Article
Thermodynamics
Fei-yang Zhang, Yong-qiang Feng, Zhi-xia He, Jing-wei Xu, Qiang Zhang, Kang-jing Xu
Summary: This study proposes a small-scale biomass-fired ORC-CHP system with a rated power of 30 kW and discusses its thermo-economic optimization. The results show that there are differences in performance between model A and model B, with model B having higher thermodynamic performance and slightly lower economic performance.
Article
Green & Sustainable Science & Technology
Cem Oksel, Ali Koc
Summary: Converting waste heat into electricity has attracted the attention of scientists for its potential to improve energy efficiency and reduce environmental impacts. This study developed a heat recovery system using the Kalina Cycle and Organic Rankine Cycle for a waste recycling factory in Turkey, achieving efficient recovery of waste heat energy.
Article
Thermodynamics
Shiyang Teng, Meiwei Wang, Huan Xi, Shuqi Wen
Summary: ORC-CHP systems have been widely used for recovering low-grade heat, and in this study, the economy of these systems is optimized and compared. Results show that the SS/CS system has the highest profit ratio of investment under the considered working conditions. Additionally, the cost of heat exchangers plays a significant role in all three systems, leading to low electrical efficiency and high thermal efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Review
Engineering, Environmental
Mohammad Ja'fari, Muhammad Imran Khan, Sami G. Al-Ghamdi, Artur J. Jaworski, Faisal Asfand
Summary: In energy intensive industries, the use of ORC technology for waste heat recovery can enhance energy efficiency, reduce carbon emissions, and provide a solution for energy saving in the iron and steel sector, contributing to the fight against climate change.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Yong-qiang Feng, Fei-yang Zhang, Jing-wei Xu, Zhi-xia He, Qiang Zhang, Kang-jing Xu
Summary: Biomass-fired organic Rankine cycle (ORC) systems are a viable technology for carbon-neutral power production. This study conducted a parametric analysis and multi-objective optimization of a biomass-fired ORC-CHP system under three operation strategies. The results showed that system A is the preferred operation strategy due to its moderate performance.
Article
Thermodynamics
Liuchen Liu, Jinlu Wu, Fen Zhong, Naiping Gao, Guomin Cui
Summary: This paper introduces a competitive combined heat and power system that integrates the organic Rankine cycle with the heat pump cycle using a built-in evaporator, achieving efficient waste heat recovery. Experimental results show significant energy and economic advantages of the system, with evaporation temperature having a notable impact on system performance.
Article
Thermodynamics
Jin Wu, Ruihua Li, Yi Xiang, Shuai Wang, Longfei Wang, Qing Li
Summary: This study proposes a solar-driven combined heating and power (CHP) system integrated with an organic Rankine cycle (ORC) and a ground source heat pump (GSHP). A quantitative sustainability assessment method is used to evaluate the sustainability performance of the CHP system. The results indicate that the solar-driven CHP system with a heat distribution ratio of 75% has a higher composite sustainability index (0.768).
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Michael Marion, Hasna Louahlia
Summary: The combination of an ORC with a VCC was studied through the analysis of performance under various operating conditions for different fluids. The results indicate the required diameter ratios and the possibility of using two identical compressors in special cases, with one serving as a compressor and the other as an expander.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2021)
Article
Thermodynamics
Jui-Ching Hsieh, Chun-Chieh Lai, Yen-Hsun Chen
Summary: The performance and economy of a waste heat recovery system with a fin tube heat exchanger and an organic Rankine cycle system were investigated. It was found that the temperature and mass flow rate of the flue gas had positive and negative effects on the output power, while the evaporation temperature had a positive effect on the effectiveness of the heat exchanger. Furthermore, the system performance and economy can be improved by adjusting the flow rate of the working fluid through the expander.
