphene and electrochemical hydrogen adsorption. It is found that higher internal pore surface area attracts more hydrogen storage in ionic form. This research work is a maiden attempt to show, experimentally, the physical/chemical adsorption of hydrogen in graphene when employed in a reversible PEM fuel cell. This surely could contribute towards the development of a safe and efficient alternate powering source with many potential applications.
pertanika journal of science and technology, 2017
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2021
Heat engine converts chemical engine available in fuel to useful mechanical energy. One of the mo... more Heat engine converts chemical engine available in fuel to useful mechanical energy. One of the most famous heat engines is internal combustion (IC) engine. IC engine plays a pivotal role in transportation and other industrial applications. A lot of waste heat is rejected from a typical IC engine as the conversion efficiency of this type of engine is only about 35-40 %. The waste heat has the potential to be tapped and converted into useful energy. This can help to increase the performance of the IC engine system. This work focused on the conversion of the waste heat energy of the IC engine into electricity by using thermoelectric generator (TEG). The aim of the project was to demonstrate the applicability of TEG to convert waste heat from exhaust to useful electrical energy. Two TEGs were individually tested to attain the electrical characterization and also tested on series and parallel connections. The study showed that the series connection of TEGs has improved and increased volt...
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Papers by Dr Amandeep Singh Oberoi