Article
Thermodynamics
Xiaojing Sun, Linlin Liu, Yachao Dong, Yu Zhuang, Jiao Li, Jian Du, HongChao Yin
Summary: This study proposes an enhanced CACRS-ORC integrated system for better utilization of waste heat for cooling and power generation. Through a multi-objective optimization method aiming to minimize the total annualized cost (TAC) and total exergy destroy (Extotal destroy) simultaneously, the optimal configuration and operating parameters of the integrated system are determined. Sensitivity analysis also reveals the impact of key parameters on the structural configuration and thermo-economic performances.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Ali H. Abdulrahim, Jacob N. Chung
Summary: In freshwater-scarce coastal regions, cogeneration power and desalination plants are used to meet increasing water demand. Gas turbine driven CPDPs suffer a performance drop in summer due to high-temperature air intake. Evaporative cooling has been proven as an effective solution, while waste heat or solar energy-fired absorption refrigeration systems have also been proposed. Energy/exergy analysis on a conceptual plant shows that integrating EC and AR systems can increase energy utilization factor and exergetic efficiency, with a slight increase in in-house water consumption and reduced freshwater exports. Payback periods for integrating EC and AR systems are calculated at 1.84 and 5.70 years respectively, with emissions savings ranging from 139 to 187 million kg of CO2 annually.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Wei Yu, Huitao Wang, Zhong Ge
Summary: The study focused on the performance and impact parameters of a novel combined power and cooling system based on the organic Rankine cycle and the ejector refrigeration cycle. Results showed that optimizing system performance and selecting the appropriate working fluid are crucial for improving system efficiency. The system can achieve lower product total cost and corresponding power output within the range of 300-700 kW.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Ali M. M. Qureshy, Ibrahim Dincer
Summary: A thermodynamic modeling is conducted on a newly developed system for hot water, cooling, and electricity production. The parametric studies reveal the maximum useful output power of the turbine to be 5991 kW and the highest heat cooling rate of the evaporator to be 4397 kW.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Thermodynamics
Rahim Zahedi, Sareh Daneshgar
Summary: This article proposes a hybrid cycle capable of producing thermal and refrigeration powers simultaneously. Exergy analysis and Parametric analysis are used to optimize and investigate the performance of the cycle. The study finds that the most Exergy dissipations occur due to irreversibilities, with ejectors playing a significant role in this process.
Article
Thermodynamics
Alibakhsh Kasaeian, Armin Shamaeizadeh, Bardia Jamjoo
Summary: This study focuses on the combination of ejector refrigeration cycle and Rankine cycle to enhance the overall performance of the plant. The combination leads to an increase in plant efficiency and can be applied in energy production, cooling, and heating.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Jie Ren, Zuoqin Qian, Chunguang Fei, Ding Lu, Yincai Zou, Chen Xu, Lu Liu
Summary: Integrating biomass energy into existing fossil fuel power plants is a practical solution for energy shortages and environmental problems. A novel combined cooling and power system based on the organic Rankine cycle and absorption refrigeration cycle is proposed for waste heat recovery. Comprehensive analysis shows promising thermodynamic, exergoeconomic, and exergoenvironmental performance. Parametric analysis reveals the impact of various factors on system efficiency and cost. A tri-objective optimization is conducted, resulting in an optimal solution for engineering practice.
