Article
Thermodynamics
Mengjie Li, Ming Liu, Can Xu, Jinshi Wang, Junjie Yan
Summary: Drying is a significant source of energy consumption globally and innovation in energy-saving drying techniques is crucial for sustainable development. This study analyzes and compares the performance of various evaporative dryers, including rotary, solar, and spouted bed dryers, and develops thermodynamic models. The exergy consumption rate, defined as the energy consumed to dehydrate 1 kg of water, is used to evaluate energy utilization. The study also compares the irreversibility of the three subprocesses of dryers and provides guidance to enhance energy utilization efficiency.
Article
Energy & Fuels
Farayi Musharavati, Shoaib Khanmohammadi, Mohammad Rahmani, Saber Khanmohammadi
Summary: The study involved thermodynamic modeling and exergy analysis of a compressed air energy storage system boosted with thermoelectric generator (CAES/TEG). By adding thermoelectric modules to the CAES system, the net output power of the system was increased, indicating the potential of improving the performance of the system.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Obieda R. Altarawneh, Alanood A. Alsarayreh, Ala'a M. Al-Falahat, Mazen J. Al-Kheetan, Saad S. Alrwashdeh
Summary: The scarcity of energy supplies is a pressing global issue, and Jordan is particularly affected in terms of fossil fuel resources, especially in thermal power generation. This study aims to analyze the KOSPO power plant for energy losses and suggest improvements to enhance plant performance.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
F. Giacalone, P. Catrini, L. Gurreri, A. Tamburini, A. Cipollina, G. Micale, A. Piacentino
Summary: The increasing demand for freshwater has led to the development and adoption of desalination technologies. Electrodialysis plays a crucial role in brackish water desalination, but reducing energy consumption is necessary to make it competitive for treating more concentrated solutions like seawater. Exergy analysis is used in this study to determine the contribution of thermodynamic inefficiencies to process efficiency and energy consumption. The results show that factors such as ohmic resistance and undesired transport phenomena significantly affect the efficiency. Improved membranes with low resistances can slightly enhance efficiency. The use of a double-stage configuration greatly reduces energy consumption.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Alok Dhaundiyal, Gabor Bercesi, Laszlo Toth
Summary: This study applies the Hermite interpolant to examine the thermodynamic aspects of a geothermal site, including energy distribution, system exergy determination, and energy ratio. The design parameters of the HVAC system were determined using the steady flow energy equation. The energy ratio in the lecture hall corridor increased by 17% compared to the hall area. The exergy destruction of the system was estimated to be 25%, and the maximum exergy gain was found at the secondary side of the geothermal unit, followed by the fan coils and the radiator. The installed unit could achieve a maximum energy ratio of 4.031 if convective losses across the building material are minimized.
Review
Green & Sustainable Science & Technology
Morteza Bayareh
Summary: The solar chimney power plant (SCPP) is a technology that utilizes solar energy to heat air and generate electricity, with large size and electricity production capacity that reduces environmental impacts. Optimizing the dimensions of SCPP components is crucial for maximizing performance, as there is a direct relationship between exergy and SCPP development.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Thermodynamics
Dogan Erdemir, Ibrahim Dincer
Summary: The present study describes the development and performance assessment of a novel hydrogen storage system that integrates compressed air storage to maintain the desired storage pressure. The system utilizes a two-chamber storage system, where air and hydrogen are stored in separate chambers, and operates in a synchronized manner to compress air while expanding hydrogen. The study also incorporates an ammonia-fueled Brayton cycle to maximize the energy efficiency of the system. The results show promising energy and exergy efficiencies for the charging and discharging periods, with the overall system efficiencies calculated for a specific charging and discharging duration.
APPLIED THERMAL ENGINEERING
(2023)
Article
Construction & Building Technology
Chenjiyu Liang, Xianting Li, Lin Fang, Takema Nakazawa, Toshio Tanaka
Summary: In this study, a fresh air handling unit with exhaust air heat recovery is constructed using grade matching of loads and waste and natural energies. The improved system configuration, determined under different typical fresh air parameter conditions, ensures efficient operation throughout the year. Numerical models show that the proposed system achieves higher energy efficiency and a shorter payback period compared to the traditional system.
