EDF Climate Corps Fellow 2017
Iron Mountain, Boston, MA
The summary can be found here
I am a mechanical engineer specialized in renewable energy technologies, a trained project manager, and an interdisciplinary researcher in sustainability. Along the way, I have worked on a multitude of energy-related projects as a design engineer, a research assistant, a consultant, and an assistant professor.
The energy and clean transportation sectors excite me, and my goal is to work in a setting that will allow me to use my diverse skill set to tackle projects in this field.
Sustainable Mobility, Clean Transportation, Multi-criteria Decision Analysis, Data Analysis, Mathematical Modeling, Numerical Analysis, Financial Modeling, Behavioral Analysis, Heterogeneity and Variability, Game Theory, Simulations, Energy Policy, Project Management, Energy System Analysis, Renewable Energy Technologies, Asset Management, Economics, Alternative Fuel Vehicles, Life Cycle Analysis, Solar Thermal Energy, Concentrated Solar Power
My CV can be found here
Research Interest: Energy, Transportation, Policy
The summary can be found here
I worked as an assistant professor at Mechanical Engineering Department of Sinhgad College of Engineering, Pune, India.
The curriculum is designed by Pune University.
My responsibilities include: teaching, research, consulting and supervision
As a faculty in Mechanical Engineering Department, I am involved with the following projects
Development and Validation of Test Standards for Concentrating Solar Cookers
The project is organized by Promoters, Researchers & Innovators in New and Clean Energy (PRINCE) in association with Solar Energy Society of India (SESI) and partnership with Solar Cookers International (SCI)
I have conducted laboratories for four year program of Bachelors in Mechanical Engineering
1. Thermodynamics (Second Year)
2. Heat Transfer (Third Year)
3. Energy Audit and Management (Final Year)
I worked as a Freelance consultant for CPC-Analytics
I wrote articles for the company's blog in sustainability and current news regarding energy and environment.
I have written articles in English and Marathi (mother tongue).
Marathi is spoken majorly (over 73 million population @2001) in Maharashtra.
Maharashtra (capital Mumbai) has population (114.2 million @2012) close to Mexico and GDP ($175.3 billion @2009) close to Singapore.
These informative and scientific articles in Marathi are written to educate and increase awareness about issues such as Climate Change, Sustainability, Solar Energy etc.
4. India-Hungry for Energy (In Marathi)
5. Climate Change (In Marathi)
April 2013 - October 2013
In completion of a Masters thesis and an internship, I worked as a research assistant at Concentrating Solar Power Group in Heat and Power Division in KTH Royal Institute of Technology, Stockholm, Sweden.
The project is performed under TESCONSOL umbrella, a KIC Innoenergy project of the European Institute of Technology in Co-operation with Gas Natural Fenosa and TOTAL as Industrial Partners.
As a part of research team to build up a tool to analyse the Solar Thermal power plants, a model was developed to analyse Direct Steam Generation (DSG) in Solar Central Receiver Tower system.
Ivanpah Solar Thermal Power Plant, being the latest in Concentrating Solar Power and based on Direct Steam Generation principle, is considered as the base-line of this work.
The thesis can be found hereSee More
June 2010 - May 2011
Designed two Solar thermal products for the company
1. Parabolic Trough Concentrator (PTC) A Concentrating Solar Technology Especially designed for the roof-top mounting The objective was to generate steam for the end usage of industrial processes
2. AKSON'S PENTA A Solar Water Heating Technology Incorporated with a specially designed five layered polymer tank to address the problem of salt depositions because of hard water
Member of a core team to realize technology exchange MoU and underwent a training for manufacturing of Scheffler Concentrator.
Business Development and strategies to launch two of the company's products.
Defined a Bachelor's thesis project of 'Shadow-Simulation of Scheffler Concentrators' for computer engineering students.
Cluster analysis of daily charging profiles of PEV drivers
Operational Efficiency analysis of charging stations
Environmental Impact analysis of charging behavior of PEV drivers
Tools: MATLAB, R, Python, Microsoft Excel
Goals of LCA:
To compare environmental impact of different clusters in terms of CO2 emissions (Global Warming Potential). Cluster membership signifies different charging behavior of PEV drivers. Different charging profiles have different electricity consumption at each hour. Further, grid mix at each hour corresponds to different environmental impact.