Article
Thermodynamics
Hayder A. Dhahad, Samareh Ahmadi, Mahidzal Dahari, Hadi Ghaebi, Towhid Parikhani
Summary: The study introduces an innovative cogeneration power and cooling system, evaluating its practicality from energy, exergy, and exergoeconomic perspectives. It shows that higher energy productivity and efficiency can be achieved by increasing the ammonia concentration, SOFC input temperature, and evaporation temperature.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Engineering, Chemical
William L. Luyben
Summary: The widespread use of compression refrigeration in modern society is an example of a societal need that was unheard of two centuries ago. Ancient civilizations developed and flourished in hot climates without any widespread use of methods to provide more comfortable conditions. Modern society now considers it virtually a constitution right to have air conditioning in all homes, schools, office buildings and transportation vehicles. Modern food industries are dependent on refrigeration for preservation and distribution of many food products.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Thermodynamics
Saman Khalilzadeh, Alireza Hossein Nezhad, Alessandro Romagnoli, Bakytzhan Akhmetov
Summary: This study examines the integration of an absorption heat transformer cycle in CCHP systems, demonstrating through comparisons of different configurations and system performance parameters the advantages of the proposed hybrid system in terms of energy consumption, environmental impact, and economic benefits.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Masoud Khalili, Fazele Karimian Bahnamiri, Mehdi Mehrpooya
Summary: This research proposes a novel integrated structure for the cogeneration of electricity and renewable syngas, using solid oxide cells and a solar power cycle. Mathematical approaches and comprehensive validations show the relationships between the efficiencies of the fuel cell unit and electrolyzer unit and the overall plant efficiency, as well as the effects of different voltages and pressures on the plant efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Xiangyang Liu, Kun Hou, Maogang He
Summary: A novel self-condensation supercritical carbon dioxide (sCO2) Rankine cycle system is proposed, which utilizes a lithium bromide-water absorption refrigeration cycle to utilize waste heat and provides a cold source. The new system avoids large compression power consumption and the need for an extra low-temperature cold source. The integrated system has lower pressurization energy consumption and levelized cost of electricity (LCOE), but higher thermal efficiency compared to the stand-alone regenerative sCO2 Brayton cycle system.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Francesca Ceglia, Elisa Marrasso, Carlo Roselli, Maurizio Sasso
Summary: This paper aims to assess the feasibility of a Renewable Energy Community in Northern Italy in terms of energy and environmental impact. The analysis is based on real data on electricity consumption and thermal energy requests. Different devices, including a biomass cogenerator, a small hydro power plant, and photovoltaic systems, were selected and analyzed. The results show that the community can increase its use of renewable electricity by 20.3%, meet 68.1% of its thermal energy needs through biomass utilization, and reduce carbon dioxide emissions by 18.5%.
Article
Thermodynamics
Amit Bhowmick, Balaram Kundu
Summary: A new system for waste heat recovery process, which combines cooling and power cycle, is proposed in this study. The thermodynamic and economic viability of the system is comprehensively analyzed. The results show that the combustion chamber is the major source of irreversibility and there is potential for improvement. A parametric study is conducted to assess the effect of major design parameters, and a multi-objective optimization is performed to determine the overall exergy efficiency and total product cost. The findings provide insights for practical applications and cost-effectiveness.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Shaofei Shi, Yufei Wang, Youlei Wang, Xiao Feng
Summary: This paper introduces a new cascade cooling system considering waste heat recovery via ORC and AR. A case study demonstrates that using different cooling methods can reduce the total annual cost, with ORC and AR showing economic advantages in different scenarios.
Article
Energy & Fuels
Mike U. Ajieh, Kesiena Owebor, Lawrence C. Edomwonyi-Otu, Izuchukwu F. Okafor
Summary: The energy potentials of Elephant and Spear grasses were investigated through proximate and ultimate analysis. Results suggest that perennial grasses have lower energy content compared to fuelwood, but densification is needed if they are to be used as an alternative energy source.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Energy & Fuels
Zafar A. Khan, Muhammad Imran, Abdullah Altamimi, Ogheneruona E. Diemuodeke, Amged Osman Abdelatif
Summary: In addition to zero-carbon generation, the decreasing cost of renewable energy sources is enabling the increased use of distributed-generation sources. However, without appropriate design and understanding of the load nature, renewable energy sources can be unreliable and expensive. Limited research has been done on designing small-scale hybrid energy systems for irrigation pumping, hence this paper presents a comprehensive feasibility analysis for an off-grid hybrid renewable energy system for irrigation in Sudan. The results suggest that the selection of the system depends on the cost, wind speed volatility, solar radiation, and system size, and currently, hybridization is not the primary option at most sites.
