22 publications
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Evaluation of Thermodynamic Properties of Helium using Cubic Equation of State based Approach for Energy Industry ApplicationsBy Rupsha Bhattacharyya
Abstract: Equations of state based methods are important techniques for thermodynamic property prediction ofcompounds and mixtures. The Peng-Robinson cubic equation of state is one of the most well-knownformulations for gases and gas mixtures used in the process and energy industries. In this study, it isused to predict pertinent thermodynamic state variables of helium gas for its use in very hightemperature as well as extremely low temperature thermodynamic cycle application for powergeneration …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 1, 2021 · pp. 1–9 Read article →
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Development of a Conceptual Framework for Licensing of Nuclear Cogeneration Plants: Insights based on the Indian Experience and Global Best PracticesBy Rupsha Bhattacharyya
Abstract: Nuclear cogeneration projects represent industrial scale non-electric applications of nuclear power, providing value added products and services such as freshwater, high grade heat, hydrogen and other power fuels, district heating, etc. These projects are typically coupled (either thermally and/or electrically) to the secondary cycle of the power plant and can cater to multiple on and off site users. With growing interest in nuclear power and increasing recognition of the role …
Published in International Journal of Chemical Engineering and Processing · Vol. 7, Issue 1, 2021 · pp. 1–11 Read article →
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Creating energy system resilience through stand-alone hybrid solar PV-wind energy system - a case study in IndiaBy Rupsha Bhattacharyya
Abstract: A grid-independent hybrid energy system consisting of commercially available solar photovoltaic panels of 250 W peak power rating and micro wind turbines of 30–40 kW power rating has been considered for electricity production at a selected location in India as a case study. The energy system configuration that leads to lowest levelized electricity cost at that location has been identified through parametric analysis. The configuration has been found to have …
Published in International Journal of Electrical Power System and Technology · Vol. 6, Issue 2, 2020 · pp. 1–21 Read article →
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An overview of current activities in commercial deployment of hydrogen energy projects around the worldBy Rupsha Bhattacharyya
Abstract: Hydrogen energy systems have been proposed as one of the major components of a decarbonized, clean and sustainable energy system of the future, which will also include renewables, nuclear energy and biomass energy forms. Hydrogen production, storage, distribution and re-conversion technologies are essential components of this value chain. This study looks at some commercial level technologies available and projects deployed round the world for ushering in hydrogen energy systems on …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 2, 2020 · pp. 16–25 Read article →
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A Generic Assessment of Commercial Battery based Energy Storage Projects Round the WorldBy Rupsha Bhattacharyya
Abstract: The importance of battery based electrical energy storage projects is on the rise globally, especially in conjunction with the boom in renewable energy technology deployment all over the world. A number of large scale battery energy storage projects have already been deployed and several more are in the pipeline. Along with it, research and development activities on novel battery chemistries are being actively pursued. This work aims to present major …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 2, 2020 · pp. 1–9 Read article →
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An assessment of commercial production of radioisotopes in nuclear power reactors as cogeneration projectsBy Rupsha Bhattacharyya
Abstract: Nuclear cogeneration projects represent an important non-electric application of nuclear power. This study analyses the feasibility of using commercial nuclear power reactors for production of important radio-isotopes in significant quantities as a form of nuclear cogeneration activity. The importance of nuclear and radiation based techniques in a variety of fields is growing rapidly. Thus diversifying into this activity can open up new routes of revenue creation for existing power plants …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 2, 2020 · pp. 1–11 Read article →
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Rapid screening of autonomous electrical power systems using techno-commercial criteria for deep decarbonization in remote areasBy Rupsha Bhattacharyya