ENERGY AND BUILDINGS
(2023)
Article
Green & Sustainable Science & Technology
Selman Cagman, Eren Soylu, Umit Unver
Summary: Compressed air systems have high energy transfer capacity but are inefficient, resulting in high energy consumption and CO2 emissions. Improving energy efficiency in these systems can reduce energy consumption and CO2 emissions, promoting cleaner production. This paper investigates the energy-saving potential and carbon emissions of Compressed Air Systems using in-situ energy audit data and proposes two new Energy Performance Indicators.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Thermodynamics
K. Kiran Kumar, Kotresha Banjara, Kishan Naik
Summary: This study presents a numerical analysis of exergy transfer and irreversibility through the discrete filling of high-porosity aluminum metal foams inside a horizontal pipe. The results confirm the accuracy of the numerical methodology by comparing it with experimental outcomes. The study reveals the importance of available energy (exergy) in the system and provides insights for improving heat transfer performance and optimizing the design of thermal systems.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Green & Sustainable Science & Technology
Mehran Saedi, Mehdi Mehrpooya, Adib Shabani, Andrew Zaitsev, Andrey Nikitin
Summary: This paper proposes a cryogenic process to produce neon, nitrogen, and liquid oxygen from a two-column air separation unit, and conducts energy, exergy, and sensitivity analyses. The results show that increasing the temperature of the feed streams and the reflux ratio of the columns negatively affect neon recovery, while increasing the feed's pressure improves the recovery.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Alok Kumar, K. K. Agrawal, S. K. Tyagi
Summary: This research examines the energy, exergy, and sustainability analysis of a traditional four-pan jaggery unit in the production process of sugarcane-based jaggery. Exergy analysis is conducted experimentally, using thermodynamic relations to determine the specific exergy for jaggery production. The comparison of energy and exergy between winter and summer shows an increase in thermal energy efficiency of the jaggery unit during the summer, as well as higher exergy efficiency when accounting for the combustion performance of bagasse. However, the sustainability score indicates negative environmental impacts in both seasons, with the jaggery facility operating more sustainably in the summer.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Valentino Mancini, Nicola Verdone, Antonio Trinca, Giorgio Vilardi
Summary: The aim of this study is to analyze the impact of alternative fuels on cement production in order to improve waste utilization and reduce CO2 emissions. Through sensitivity analysis and exergetic and economic analyses, the different scenarios were evaluated in terms of energy efficiency, economic impact, and pollutant emission reduction.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Maria Anna Murmura, Giorgio Vilardi
Summary: The study of water-splitting thermochemical cycles using solar energy involves selecting the most promising cycles through exergy and energy analysis, aiming to increase the overall thermodynamic efficiency. Research found that the exergy efficiency of the zinc/zinc oxide cycle increased from about 14% to almost 40% in the most efficient scenario considered.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
M. Sheikholeslami, M. Jafaryar, Zafar Said, Ammar Alsabery, Houman Babazadeh, Ahmad Shafee
Summary: In engineering fields, using tapes with various configurations can improve the efficiency of heat exchangers and address the current challenges of energy demand. Employing helical tapes can increase flow resistance but also enhance heat transfer efficiency and Nusselt number compared to traditional designs. By increasing tape width and Reynolds number, thermal irreversibility can be reduced, leading to improved system efficiency.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Amin Shahsavar, Abbas Goodarzi, Ighball Baniasad Askari, Mehdi Jamei, Masoud Karbasi, Masoud Afrand
Summary: This paper presents a 3D numerical analysis of a battery thermal management system (TMS) with Phase Change Material (PCM). The study found that setting an appropriate tip clearance (TC) between the annular fins and the alumina enclosure improves PCM free convection and enhances the heat transfer rate.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Engineering, Multidisciplinary
Fatih Selimefendigil, Hakan F. Oztop, Masoud Afrand
Summary: The shape effects of TEG mounted vented cavities on the performance characteristic during alumina-water nanofluid convection are numerically assessed. L-shaped cavity achieves the highest hot side temperature, followed by U, T, and R-shaped cavities. The power increases with higher opening ratio and Reynolds number.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Energy & Fuels
Mohammadreza Baghoolizadeh, Afshin Ahmadi Nadooshan, Seyed Amir Hossein Hashemi Dehkordi, Mohammad Rostamzadeh-Renani, Reza Rostamzadeh-Renani, Masoud Afrand
Summary: This study investigates the impact of using photovoltaic shadings on energy consumption and production in buildings. The results show that the optimal tilt angle for maximum sunlight reception is 19.6 in a southern direction. The use of solar shadings can reduce electricity consumption by approximately 4 to 11%, 1 to 4%, and 10 to 22% for an annual period, winter and summer season, respectively.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Seyed Masoud Parsa, Alireza Yazdani, Davoud Javadi, Masoud Afrand, Nader Karimi, Hafiz Muhammad Ali
Summary: This study investigates the efficiency of thermoelectric modules in two solar stills and finds that the system equipped with thermoelectric heating modules outperforms the system with thermoelectric cooling modules in terms of energy, exergy, and productivity.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Green & Sustainable Science & Technology
Bahman Soleiman Dehkordi, Masoud Afrand
Summary: The energy consumption in the Middle East has increased by 24.2% from 2010 to 2020. Despite the global warming phenomenon affecting the region, the share of renewable energy has remained relatively unchanged. The study found that the effectiveness of phase change materials (PCM) varies between hot and cold regions, and the proper selection of PCM can lead to significant energy savings and reduced building energy demand.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Saeed Aghakhani, Masoud Afrand, Arash Karimipour, Rasool Kalbasi, Mohammad Mehdi Razzaghi
Summary: This article presents a modeling study on the cooling of solar panels using a copper tube. The study considers various variables such as tube diameter, number of loops, and flow rate to optimize the performance of the solar panels. The results indicate the conditions that result in the highest electrical efficiency, thermal efficiency, and overall efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Thermodynamics
Saeed Aghakhani, Masoud Afrand
Summary: This paper examines the effect of simultaneous use of air-and water-cooled flow on the efficiency of a solar photovoltaic thermal (PVT) panel. The results show that increasing the volumetric flow rate of water enhances the electrical efficiency of PVT, while increasing the number of fans and volumetric flow rate of water improves the thermal efficiency and total efficiency of PVT.