Article
Energy & Fuels
Zafar A. Khan, Muhammad Imran, Jamal Umer, Saeed Ahmed, Ogheneruona E. Diemuodeke, Amged Osman Abdelatif
Summary: Climate change is causing more frequent droughts, leading to water scarcity and affecting crop yields. Underground pumping systems can provide water for crops, but the energy required is expensive and harmful to the environment. Developing renewable energy sources to power water pumping systems is crucial for improving crop yields and reducing carbon emissions, especially in regions like northern Sudan that are more vulnerable to drought.
Article
Thermodynamics
K. Owebor, E. O. Diemuodeke, T. A. Briggs
Summary: The study investigated the thermo-economic and environmental analysis of an integrated power system with carbon capture and storage, modeling key parameters and proposing CO2 capture and enhanced oil recovery strategies. Cost analysis showed a total cost of $186 million, CO2 avoidance cost of $110 per tonne, levelized cost of energy at $0.123 per kWh, and payback period of 5.2 years. The study also explored parametric simulations and highlighted the potential impact on energy policy and climate action landscapes.
Review
Green & Sustainable Science & Technology
K. Owebor, E. O. Diemuodeke, T. A. Briggs, M. Imran
Summary: Globally, there is a rising demand for electricity, but Nigeria is struggling to meet its increasing demand with low per capita electricity consumption. The country has potential in untapped renewable energy sources, but it is primarily reliant on fossil and hydro-power plants. The federal government's energy policies and political will are key in driving sustainable socio-economic development through improved energy access.
Article
Energy & Fuels
Kesiena Owebor, Ogheneruona E. Diemuodeke, Tobinson A. Briggs, Ogheneakpobo J. Eyenubo, Oreva J. Ogorure, Michael O. Ukoba
Summary: This paper presents a multi-criteria optimization of integrated power systems. It proposes, models, and analyzes five power configurations that combine various cycles and technologies. The proposed plants are further subjected to TOPSIS optimization and the results suggest the most ideal solution. This research highlights the importance of incorporating carbon capture technology and retrofitting existing power plants with more efficient and environmentally friendly technologies.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
Mike Uche Ajieh, Nosakhare Andrew Amenaghawon, Kesiena Owebor, Oghenero Henry Orugba, Esua Bassey Bassey
Summary: Water-soluble polymers are used to improve drilling operations, but excessive utilization of these additives may have negative implications on drilling outcomes, increasing the equivalent circulating density may lead to formation damage.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Constantinos Vassiliades, Ogheneruona Endurance Diemuodeke, Eric Boachie Yiadom, Ravita D. Prasad, Wassim Dbouk
Summary: This study examines the cooking space of the Global South, particularly in rural communities, and proposes alternative energy sources, technologies, and policies for clean cooking services. By conducting a comparative study across Fiji, Ghana, and Nigeria, the study aims to harmonize stakeholders and present policy pathways for adopting clean cooking services in rural communities for sustainable development. A government-driven, followed by incentive-driven and private-sector-driven business model is proposed for the clean cooking business in rural areas.
Review
Energy & Fuels
Nnaemeka Vincent Emodi, Chukwumerije Okereke, Fidelis Ibiang Abam, Ogheneruona Endurance Diemuodeke, Kesiena Owebor, Uchenna Alexander Nnamani
Summary: Decarbonising the transport sector in the Global South is crucial for achieving net-zero emissions by mid-century. This study investigates the progress and challenges of decarbonisation in the transport sector, highlighting the need for special mechanisms to address issues such as revenue generation, funding, competition for alternative fuels, and impacts on low-income consumers. The study also identifies cost-effective options and knowledge gaps for future research.