Abstract: Techno-commercial analysis of various carbon free electrical energy supply scenarios for remote areas such as islands is absolutely imperative in formulating policies for deep decarbonization and greening of these regions. Options include replacing the current practice of using diesel generators by autonomous power systems based on renewable energy and battery based electricity storage, renewably derived electricity and hydrogen energy storage or use of small modular nuclear reactors (SMRs), provided there …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 1, 2020 · pp. 41–50 Read article →
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Parametric Analysis and Optimization of Nuclear Assisted Electrolytic Hydrogen Production System for On-site ApplicationsBy Rupsha Bhattacharyya, Sachin Kamath
Abstract: The use of compact water electrolyser units as an alternative source of hydrogen to the high pressure hydrogen cylinder banks used at present in nuclear and thermal power reactors for turbo-generator rotor cooling applications has been analysed in this work. Financial metrics have been used for assessment of the technology substitution in the nuclear industry in India, primarily by comparing the levelised costs of onsite hydrogen generation in small generators …
Published in International Journal of Chemical Engineering and Processing · Vol. 6, Issue 1, 2020 · pp. 14–26 Read article →
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Study of the energy utilisation characteristics of solid state hydrogen storage and recovery systemsBy Rupsha Bhattacharyya
Abstract: The energy usage patterns during solid state hydrogen storage and retrieval on commercially available hydride forming alloys have been examined in this work through thermodynamic model based calculations, considering the entire storage and recovery system. It is calculated that energy (mechanical and thermal) equivalent to about 16 to 30% of the stored hydrogen energy is involved in the hydriding step, while 9 to 40% of the stored hydrogen energy equivalent …
Published in International Journal of Chemical Engineering and Processing · Vol. 6, Issue 1, 2020 · pp. 51–61 Read article →
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Quantitative Consequence Analysis of Selected Accident Scenarios at a Refuelling Station for Hydrogen VehiclesBy Rupsha Bhattacharyya, Sachin Kamath, Sandeep K C, Kalyan Bhanja
Abstract: AbstractThe implementation of hydrogen economy and energy systems in any nation will require introduction of a large number of hydrogen refueling stations for hydrogen based automobiles. These will be expected to store a significant inventory of hydrogen on site, either as a compressed gas with pressure of about 750 bar or as a cryogenic liquid at 20 K. Not only does the handling of compressed gases and cryogenic liquids present …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 2, 2019 · pp. 58–81 Read article →
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Concentrating cylindrical-parabolic solar collectors with thermo-electric generators for electricity production – viability assessment in IndiaBy Rupsha Bhattacharyya
Abstract: The use of concentrating solar collectors for converting solar insolation into thermal energy, followed by conversion of thermal energy to electricity via low to medium temperature thermoelectric generators at a particular location in India has been explored in this work. This may be considered a different route to obtaining solar heat and electricity apart from the more usual and direct solar photovoltaic conversion. Even though such a scheme may not …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 2, 2019 · pp. 6–17 Read article →
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Feasibility studies on use of solar thermal energy for electricity production with thermo-electric generators – a case study in IndiaBy Rupsha Bhattacharyya
Abstract: The possibility of producing electricity using solar thermal energy harnesses through flat plate collectors working with water and commercial thermoelectric generator modules has been explored for eight locations in India. This is an alternative to solar photovoltaic electricity production. The most suitable site for setting up such facilities has been identified on the basis of total electricity generation per annum. Even though the overall energy collection efficiency of such an …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 2, 2018 · pp. 48–60 Read article →
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Nuclear waste heat and renewable energy derived hydrogen: Preliminary feasibility analysisBy Rupsha Bhattacharyya, Sandeep KC, Sachin Kamath, Krunal Mistry, Kalyan Bhanja
Abstract: Hydrogen, a possible carbon free energy resource of the future, can be obtained in a sustainable manner from abundantly available resource like water through low temperature, low pressure water electrolysis. This work examines the techno-economic feasibility aspects of a water electrolysis based hydrogen production plant of capacity 1000-10000 Nm3/hr, when coupled with a typical nuclear power plant in India and renewable energy resources in novel ways. The nuclear waste heat …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 2, 2018 · pp. 7–31 Read article →
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Nuclear Cogeneration Projects in India : An Assessment of the Current Scenario and Future ProspectsBy Rupsha Bhattacharyya
