Design of a renewable energy system with battery and power-to-methanol unit

Riezqa Andika,김영,Choa Mun Yun,윤석호,이문용 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.1

An energy storage system consisting of a battery and a power-to-methanol (PtM) unit was investigated to develop an energy storage system for renewable energy systems. A nonlinear programming model was established to optimize the energy storage system. The optimal installation capacities of the battery and power-to-methanol units were determined to minimize the cost of the energy system. The cost from a renewable energy system was assessed for four configurations, with or without energy storage units, of the battery and the power-to-methanol unit. The proposed model was applied to the modified electricity supply and demand based on published data. The results show that value-adding units, such as PtM, need be included to build a stable renewable energy system. This work will significantly contribute to the advancement of electricity supply and demand management and to the establishment of a nationwide policy for renewable energy storage

Co-electrolysis for power-to-methanol applications

Andika, Riezqa,Nandiyanto, Asep Bayu Dani,Putra, Zulfan Adi,Bilad, Muhammad Roil,Kim, Young,Yun, Choa Mun,Lee, Moonyong Elsevier 2018 RENEWABLE & SUSTAINABLE ENERGY REVIEWS Vol.95 No.-

<P><B>Abstract</B></P> <P>This article reviews the issues facing co-electrolysis and its applications to the power-to-methanol process. Co-electrolysis is an attractive process for syngas production that uses excess generated electricity. In extended applications, syngas produced from co-electrolysis can be used for various applications like methanol production. In this review, the power-to-methanol process is comprehensively discussed from a process systems engineering viewpoint. The subjects discussed include the reason to choose methanol as a final product, the latest progress in power-to-methanol projects, and a comparison of methanol production from H<SUB>2</SUB>-CO (from co-electrolysis) and H<SUB>2</SUB>-CO<SUB>2</SUB> mixtures (from electrolysis). Syngas production pathways from co-electrolysis and electrolysis are further investigated, and potential power-to-methanol schemes using co-electrolysis are deployed. Lastly, research directions are proposed to accelerate power-to-methanol commercialization.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Power-to-methanol (PtM) technology using co-electrolysis is intensively reviewed. </LI> <LI> The PtM technology regulates fluctuate power supply from renewable energy and consumer demand. </LI> <LI> Co-electrolysis applications for PtM process are comprehensively discussed. </LI> <LI> A comparison of methanol productions from co-electrolysis and from electrolysis is done. </LI> <LI> Start-up time and ramping flexibility are critical to commercialize the PtM process. </LI> </UL> </P>

Techno-economic study of enhanced absorber–regenerator configurations for improving an industrial Sulfinol-M-based acid gas removal processes

Andika, Riezqa,Nhien, Le Cao,Lee, Moonyong Elsevier 2017 Journal of industrial and engineering chemistry Vol.54 No.-

<P><B>Abstract</B></P> <P>In this study, the rigorous simulation and design of an industrial Sulfinol-M-based acid gas removal (AGR) process was developed. All simulations were performed using Aspen HYSYS with extended NRTL activity coefficient model for the liquid phase and the Peng–Robinson state equation for the vapor fugacity coefficients. The simulation results from VMGSim and Aspen HYSYS were compared with design data from an integrated gasification combined cycle power plant. Several enhanced absorber–regenerator configurations were presented to improve AGR process efficiency. Sustainability analysis was conducted to assess these process alternatives in terms of energy requirements, costs, and environmental impacts. The results showed that the proposed self-heat recuperation configuration could reduce the energy requirements, total annual costs, carbon footprint by 74.7%, 40.1%, and 48.9%, respectively, compared with the conventional configuration.</P> <P><B>Highlights</B></P> <P> <UL> <LI> An industrial Sulfinol-M-based AGR process was simulated and validated. </LI> <LI> A cost-effective absorber–regenerator design was proposed for AGR process. </LI> <LI> Sustainability analyses were carried out to evaluate configuration alternatives. </LI> <LI> The proposed process could save up to 40.1% of total annual cost. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Proposed self-heat recuperative AGR process using Sulfinol-M as a solvent in an IGCC power plant.</P> <P>[DISPLAY OMISSION]</P>

Techno-economic assessment of technological improvements in thermal energy storage of concentrated solar power

Andika, Riezqa,Kim, Young,Yoon, Seok Ho,Kim, Dong Ho,Choi, Jun Seok,Lee, Moonyong Elsevier 2017 SOLAR ENERGY -PHOENIX ARIZONA THEN NEW YORK- Vol.157 No.-

<P><B>Abstract</B></P> <P>The technological and economic impact of design changes in thermal energy storage of concentrated solar power (CSP) systems is assessed. It is shown that the system costs change with the types of storage tanks and also that the operation temperature is limited by the thermal properties of the thermal storage medium. In addition, the cost of energy can be substantially reduced by replacing the conventional power cycle with more advanced power cycles, such asa supercritical carbon dioxide power cycle. Using two types of thermal storage tanks and two thermal storage media, cases are generated incorporating combinations of the design options. A sensitivity analysis is used to investigate the impacts of each technological improvement. The results of this work will contribute to predicting the impact of research and improving the economics of the CSP system.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The techno-economic analysis was done on the integrated concentrated solar power system. </LI> <LI> Technological improvements in thermal storage are assessed based on process simulation. </LI> <LI> The cost of energy can be largely reduced by changing the thermal storage media and tank type. </LI> <LI> The required amount of salt can be saved at wider temperature range by reducing pumping requirement. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Techno-economic study of enhanced absorber–regenerator configurations for improving an industrial Sulfinol-M-based acid gas removal processes

