Article
Thermodynamics
Mustafa Karagoz, Cuneyt Uysal, Umit Agbulut, Suat Saridemir
Summary: In this study, comprehensive exergetic and exergoeconomic analyses were conducted on a single-cylinder, four-stroke diesel engine. Different nanofuels were tested at varying engine loads, with D90B10Al(2)O(3) showing the highest exergy efficiency and sustainability index values. Al2O3-doped nanofuel emerged as the best test fuel in terms of exergy, exergoeconomics, and sustainability analyzes.
Article
Thermodynamics
Amit Kumar Juneja, P. Barnwal, A. K. Sharma, Banashree Naskar, V. K. Ammu
Summary: This study conducted thermodynamic and exergoeconomic analysis of a single-stage spray drying unit for skim milk powder production. The energy and exergy efficiency of the plant were calculated as 89.63% and 49.19%, respectively. The drying chamber and booster pump showed the highest potential for improvement. The drying chamber also had the highest processing cost (percentage relative cost difference: 59.84%), followed by the cyclone separator (percentage relative cost difference: 48.98%). Based on these findings, improvements can be made to the high potential components of the spray drying plant.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Man-Wen Tian, Azher M. Abed, Bhupendra Singh Chauhan, Raymond Ghandour, Aliashim Albani, Salem Alkhalaf, Hamad Almujibah, M. A. El-Shorbagyh, I. M. Ashrafj
Summary: As a nuclear power source, gas turbine modular helium reactors (GT-MHR) have shown great potential in the energy industry. This study integrated a GT-MHR cycle with a Stirling engine to achieve high-efficiency and eco-friendly electricity production. Multi-aspect studies were conducted to evaluate the system's performance and the results showed promising outcomes.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Cuneyt Uysal, Uemit Agbulut, Erdem Elibol, Tuna Demirci, Mustafa Karagoz, Suat Saridemir
Summary: Graphene oxide nanoparticles were synthesized and added to a diesel-biodiesel blend. The fuel with 100 ppm graphene oxide nanoparticles showed the highest exergy efficiency and sustainability index, and the second-cheapest specific exergy cost of crankshaft work.
Article
Green & Sustainable Science & Technology
Wenyi Sun, Ming Li, Zhen Pan, Jingxian Yu, Liyan Shang, Li Zhou, Zhenbo Lv
Summary: In recent years, research on energy-efficient polygeneration systems has been increasing due to concerns about tight energy supply and escalating demand. This study focuses on the utilization of liquefied natural gas (LNG) as a clean fossil fuel for thermodynamic system design. A novel self-supplying thermodynamic system is proposed to recover the cold energy released during LNG gasification, combining power generation and heating systems. Comprehensive evaluations are conducted based on various energy parameters, and optimization algorithms are applied to improve system performance. The results demonstrate the developability of the system and provide valuable insights for designing and optimizing LNG cold energy utilization systems.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Suleyman Simsek, Gursah Guruf, Samet Uslu, Hatice Simsek
Summary: In this study, the exergy, exergoeconomic, enviroeconomic, and sustainability index analyses of biodiesel and diesel blends obtained from waste animal fats were conducted. The experiment utilized a fixed-speed four-stroke, single-cylinder, and air-cooled compression ignition engine operating at engine loads between 500 and 3000 W. The results showed that the highest exergy efficiency, lowest relative cost difference, and maximum sustainability index value were obtained in the D90B10 fuel at a 3000 W engine load. Regarding enviroeconomics, the cost of annual CO2 emission was found to increase with engine load, with D90B10 fuel being closest to D100 fuel at low engine loads.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Canan Acar, Ibrahim Dincer
Summary: This study investigates an integrated multigeneration system that can simultaneously produce hydrogen, electricity, heat, and methanol. The results show that the system is capable of producing hydrogen, heat, electricity, and methanol with overall energetic and exergetic efficiencies about 68% and 47%, respectively, demonstrating good performance in terms of energy and exergy efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Nahid Taherzadeh-Shalmaei, Mahta Rafiee, Ali Kaab, Majid Khanali, Mohammad Amin Vaziri Rad, Alibakhsh Kasaeian
Summary: This study aimed to address the challenges of energy consumption and environmental emissions in the mushroom production sector through energy audit analysis and life cycle assessment. Results showed significant energy imbalance and inefficiency in mushroom production, with electrical energy consumption being the largest contributor. The study also identified opportunities for energy savings, particularly in compost, through the use of optimization techniques.
Article
Construction & Building Technology
Jagannath Reddy, Biplab Das, Jagadish, Sushant Negi
Summary: Experimental investigation on two solar air collectors (SACs) with modified absorber plates shows that the cross-corrugated trapezoidal SAC produces up to 7.72% more energy than the reverse trapezoidal SAC. Energy efficiency increases with tilt angle and a threefold increase in air mass flow rate leads to 100-105% increase in energy and exergy efficiencies. Overall, the environmental impact factor of the type-II SAC is significantly lower than that of the type-I SAC.