Abstract: Desalination of sea water through thermal and membrane based techniques and production of hydrogen through low temperature water electrolysis at facilities co-located with nuclear power plants are two areas identified for deploying co-generation projects in India in the near term. Nuclear desalination meets the requirements of clean drinking water in and around the nuclear facility, as well as to the in-house demand for high purity water for steam generation and …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 2, 2019 · pp. 69–89 Read article →
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Cost Analysis and Optimization of a Nuclear Assisted Electrolytic Hydrogen Production and Distribution Network in IndiaBy Rupsha Bhattacharyya
Abstract: Hydrogen production by alkaline water electrolysis and its distribution via gas pipelines using nuclear electricity as the energy source is a possible scheme that may help facilitate the adoption and implementation of hydrogen energy systems on a large scale. This work provides a techno-economic assessment of a water cooled nuclear reactor based electrolytic hydrogen production and distribution infrastructure in a developing nation like India. The optimal conditions for electrolysis at …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 2, 2019 · pp. 23–43 Read article →
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Fibre reinforced polymers for compressed hydrogen storage vessels: An overviewBy Rupsha Bhattacharyya, Rushal Sharma
Abstract: Fibre reinforced plastics (FRPs) represent an interesting class of composite materials that is gaining importance in the fabrication of various mechanical components as a substitute for metals and alloys, particularly lightweight and high strength pressure vessels for compressed gas storage. They are an important component of hydrogen energy system for vehicular applications, where compact and safe on-board storage of hydrogen gas as a fuel at high pressures of up to …
Published in International Journal of Composite Materials and Matrices · Vol. 4, Issue 1, 2018 · pp. 18–29 Read article →
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Development of dynamic model for alkaline water electrolyser: Application to disturbance analysisBy Rupsha Bhattacharyya
Abstract: A dynamic model of an alkaline water electrolyser plant has been developed to study its time dependent behaviour when it is subjected to dynamically varying inputs like changing electrolyte flow, inlet temperature, pressure, current, voltage. Such dynamic conditions are expected to arise during start up and shut down and also when the electrolyser is coupled to a nuclear or renewable electricity source, both of which exhibit time dependent power output …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 1, 2019 · pp. 11–23 Read article →
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Optimal power dispatch in nuclear cogeneration plants for electricity, water and hydrogen production: A parametric studyBy Rupsha Bhattacharyya
Abstract: Nuclear cogeneration projects where apart from electricity, valuable products like desalinated and purified water, hydrogen and oxygen gases from electrolysis of the water are produced are capable of providing water and energy security in developing and developed nations. They can also potentially become sources of additional revenue for the power plant operators. A simple approach using energy and economics data from published literature is used in this work to develop …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 1, 2019 · pp. 24–36 Read article →
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Analysis and optimization of exergy losses in a heavy water distillation columnBy Rupsha Bhattacharyya
Abstract: Heavy water (D2O) of isotopic purity 99.9% and more is used as the moderator and the coolant in pressurized heavy water nuclear reactors (PHWRs). This purity is maintained by vacuum distillation. In the column there are various sources of irreversibility and thermodynamic inefficiency. This work presents an analysis of these losses in a typical heavy water distillation column and their dependence on various design and operating parameters of the column. …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 2, 2018 · pp. 1–22 Read article →
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Analysis of Vapour-Liquid Equilibrium Behaviour of Cryogenic Hydrogen-Deuterium Mixtures Using Cubic Equation of State-based MethodBy Rupsha Bhattacharyya
Abstract: A comparative analysis of the vapour liquid equilibrium behaviour of the cryogenic hydrogen-deuterium system calculated under the assumption of an ideal solution using pure component vapour pressure data versus that of a real solution using Peng-Robinson cubic equation of state has been presented in this work. It is found that assumption of ideal solution leads to over prediction of the relative volatilities by 14% to 57% depending on the mixture …
Published in International Journal of Chemical Separation Technology · Vol. 4, Issue 2, 2018 · pp. 1–13 Read article →