Article
Thermodynamics
Changxin Liu, Huaan Li, Wenxiang Ye, Jianhao Liu, Huibin Wang, Minyi Xu, Xinxiang Pan, Zhuofan Mao, Shuojia Yang
Summary: The TEG-ORC combined cycle system has successfully overcome the limitations of single waste heat utilization methods, allowing for multi-stage utilization of ship waste heat and improved waste heat utilization rates.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2021)
Article
Thermodynamics
Fabio Fatigati, Davide Di Battista, Roberto Cipollone
Summary: The study examines the concept of permeability in ORC-based waste heat recovery systems through experimental and theoretical approaches. It identifies key factors influencing this parameter and groups them into dimensionless factors to guide design and outline an easily implementable model-based control of the maximum plant pressure. The study validates these findings through a comprehensive mathematical model of the recovery unit tested on a fully instrumented ORC test bench, yielding a maximum recovered power of 3 kW and efficiency of 4.4%.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Guangli Fan, Yingjie Gao, Hamdi Ayed, Riadh Marzouki, Yashar Aryanfar, Fahd Jarad, Peixi Guo
Summary: The study shows that adding a recovery section to a single flash geothermal cycle can significantly improve system performance, increasing thermal efficiency, exergy efficiency, and overall output, while also reducing LCE from an economic perspective.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Jinbo Qu, Yongming Feng, Yuanqing Zhu, Song Zhou, Wenping Zhang
Summary: In the context of global decarbonization, there is increasing focus on improving the energy efficiency of marine power plants, with the use of a high-efficiency waste heat recovery system that can generate up to 1,079.1 KW of power at 100% load. The system demonstrated stable operation and high thermal efficiency and exergy efficiency at 90% load. Further techno-economic evaluation showed a payback period of 5.2 years for the system.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Physics, Multidisciplinary
Saeed Khojaste Effatpanah, Mohammad Hossein Ahmadi, Seyed Hamid Delbari, Giulio Lorenzini
Summary: This paper presents a comprehensive emergy-based exergoeconomic method for studying the biomass combustion waste heat recovery organic Rankine cycle (BCWHR-ORC), considering thermodynamics, economics, and sustainability aspects. The analysis results reveal the performance characteristics of the system and provide insights for its overall efficiency and sustainability.
Article
Thermodynamics
Hong-Hu Zhang, Ming-Jia Li, Yong-Qiang Feng, Huan Xi, Tzu-Chen Hung
Summary: The feasibility of the combined steam Rankine cycle-Organic Rankine cycle system was investigated and verified through comparing and screening different working fluids. It was found that the addition of a regenerator can effectively improve the NPI of the ORC system. The combined system using ammonia and R600 as working fluid showed the largest NPI values.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Adrian Mota-Babiloni, Pau Gimenez-Prades, Pavel Makhnatch, Jorgen Rogstam, Adrian Fernandez-Moreno, Joaquin Navarro-Esbri
Summary: The F-gas phase-down schedules will reduce the use of HFCs in refrigeration systems in the short term. In addition to refrigerant substitution, configuration modifications can be considered to increase energy efficiency.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2022)
Article
Thermodynamics
Ali Khalid Shaker Al-Sayyab, Joaquin Navarro-Esbri, Adrian Mota-Babiloni
Summary: This study evaluated a novel compound PV/T waste heat driven ejector-heat pump system for data center cooling and waste heat recovery. Results showed remarkable overall performance enhancement for all investigated refrigerants, with R515B exhibiting the most pronounced improvement.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2022)
Article
Thermodynamics
Ali Khalid Shaker Al-Sayyab, Joaquin Navarro-Esbri, Angel Barragan-Cervera, Sarah Kim, Adrian Mota-Babiloni
Summary: This study presents an experimental comparison of low GWP refrigerants in vapour compression cooling and heating systems. The results show that R513A has the highest COP in cooling mode and the highest heating capacity in heating mode compared to the other refrigerants. The internal heat exchanger (IHX) has a positive influence on the refrigerating effect for all refrigerants.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Angelo Maiorino, Adrian Mota-Babiloni, Fabio Petruzziello, Manuel Gesu Del Duca, Andrea Ariano, Ciro Aprea
Summary: This paper proposes a model for a hybrid refrigerated van that combines photovoltaic panels and electric batteries to decrease greenhouse gas emissions. By comparing different technologies and considering various delivery scenarios, the model shows a reduction of 20% in CO2 emissions. However, the long payback period is still a challenge due to the necessary investment and current fuel and electricity prices.
Article
Environmental Sciences
Ali Khalid Shaker Al-Sayyab, Joaquin Navarro-Esbri, Angel Barragan-Cervera, Adrian Mota-Babiloni
Summary: A comprehensive techno-economic evaluation was conducted on an innovative compound ejector-heat pump system driven by PV/T waste heat. The system aims to simultaneously cool a data center and recover waste heat for district heating, reducing greenhouse gas emissions. The simulation results showed significant differences in the overall system coefficient of performance (COP) and electricity consumption reduction for different refrigerants, with the shortest payback period being 6.3 years.
