Optimization of hydrogen production and system efficiency enhancement through exhaust heat utilization in hydrogen-enriched internal combustion engine

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135051 - 135051

Published: Feb. 1, 2025

Language: Английский

---

Quantitative analysis of the safe operating boundary of planar solid oxide fuel cells at high fuel utilization concerning concentration resistance

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 639, P. 236537 - 236537

Published: March 3, 2025

Language: Английский

---

Optimization of Ex/Energy Efficiencies in an Integrated Compressed Air Energy Storage System (CAES) using Machine Learning Algorithms: A Multi-Objective Approach based on Analysis of Variance

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135675 - 135675

Published: March 1, 2025

Language: Английский

---

Development of a new renewable energy system for clean hydrogen and ethanol production

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 306, P. 118304 - 118304

Published: March 21, 2024

The present research work aims to a uniquely designed renewable energy-based integrated system along with an equilibrium model for the processing of feedstock by following hybrid route thermochemical and biochemical ways. In this regard, Canadian maple leaves plastic wastes are selected as potential feedstocks co-pyrolysis syngas fermentation. influence process parameters on overall performance is investigated assessed. Also, several sensitivity analyses performed determine optimal operating that can generate maximum yields hydrogen ethanol. further thermodynamically in terms energetic exergetic approaches efficiencies. study shows molar flow ratio 1:1 wastes, temperature 1000°C temperature, pressure 1 bar appear be most suitable conditions net production capacities 7.43 tons/day 8.72 cold gas efficiency LHV produced found 57.23% 19.96 MJ/kg, respectively. efficiencies 30.98% 26.88%,

Language: Английский

---

Reviewing the dynamic modeling aspects of chemical looping hydrogen production

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 82, P. 1282 - 1299

Published: Aug. 8, 2024

This article thoroughly assesses the Chemical Looping Hydrogen Production (CLHP) process, aiming to enhance understanding of detailed dynamic simulations. It includes a concise historical overview chemical looping technology, emphasizing recent commercial applications like combustion engines. The discusses several cases pilot and sub-pilot scale investigations, along with critical insights identify issues surrounding commercialization this technology. Furthermore, review is extended analyze aspects process develop simulation model, including reactants, operating modes, kinetic parameters, models. Key materials such as reduction fuel, oxygen carriers solid supports are carefully chosen achieve target conversions net-zero carbon emissions. three-reactor system meticulously defined, focusing on closed-loop production's thermodynamic economic benefits. Detailed information provided reactions within each unit required regimes for continuous circulation. also examines mathematical modeling methods implementation determine gas-solid profiles at pellet reactor scales. Simulations derived from study's concepts can be refined through parameter modification optimal operation control analysis real-world industrial applications. Ultimately, contributes significantly CLHP, offering an economically viable solution sustainable hydrogen production.

Language: Английский

---

A clean hydrogen and electricity co-production system based on an integrated plant with small modular nuclear reactor

Energy, Journal Year: 2024, Volume and Issue: 308, P. 132834 - 132834

Published: Aug. 15, 2024

The present study aims to develop a novel configuration of hydrogen and electricity co-production based on small modular nuclear reactor (SMR) by synergistically integrating the Vanadium Chloride thermochemical (V–Cl) helium-closed Brayton cycles. For V–Cl cycle, steady-state simulation model is developed for first time in Aspen Plus environment. entire system assessed thermodynamically calculating exergy destruction rate efficiency major components employed different subsections (nuclear power production, clean supporting Rankine compression, storage) plant. Various parametric studies are conducted identify scope improvement evaluate suitable operating parameters that exhibit optimized performance. It found maximum H2 production achieved when VCl4 flow 3.6 kmol/h. A specific 9.63 g/kWh achieved. reduction Deacon reactors responsible highest lowest with value 155.46 kW 37.60 accounting 49 % 11.86 overall within cycle. share from secondary cycle compression train 16.48 %. results show an outlet helium pressure 15 bar, work output electrical peaked 4.6 MW 15.64 respectively. energy efficiencies proposed be 16.94 21.42

Language: Английский

---

Thermodynamic analysis of a solar-driven chemical looping hydrogen and electricity cogeneration system integrating solid oxide fuel cell

Energy Conversion and Management, Journal Year: 2025, Volume and Issue: 327, P. 119522 - 119522

Published: Jan. 30, 2025

Language: Английский

---

Co-generation of methanol and electricity using integrated concentrated solar power, calcium looping, and methane bi-reforming: Energy, exergy and economic analyses

Energy Conversion and Management, Journal Year: 2025, Volume and Issue: 327, P. 119585 - 119585

Published: Jan. 30, 2025

Language: Английский

---

Process development and simulation of a Novel Solar Energy Plant Integrated with Solid Oxide Fuel Cell, Hydrogen, Heat Recovery and Carbon Capture Systems

International Journal of Thermofluids, Journal Year: 2025, Volume and Issue: unknown, P. 101122 - 101122

Published: Feb. 1, 2025

Language: Английский

---

An improved sulfur iodine cycle for sour gas purification and hydrogen fuel production for better environment

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 124921 - 124921

Published: March 29, 2025

The conventional sulfur-iodine (S-I) thermochemical cycle developed for sour gas purification and hydrogen production from H2S stoichiometrically produces 2 moles of H2. present work aims to develop an improved cycle, here called the five-step that replaces direct sulfur oxidation with a reaction between metallic oxygen carrier (OC) elemental S produce hydrogen. This new does not only more H2, but also extra H2SO4. process is followed by hydrolysis regenerate OC additional Hydrogen sulfide flue considered major feedstock system. stoichiometry studied ensure all reactants follow cyclic pathways. then modeled in Aspen Plus simulation software under steady-state conditions, comprehensive thermodynamic analysis entire system conducted using energy exergy methods, evaluating efficiencies, as well destruction rates components. Furthermore, several parameters are thoroughly examined better investigate peformance. proposed demonstrates significant improvement yield, 4 H2 per mole H2S. represents 100 % increase efficiency compared S-I which either 1 or Claus reactors exhibit highest accounting 33.19 16.69 total rates, respectively. efficiencies CBD section found be 72.89 48.54 overall configuration 74.72 62.46

Language: Английский

---