Article
Thermodynamics
Ahmad Zarei, Saeed Akhavan, Maryam Ghodrat, Masud Behnia
Summary: This study analyzes a novel solar polygeneration system that combines photovoltaic thermal (PVT) and flat plate collector (FPC) to achieve high electrical and thermal efficiencies. The use of a booster compressor significantly enhances system performance and reduces carbon dioxide emissions.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Environmental Sciences
Sonia Z. Issaq, Shamil K. Talal, Aasim A. Azooz
Summary: A new model has been developed to determine the optimal tilt angle for PV panels and solar collectors based on yearly, seasonal, and monthly basis. The model estimates the diffusion component of solar radiation using Orgill and Holland's model, and the relationship between diffusion and direct components is derived from empirical data. The optimal tilt angle for each month, season, and year is determined by maximizing the total amount of diffused and direct radiation. The model is programmed in MATLAB and is consistent with experimental data and other published model predictions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Peyman Pourmoghadam, Alibakhsh Kasaeian
Summary: In order to meet the increasing energy consumption caused by the improvement of living standards and the depletion of fossil fuels, utilizing renewable energies becomes crucial. This study presents a dynamic solar combined cooling, heating, power, and water production system, which is modeled using MATLAB, EES, and TRNSYS software. The system incorporates a phase change material energy storage unit to store and reuse solar thermal energy. The energy and economic aspects of the system configuration are investigated, and various parameters are analyzed. Toluene is found to have the best annual performance among the evaluated organic Rankine fluids.
Article
Energy & Fuels
Seyed Mohammadreza Esmaeili, Peyman Pourmoghadam
Summary: This study presents a dynamic simulation of a combined cooling, heating, and power (CCHP) configuration powered by concentrating photovoltaic thermal (CPVT) collectors. The system components include CPVT collectors, a phase change material (PCM) storage tank, an organic Rankine cycle (ORC), an absorption chiller, and heat exchangers. The study evaluates the energy, exergy, and economic performance of the system during warm months and examines the influence of key parameters. The results show that increasing the CPVT area enhances the solar fraction and CPVT is the main contributor to exergy destruction.
Article
Green & Sustainable Science & Technology
Juan Camilo Lopez, Alejandro Escobar, Daniel Alejandro Cardenas, Alvaro Restrepo
Summary: This paper compares the exergy performances of two different types of solar thermal collectors in a sugarcane cogeneration power plant in Colombia. The introduction of solar thermal collectors can effectively reduce fuel consumption, with parabolic trough collector outperforming linear Fresnel collector in heat generation.
Article
Thermodynamics
Shucheng Wang, Xiaoxu Chen, Bing Wei, Zhongguang Fu, Hongwei Li, Mei Qin
Summary: In this study, a net zero emissions system with biomass gasification based CCHP and green DME production was proposed and evaluated. Parametric, thermodynamic, and economic analysis methods were used to investigate various factors such as the H2/CO ratio, steam-to-biomass ratio, calorific value of syngas, and DME yield. The results showed that increasing the H2/CO ratio led to an increase in H2 mole fraction and a decrease in CO mole fraction. The thermodynamic analysis demonstrated high efficiencies for the overall system, while the economic analysis showed the impact of bio-DME price on net annual income and payback period.