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
(2022)
Article
Thermodynamics
Cosmin-Mihai Udroiu, Adrian Mota-Babiloni, Joaquin Navarro-Esbri
Summary: This paper investigates the operational and energy performance of different cycle configurations in ultralow-temperature freezers and proposes an optimal configuration. The results show that liquid and vapor injection cascade configurations are the most energy-efficient. The optimization of the intermediate cascade temperature is crucial for energy performance.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
J. A. Montanez-Barrera, J. M. Barroso-Maldonado, A. F. Bedoya-Santacruz, Adrian Mota-Babiloni
Summary: In this study, a new method called correlated-informed neural networks (CoINN) is proposed for predicting the pressure drop of zeotropic mixtures in micro-channels. The method improves the performance and generalization capabilities of artificial neural networks (ANNs) by transferring the knowledge of pressure drop correlation to the ANN.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Green & Sustainable Science & Technology
P. Gimenez-Prades, J. Navarro-Esbri, C. Arpagaus, A. Fernandez-Moreno, A. Mota-Babiloni
Summary: The article reviews the publicly available investigations regarding thermodynamic and transport properties and system performance of several low-GWP molecules, discussing their suitability and safety concerns as alternatives in HVAC&R and ORC applications.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Adrian Mota-Babiloni, Adrian Fernandez-Moreno, Pau Gimenez-Prades, Cosmin-Mihai Udroiu, Joaquin Navarro-Esbri
Summary: The absence of GWP limitation in vapor compression refrigeration systems operating below -50 degrees C has hindered market development. Only a few mixtures currently exist for -80 degrees C refrigeration. This study explores the combination of pure fluids as three-component mixtures for ultra-low temperature refrigeration, considering various parameters such as cooling capacity, coefficient of performance, global warming potential, and flammability. The trade-off between environmental and energy aspects would require a lower priority to reduce flammability classification.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2023)
Article
Multidisciplinary Sciences
Rasel Ahmed, Shuhaimi Mahadzir, Adrian Mota-Babiloni, Md Al-Amin, Abdullah Yousuf Usmani, Zaid Ashraf Rana, Hayati Yassin, Saboor Shaik, Fayaz Hussain
Summary: This study utilizes response surface methods and a hybrid multi-objective grey wolf optimizer algorithm to model and optimize a two-stage vapor compression refrigeration system. The results show that this approach can significantly optimize multiple indicators such as system efficiency, investment cost, and operational expenses.
Article
Energy & Fuels
Ali Khalid Shaker Al-Sayyab, Adrian Mota-Babiloni, Joaquin Navarro-Esbri
Summary: This work presents an analysis of a new combined organic Rankine-compound ejector vapour compression cycle that utilizes a low-grade ground heat source for power, cooling, and heating production. The study investigates the use of environmentally friendly working fluids and quantifies the energy and exergy efficiency of the system. Results show that this system significantly improves the overall performance of various refrigerants and offers different operating modes based on ground source temperature. Moreover, the inclusion of a recapture heat exchanger for waste heat recovery provides a substantial increase in power generation.
Article
Thermodynamics
Ali Khalid Shaker Al-Sayyab, Adrian Mota-Babiloni, Joaquin Navarro-Esbri
Summary: Using renewable and waste heat sources, such as solar and geothermal heat pumps, as well as advanced technologies like organic Rankine-vapour compression cycles (ORC-VCC) and absorption refrigeration, can effectively reduce electricity dependency and greenhouse gas emissions in industrial applications. While waste heat from VCC systems shows promise for the future, the utilization of solar and geothermal heat pumps is only beneficial when both sources are considered. The performance of ORC and ejector refrigeration systems may be low, but the overall system performance remains similar to that of the original system. Absorption refrigeration is a promising alternative to VCC systems, although it may face challenges with cooling unit sizes and COP.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Cosmin-Mihai Udroiu, Adrian Mota-Babiloni, Pau Gimenez-Prades, Angel Barragan-Cervera, Joaquin Navarro-Esbri
Summary: This paper examines the potential of carbon dioxide (CO2) in ultra-low temperature refrigeration cascades and compares its performance with other promising refrigerants. The results show that CO2 has slightly lower performance compared to other refrigerants in certain scenarios, but it still possesses good environmental and safety characteristics.
ENERGY CONVERSION AND MANAGEMENT-X
(2023)
Article
Chemistry, Physical
S. Castro-Ruiz, L. Marquez-Garcia, M. Solis-de la Fuente, B. Beltran-Pitarch, A. Mota-Babiloni, F. Vidan, P. Inigo-Rabinal, G. Guisado-Barrios, J. Garcia-Canadas
Summary: Thermoelectric materials can convert heat into electricity, and good thermoelectric materials should have high power factors (PF) and low thermal conductivities. Recent improvements in thermoelectric materials have focused on reducing thermal conductivity, while strategies to improve the PF have been limited. A new approach using a porous TE solid with an electroactive salt solution as electrolyte was reported and has shown a significant enhancement in PF. Using this electrolyte, an average PF enhancement of 3.4 times was achieved, due to decreases in the absolute value of the Seebeck coefficient and electrical resistivity of the solid.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Thermodynamics
Pau Gimenez-Perez, Joaquin Navarro-Esbri, Cosmin-Mihai Udroiu, Adrian Mota-Babiloni
Summary: This study evaluates the use of subcooling and proposes eco-friendly alternative refrigerants in a commercial refrigeration system. The simulation and search for the best refrigerants reveal that R-152a and R-290/R-1270 mixture perform well in improving energy efficiency, while R-290 excels in reducing greenhouse gas emissions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