JOURNAL OF BUILDING ENGINEERING
(2021)
Review
Construction & Building Technology
A. Bozgeyik, L. Altay, A. Hepbasli
Summary: In recent years, reducing ecological footprint to make a positive contribution to environmental quality has become increasingly important. Renewable energy plays a significant role in future trends for efficiency and environmental issues. There is a need for new and innovative research studies on promising technologies, processes, and strategies for sustainable water and energy management.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Chemistry, Physical
Ma Shaofu, Ehab Hussein Bani Hani, Hai Tao, Qiang Xu
Summary: In this research study, a multi-generation energy system coupled with a CO2 capture unit based on Rankine cycle, organic Rankine cycle, ejector cooling system, and absorption chiller was analyzed using energy, exergy, and exergy-economic aspects. MATLAB was developed and a genetic algorithm was applied for system optimization to achieve the optimum operating condition. The objective of the study was to propose an optimized efficient integrated energy system to recycle energy waste from a typical industrial factory. The results indicated the optimal condition of the system and showed improvements in power output, hydrogen production, and desalinated water production by increasing the mass flow rate of waste gases.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Moslem Sharifishourabi, Ibrahim Dincer, Atef Mohany
Summary: This article proposes a new renewable-based multigeneration system that efficiently generates electricity, heating, cooling, and hydrogen in a sustainable manner, while also being environmentally friendly.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
Abdul Samad, Iftikhar Ahmad, Manabu Kano, Hakan Caliskan
Summary: The use of an artificial intelligence model as a surrogate in the online optimization of process conditions of reactive units of a petroleum refinery under uncertainty improves the exergy efficiency of the process. An artificial neural network model, combined with genetic algorithm and particle swarm optimization, achieved efficient process optimization. Sensitivity analysis revealed that the inlet temperatures of reactors were the most influential variables affecting the process exergy efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Thermodynamics
Gustavo Espinosa, Guillermo Ibanez, Aracely Lopez, Orlando Lastres, Juan Reyes-Nava, Joel Pantoja
Summary: An optimal design method for solar air heaters was developed using a mathematical model and numerical simulations. The results showed that reducing the absorber thickness and side frame thickness can improve the energy efficiency and increase the maximum outlet temperature. The use of genetic algorithm technique resulted in an optimal heater area.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Sepehr Sanaye, Navid Khakpaay, Ata Chitsaz, Mohammad Hassan Yahyanejad
Summary: A combined cooling, heating, and power integrated system suitable for a residential complex was proposed and optimized through a comprehensive modeling approach. The selection of 14 gas engines and 9 backup boilers led to an overall thermal efficiency of 74% and a payback period of 1.6 years. The integrated system also showed significant savings in fuel volume flow rate, fuel cost, and reductions in emissions compared to traditional systems.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Pedram Hanafizadeh, Sajjad Falahatkar, Pouria Ahmadi, Mojtaba Mirzakhani Siahkalroudi
APPLIED THERMAL ENGINEERING
(2015)
Article
Thermodynamics
Mehdi A. Ehyaei, Mojtaba Tahani, Pouria Ahmadi, Mohammad Esfandiari
APPLIED THERMAL ENGINEERING
(2015)
Article
Construction & Building Technology
Azim Keshtkar, Siamak Arzanpour, Fazel Keshtkar, Pouria Ahmadi
ENERGY AND BUILDINGS
(2015)
Article
Chemistry, Physical
Pouria Ahmadi, Erik Kjeang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2015)
Article
Chemistry, Physical
Pouria Ahmadi, Ibrahim Dincer, Marc A. Rosen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2015)
Article
Chemistry, Physical
Pouria Ahmadi, Ibrahim Dincer, Marc A. Rosen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2015)
Article
Thermodynamics
Saeed Javan, Vahid Mohamadi, Pouria Ahmadi, Pedram Hanafizadeh
APPLIED THERMAL ENGINEERING
(2016)
Article
Thermodynamics
Peyman Sindareh-Esfahani, Ali Ghaffari, Pouria Ahmadi
APPLIED THERMAL ENGINEERING
(2014)
Article
Thermodynamics
A. Ganjehkaviri, M. N. Mohd Jaafar, P. Ahmadi, H. Barzegaravval
APPLIED THERMAL ENGINEERING
(2014)
Article
Thermodynamics
Arash Jamali, Pouria Ahmadi, Mohammad Nazri Mohd Jaafar
APPLIED THERMAL ENGINEERING
(2014)
Article
Thermodynamics
Pouria Ahmadi, Ibrahim Dincer, Marc A. Rosen
Article
Energy & Fuels
Pouria Ahmadi, Ibrahim Dincer, Marc A. Rosen
JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME
(2015)
Article
Energy & Fuels
Pouria Ahmadi, Ibrahim Dincer, Marc A. Rosen
Article
Construction & Building Technology
Pedram Hanafizadeh, Javad Eshraghi, Pouria Ahmadi, Amirmohammad Sattari
JOURNAL OF BUILDING ENGINEERING
(2016)
Article
Thermodynamics
Saeed Javan, Pouria Ahmadi, Hadi Mansoubi, Mohammad Nazri Mohd Jaafar
HEAT TRANSFER-ASIAN RESEARCH
(2015)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