ENERGY STRATEGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
M. U. Ajieh, H. I. Owamah, L. C. Edomwonyi-Otu, G. I. Ajieh, P. Aduba, K. Owebor, S. C. Ikpeseni
Summary: The Water Boiling Test (WBT) was conducted to measure carbon monoxide (CO) and particulate matter (PM2.5) emissions. A laboratory setup, called the Laboratory Emission Monitoring System (LEMS), was used to model a typical rural kitchen environment, and a WBT tailored tool for Controlled Cooking Test (CCT) was employed. Five different types of cookstoves were tested, and the CO emissions were represented by categories such as CO-unvented natural draft (COUN) and CO-general cookstove (COGE). Similarly, the PM emissions were represented as PM-unvented natural draft (PMUN) and PM-general cookstove (PMGE). The study found that COGE and CODS had the lowest emissions, while COTH had the highest. Similarly, PMTH had the highest PM emissions. The study highlights the importance of improving cookstove design and ventilation to improve health outcomes in low-income rural areas.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Agricultural Engineering
M. O. Ukoba, E. O. Diemuodeke, T. A. Briggs, M. Imran, K. Owebor, C. O. Nwachukwu
Summary: Despite challenges, Nigeria has a potential to utilize biomass resources from forests and crop residues for clean energy generation. The estimated energy potential for crop and forest residues is 3477.02 and 685.90 PJ/yr respectively, indicating the significance of biomass energy in meeting the country's energy demands. The study also proposes policy pathways and biomass-to-energy conversion technologies to promote the penetration of biomass energy in Nigeria.
BIOMASS & BIOENERGY
(2023)
Review
Energy & Fuels
Fidelis Ibiang Abam, Chinedum Oscar Nwachukwu, Nnaemeka Vincent Emodi, Chukwumerije Okereke, Ogheneruona E. Diemuodeke, Abdulhameed Babatunde Owolabi, Kesiena Owebor, Dongjun Suh, Jeung-Soo Huh
Summary: The buildings sector plays a significant role in global energy utilization and carbon emissions. This study examines low-carbon buildings in selected global south regions under deep decarbonization scenarios. The findings highlight the importance of population, gross domestic product, dwelling characteristics, and urbanization as critical drivers of emissions in these regions. It emphasizes the need for total investment from the private and public sectors to achieve decarbonization in the building sector.
FRONTIERS IN ENERGY RESEARCH
(2023)
Proceedings Paper
Energy & Fuels
Ogheneruona E. Diemuodeke, Kesiena Owebor
Summary: This study investigates the utilization of syngas from solid wastes and natural gas, combined with carbon capture technology, to reduce greenhouse gas emissions from power plants and landfills. The results demonstrate that an optimal syngas and natural gas composition of 0.47 and 0.53, respectively, can generate 208.8 MW of electrical power. The system's technical efficiency is 43%, with a carbon dioxide emission factor of 0.029 tonnes per MWh and a CO2 transportation rate of 612.2 kilotonnes per year. The proposed power system is estimated to cost USD 236.7 million, with a unit energy cost of 0.141 USD per kWh, a CO2 avoidance cost of 110 USD per tonne of CO2, and a payback period of 5.2 years. The study also suggests incorporating hydrogen energy storage for reliable electricity supply throughout the year, but further research is needed to optimize its integration into the proposed power plant.
PROCEEDINGS OF THE INTERNATIONAL RENEWABLE ENERGY STORAGE CONFERENCE, IRES 2022
(2023)
Article
Energy & Fuels
J. C. Ofodu, O. A. Ophori, E. O. Diemuodeke
Summary: The study focuses on the thermoeconomic analysis of a proposed combined cooling, heating and power (CCHP) energy system for agrarian communities based on agro-wastes. It shows the feasibility of generating electricity and solving the perishable farm produce issue in Nigeria.
INTERNATIONAL JOURNAL OF AMBIENT ENERGY
(2021)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)