Intended Audience: The City of Rochester (Owner of the public charging stations) and the ChargePoint Inc. (operator of the public charging stations), and the PEV user subscribed to their services.
Usage: The results of this LCA can be used to understand which cluster has more environmental impact.
Scope of LCA
Five different cluster profiles were identified and used as basic building blocks for this LCA.
Functional Unit: Electricity Consumed per PEV driver in the respective cluster.
Reference Flow: The average electricity consumed daily per PEV driver in the respective.
Life cycle stages: Electricity generation based on grid mix (of upstate New York) at high voltage and the transmission to medium voltage grid and then to the charging stations (which work at medium voltage) is the basic stage of this LCA.
Flows: Emissions from the processes of electricity generation at different power plants.
Tools: SimaPro, Microsoft Excel.
A multi-variable analysis of the Energy Recovery Unit (ERU) at GIS to minimize energy transfer of the system subjected to the operating temperature.
The results showed that winter (February 2014) energy consumption was higher for the building than summer (July 2014).
Tools: What’s Best—Microsoft Excel based optimization tool.
Abstract: The overarching goal of this work was to reduce personal energy consumption and carbon footprints through behavioral levers, while ensuring significant system level gains. Laboratory experiments with real decision-makers comprise a key component and provide an empirical basis for developing decision-making tools for addressing the overarching goal.
The results with an adapted laboratory experiment of public goods game show that signaling with the willingness-to-pay (WTP) of the group led to a momentary convergence onto the equilibrium where a public good is provided.
Tools: Z-Tree, Microsoft Excel, Matlab
The smart and LEED Platinum certified building of the GIS is devised with a cutting-edge technology of two wheels (enthalpy wheel and dehumidification wheel) Energy Recovery Unit.
The energy savings (hourly, daily, monthly and yearly) were calculated using the system operations data recorded by building control system of RIT.
Tools: Microsoft Excel.
In this work, the Public Goods experiment was used to study the cooperation and sharing for an existence of a public good. An economic experiment was designed to test three different scenarios in order to reduce number of free-riders.
An effect of signaling mechanism as well as stated willingness-to-pay (WTP) and average monthly income (AMI) on decision making was also studied.
Signaling mechanism, in most cases, had a positive impact. Furthermore, WTP had more dominant effect than AMI on contribution. However, both Time Constraint and Endowment scenario could not be more efficient than that of Base Case scenario.
Tools: Z-Tree, Microsoft Excel.
In completion of a Master’s Thesis and an internship, this research was conducted at Concentrating Solar Power and Techno-Economic Analysis Group in Heat and Power Division in KTH Royal Institute of Technology, Stockholm, Sweden.
The project was performed under TESCONSOL umbrella, a KIC Innoenergy project of the European Institute of Technology in Co-operation with Gas Natural Fenosa and TOTAL as Industrial Partners. As a part of research team established to build up a tool to analyze the Solar Thermal power plants, a model was developed to analyze Direct Steam Generation (DSG) in Solar Central Receiver Tower system.
Ivanpah Solar Thermal Power Plant, being the latest in Concentrating Solar Power and based on Direct Steam Generation principle, was considered as the basic framework for this work.
The project was aimed to develop an applied model of the energy system of Malta by using LEAP, as a modeling tool. Four different scenarios were developed to analyze the Maltese energy system. The analysis was majorly based on Malta's Renewable Energy potential, energy security as well as vital policy measures such as European Union's (EU) goals to address climate change. Along with these, a voluntarism scenario was developed to incorporate modern day technologies such as Smart Grids.
The results were analyzed to put forth policy recommendations to allow maximum possible renewable energy sources in energy outlook of Malta and minimum GHG emissions.See More
Dr. Shivaji Ramalingam
Integrated Engineering Project (EMN, Nantes, France)
This work was performed to select and design an upgrading facility with adsorption columns for a medium scaled (200 m3/hr) biogas plant by using PROSIM as a simulation tool. Moreover, India's current policy developments were analyzed to develop a futuristic scenario for Biogas technology in India.