Riezqa Andika,Le Cao Nhien,이문용 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.54 No.-

In this study, the rigorous simulation and design of an industrial Sulfinol-M-based acid gas removal (AGR) process was developed. All simulations were performed using Aspen HYSYS with extended NRTL activity coefficient model for the liquid phase and the Peng–Robinson state equation for the vapor fugacity coefficients. The simulation results from VMGSim and Aspen HYSYS were compared with design data from an integrated gasification combined cycle power plant. Several enhanced absorber–regenerator configurations were presented to improve AGR process efficiency. Sustainability analysis was conducted to assess these process alternatives in terms of energy requirements, costs, and environmental impacts. The results showed that the proposed self-heat recuperation configuration could reduce the energy requirements, total annual costs, carbon footprint by 74.7%, 40.1%, and 48.9%, respectively, compared with the conventional configuration.

Does lower energy usage mean lower carbon dioxide emissions? - A new perspective on the distillation process

Riezqa Andika,이문용,Yuli Amalia Husnil 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.7

Although fossil fuels play an important role as the primary energy source that currently cannot be replacedeasily with other energy sources, their depletion and environmental impact are becoming major concerns. Improvementsin energy efficiency are believed to solve both problems simultaneously. We examined the relationships betweenthe improvement in energy efficiency, energy usage and CO2 emissions in industry, especially in the distillation process. The energy efficiency improvement of dimethyl ether (DME) purification performed with dividing-wall column distillation(DWC) and acetic acid recovery performed with mechanical vapor recompression (MVR) were evaluated byrecalculating the amount of fuel burnt and its CO2 emission. The results showed that the paradigm of lower energybeing directly proportional to lower CO2 emissions is not entirely correct. To avoid this confusion, a tool for examiningthe uncommon behavior of various systems was developed.

Operability Study of Syngas Treatment Process in IGCC Power Plant

Riezqa Andika,Bonggu Choi,Yuli Amalia Husnil,Le Cao Nhien,Jinhee Jeon,Moonyong Lee 제어로봇시스템학회 2014 제어로봇시스템학회 국내학술대회 논문집 Vol.2014 No.5

Optimal plant-wide control of the wet sulfuric acid process in an integrated gasification combined cycle power plant

Husnil, Yuli Amalia,Andika, Riezqa,Lee, Moonyong Elsevier 2019 Journal of process control Vol.74 No.-

<P><B>Abstract</B></P> <P>This paper discusses plant-wide control system design of the wet sulfuric acid (WSA) process, which is part of an integrated gasification combined cycle power plant. The regulatory control structure, which ensures energy efficiency and operational stability, was designed by addressing the requirements and constraints of each key unit in the process. We used sensitivity analysis and simple stoichiometric calculation to obtain optimum set points for the controlled variables, which has a direct effect on the energy usage and production rate in the WSA process. In this work, we proposed several controller schemes that ensure efficiency and stability of the WSA process. The results of this work will contribute to improving the process efficiency, thereby facilitating energy efficient and stable operation of the WSA process.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Plant wide control of wet sulfuric acid (WSA) process in IGCC power plant was studied. </LI> <LI> A simple procedure to calculate minimum required hot air to combustor was utilized. </LI> <LI> Sensitivity analysis was implemented to find optimum set-points of major controlled variables of WSA process. </LI> <LI> Several controller schemes were proposed in achieving enhanced energy efficiency and operational stability. </LI> </UL> </P>

Conceptual designs of integrated process for simultaneous production of potable water, electricity, and salt

Husnil, Yuli Amalia,Harvianto, Gregorius Rionugroho,Andika, Riezqa,Chaniago, Yus Donald,Lee, Moonyong Elsevier 2017 Desalination Vol.409 No.-

<P><B>Abstract</B></P> <P>The main aim of this study was to conduct preliminary analysis on the performance of two conceptual designs that integrate the production of potable water, electricity, and salt. We used reverse osmosis (RO), pressure-retarded osmosis (PRO), and electrodialysis (ED) to produce potable water, electricity, and salt, respectively. The objective of the analysis is to observe how the relative positions of RO and PRO in the integrated process affect the five key parameters, i.e. the total dissolved solids (TDS) of potable water, permeate rate, the total energy requirement of the RO and ED units, net delivered power, and salt potential. We simulated each integrated design using previously validated mathematical expressions of RO, PRO, and ED. We found that the net delivered power is higher when the RO unit is located before the PRO unit. The same sequence also results in lower energy requirement for producing potable water, although the permeate rate is smaller than that of the rival sequence. On the other hand, the salt potential is not affected by the relative positions of the RO and PRO units.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Integrated process for the production of potable water, electricity, and salt </LI> <LI> Process simulation analysis for the integrated process system </LI> <LI> The effects of different water sources and temperature in the process are studied. </LI> <LI> The design proposed represents a feasible option for the production of water, electricity, and salt </LI> </UL> </P>

Attitude Control of a Full Vehicle in Cornering

Rodrigue Tchamna,Yuli Amalia Husnil,Riezqa Andika,Moonyong Lee 제어로봇시스템학회 2014 제어로봇시스템학회 국내학술대회 논문집 Vol.2014 No.5