APPLIED THERMAL ENGINEERING
(2022)
Article
Environmental Sciences
Rasool Kalbasi, Bijan Samali, Masoud Afrand
Summary: Adding phase change materials (PCMs) into building envelopes is an effective way to reduce energy consumption and CO2 emissions. However, the presence of phase change in PCMs may not always lead to better energy savings. Installing PCMs near the uppermost layer can enhance energy-saving performance.
Article
Engineering, Multidisciplinary
Leila Darvishvand, Vahid Safari, Babak Kamkari, Meysam Alamshenas, Masoud Afrand
Summary: This paper presents numerical simulations and machine learning-based prediction of the transient melting process of phase change material in latent heat thermal storage units. The impacts of fin parameters on the thermal behavior were analyzed, and correlations for predicting liquid fractions and stored energy were developed using artificial neural networks.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Green & Sustainable Science & Technology
Rasool Kalbasi, Masoud Afrand
Summary: The renovation of old buildings with a combination of PCM and insulation can effectively reduce energy consumption, especially in some hot regions where this combination has significant impact on decreasing total energy demand.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Amin Shahsavar, Ali H. A. Alwaeli, Neda Azimi, Shirin Rostami, Kamaruzzaman Sopian, Muslum Arici, Patrice Estelle, Sandro Nizetic, Alibakhsh Kasaeian, Hafiz Muhammad Ali, Zhenjun Ma, Masoud Afrand
Summary: This paper presents a critical review with recommendations for future research on the topic of exergy examination of water-based and nanofluid-based photovoltaic-thermal units. It introduces the concept and mathematical exergy relations, discusses water-based and nanofluid-based photovoltaic-thermal units in detail, and describes novel units.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Saeed Aghakhani, Masoud Afrand, Arash Karimipour, Rasool Kalbasi, Mohammad Mehdi Razzaghi
Summary: This study investigates the performance of a flat plate solar collector with a spiral pipe containing water through numerical and experimental research. The results show that increasing the outer diameter of the spiral and the diameter of the collector pipe enhances the average temperature and heat transfer coefficient, while reducing the flow rate decreases these parameters. Moreover, the pressure drop and pumping power are influenced by the flow rate, outer diameter of the spiral, and pipe diameter.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Thermodynamics
Saeed Aghakhani, Ahmad Hajatzadeh Pordanjani, Masoud Afrand, Ayoob Khosravi Farsani, Nader Karimi, Mohsen Sharifpur
Summary: This paper presents a thermodynamic analysis of a mini circular heatsink, investigating different types of heatsinks and their performance. The results show that copper heatsinks have better cooling performance than aluminum heatsinks. Additionally, the study found that the addition of nanoparticles to the working fluid has a minimal impact on the thermodynamic performance of the system. Increasing the Reynolds number of the fluid flow reduces the exergy losses and improves the first and second law efficiencies.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Chemistry, Physical
Ahmad Hajatzadeh Pordanjani, Saeed Aghakhani, Masoud Afrand, Ping Zhang, Rongjiang Tang, Omid Mahian, Somchai Wongwises, Mohammad Mehdi Rashidi
Summary: This study investigates lithium-ion battery packs made of compact cylindrical Li-ion batteries. The thermal and electrochemical equations governing the batteries are solved using the finite-element method, coupled with the airflow around the batteries. The results show that better cooling enhances the cells' long-term performance, and increasing the distribution of the batteries at the center improves cooling and reduces temperature gradients.
JOURNAL OF POWER SOURCES
(2023)