Adsorption columns were designed
Simulated using PROSIM, and calculations were performed using Matlab and Microsoft Excel
'Freeze Concentration' is used to separate two phases of a binary liquid such as milk, fruit juices, and alloys. Sugarcane juice—a binary liquid of sucrose (C12H22O11) and water is gradually cooled below the liquidus line; by running over a refrigerated plate where water in the juice crystallizes out as ice, along the liquidus line, up to a eutectic point, and leaves a semi-solid solution with higher concentration (Brix).
Furthermore, Freeze Concentration is an effective energy conservation technology, as the energy needed to freeze out water consumes lesser energy, than boiling it off. The remaining water content from the semi-solid jaggery at the end of the plate is then evaporated out. This entire process needs lesser energy than what otherwise would be required in boiling alone.
During this process, the thermal and physical properties of the fluid change with respect to time and space, both. Therefore, a comprehensive mathematical model (this work was presented at an international conference, MIMT 2011, in Singapore) was developed, using MATLAB, to analyze and study this intricate phenomenon. This model can be used as a handy tool to design an industrial scale system.
The experimentation and validation of this model were carried out using sugarcane as working fluid.
During these experiments, we realized an issue with dis-lodging with ice from the refrigerated plate. An innovative prototype was designed with a mechatronic system with piezo-electric crystals. The new technology is patented (410/MUM/2012)
M. D. Akole (Managing Director, AKSON'S Solar) and Prof. K. Sundaram (VIT, Pune, India)
The project was aimed to provide a solution to energy intensive industrial processes such as process heating. In India, many small and medium scale industries (SMEs) spend a hefty amount of their income for fuels (which are used for these processes). India being geographically situated in earth's Sun-Belt, concentrated solar can precisely be technology which can provide a feasible solution.
Few constraints, which were considered while defining the problem statement, were the initial cost, space, complexity of the operation, maintenance cost and manufacturing intricacies due to locally available resources.
This project was a Bachelor's thesis, first, and then it was further pursued to develop a commercial industrial product.
Scaling, inside water tanks in a Solar Water Heating system, because of hard water is a problem needed to be addressed to develop new market prospects for the company.
An Innovative five layered polymer tank was developed and tested and a very cost-effective product was developed to explore rural markets in India.
Product developed as a scaling immune system.
A commercial product for the company
Status: Granted: Awaiting Patent Number
Patent Application Number in Indian Patent Office: 410/MUM/2012
# Recent News: Final Patent specifications have been filed on February 14th, 2013.
1. Roger B. Chen, Katie McConky, Rachel Bosley, Ranjit R. Desai, "A Queueing Analysis of Operational Inefficiency in Public PEV Charging Stations", Presented in 97th Annual Meeting of the Transportation Research Board, Washington, DC, January 2018.
2. Ranjit R. Desai, Roger B. Chen, William Armington, "A Pattern Analysis of Daily Electric Vehicle Charging Profiles: Operational Efficiency and Environmental Impacts", Volume 2018, Article ID 6930932, 15 pages https://doi.org/10.1155/2018/6930932
3. Ranjit R. Desai, Roger B. Chen, William Armington, "A Pattern Analysis of Daily Electric Vehicle Charging Profiles: Operational Efficiency and Environmental Impacts", Presented in 96th Annual Meeting of the Transportation Research Board, Washington, DC, January 2017.
4. Abhishek B. Sahasrabudhe, Ranjit R. Desai, and Siddharth K. Jabade, "Modeling and Simulation of a Freeze Concentration Technique for Sugarcane Juice Concentration", Conference proceedings of 2nd International Conference on Mechanical, Industrial and Manufacturing Technologies 2011(MIMT 2011) vol. 1, pp. 303-306. (IEEE Catalog Number: CFP1123M-ART, ISBN: 978-1-4244-9265-7)
5. Abhishek B. Sahasrabudhe, Ranjit R. Desai, and Siddharth K. Jabade, "Freeze Concentration of Sugarcane Juice in a Jaggery Making Process-Modelling", International Journal of Modelling and Optimization vol. 1, no. 2, pp. 118-121, 2011. (DOI: 10.4028/www.scientific.net/AMM.110-116.2768)
6. Ranjit R. Desai, Abhishek B. Sahasrabudhe, Kalyana Sundaram, "A Review of Developments in Solar Parabolic Trough Concentrator Technology", Conference Proceedings 'Energetic 2010', Bangaluru, India.