Article
Thermodynamics
Jiejie Liu, Yao Li, Xianyang Meng, Jiangtao Wu
Summary: In this study, a novel hybrid fuel cell-combined cooling, heating, and power (CCHP) system, driven by solar energy and biomass, is proposed. The system consists of solar-driven biomass gasification, solid oxide fuel cell, homogeneous charge compression ignition engine, double-effect absorption chiller, and waste heat recovery unit. Various analyses, including energy, exergy, exergoeconomic, and environmental analyses, were performed to evaluate the performance of the proposed system. It was found that the introduction of solar energy significantly improves the system's energy and exergy efficiency, as well as the utilization rate and generating capacity of biomass, compared to a reference system without solar energy. Additionally, the proposed system exhibits lower carbon emissions compared to the reference system.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Thermodynamics
Zhiming Xu, Qinglu Kong, Hongwei Qu, Chong Wang
Summary: The efficiency of PV panels decreases with increasing temperature, so effective cooling is necessary. The cooling characteristics of PCM on PV panels were experimentally investigated. The results showed that PCM effectively reduced the temperature of the panels and improved their power generation efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Physics, Applied
L. Monnin, S. L. G. Hess, J-F Roussel, P. Sarrailh, D. Payan
Summary: A plasma expansion model was developed to study flash-over propagation on spacecraft solar panels, considering plasma extinction effects. A minimum on the sheath potential was found, explaining the end of plasma emission by the cathode and the end of plasma expansion. Numerical results showed good agreement with experimental measurements, and the model has potential applications in preventing arcing on spacecrafts solar panels.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Yujia Song, Hailin Mu, Nan Li, Xunpeng Shi, Xunwen Zhao, Chaonan Chen, Hongye Wang
Summary: This study proposes a hybrid energy system that utilizes surplus electricity to produce hydrogen, providing energy for public buildings in Northeast China. The system configuration with the lowest unit energy cost was obtained through optimization. It effectively addresses the problem of photovoltaic power curtailment.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Qun Guo, Yuxuan Chen, Yunbao Xu, Sayyad Nojavan, Hasan Bagherzadeh, Esmaeil Valipour
Summary: The peer-to-peer (P2P) energy trading strategy is a hopeful solution for dealing with high electricity costs during peak demand periods in residential areas. In this study, three buildings, two with solar panels and one with a hydrogen source, are considered and the system operator is investigated under uncertain conditions. By utilizing P2P energy trading and renewable energy resources, reliable electricity can be provided to customers in remote areas.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Editorial Material
Chemistry, Multidisciplinary
Mark Peplow
Summary: Solar power is rapidly expanding and contributing to a significant portion of global electricity generation. However, the reliance on crystalline silicon with a limited lifespan poses a potential issue.
ACS CENTRAL SCIENCE
(2022)
Article
Thermodynamics
Xiaohui Yang, Kang Liu, Zhengyang Leng, Tao Liu, Liufang Zhang, Linghao Mei
Summary: This paper studies the performance of the combination of photovoltaic cells and cooling, heating, and power systems (PV-CCHP) in terms of economy, environment, and energy. Through a comparison and analysis of the redundantly designed PV-CCHP system, the multi-device parallel operation without redundancy design PV-CCHP system, and the single device operation PVCCHP system, the results show that the redundantly designed PV-CCHP system has the best overall performance.
Article
Thermodynamics
Balazs Bokor, Hacer Akhan, Dogan Eryener, Miklos Horvath
Summary: A novel application of a commercially available transpired solar collector for passive cooling is presented in this study. The system has been shown to cool air effectively by transferring heat to the night sky. Experimental results indicate a significant cooling capacity of the collector plate, with the system demonstrating high cooling performance both in terms of maximum and average efficiency.
APPLIED THERMAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Dominik Baer, Stefan Feuerriegel, Ting Li, Markus Weinmann
Summary: The study shows that message framing can promote serious commitment to green technologies among retail consumers, thereby promoting the use of clean energy.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
Amin Shahsavar, Majid Jafari, Ighball Baniasad Askari, Fatih Selimefendigil
Summary: In this study, the influence of the number of ribs on the laminar forced convection flow of a silver/water-ethylene glycol nano-fluid in a rifled tube was investigated using the two-phase mixture model. The results showed that increasing the number of ribs was beneficial from the perspective of the first-law performance, but undesirable from the perspective of the second-law performance. It was also found that the rifled tube consistently outperformed the plain tube in terms of hydrothermal performance.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Thermodynamics
Ighball Baniasad Askari, Mehran Ameri
Summary: The translation explains how solar thermal/MED technology can help address water scarcity in arid regions of the world. The study results show that different solar thermal technology configurations will result in varying unit costs and payback periods for fresh water production.
APPLIED THERMAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Saeid Mirzaei, Mehran Ameri, Amin Ziaforoughi
Summary: This study investigated the manufacturing and testing of an infrared dryer equipped with a PV/T solar collector, aiming to compare the energy and exergy efficiency of the dryer in glazed and unglazed modes, as well as analyze the drying kinetic of potato slices. The experiments showed that glazed mode prolonged drying time by 12-25% for 3 mm thicknesses and 5-25% for 7 mm thicknesses compared to unglazed mode, despite the system's low energy consumption.
Article
Thermodynamics
Afshin Abdollahian, Mehran Ameri
Summary: Supplementary firing is a common method to increase power generation in a combined cycle power plant, but it has a negative impact on the overall energy and exergy efficiencies of the system, especially during partial load operation. Studies have shown that supplementary firing can increase power generation and energy efficiency of the steam cycle, but cannot fully compensate for exergy destruction in the cycle.
APPLIED THERMAL ENGINEERING
(2021)
Article
Environmental Sciences
Saber Sadeghi, Ighball Baniasad Askari
Summary: Iran is facing challenges in reducing fuel consumption and CO2 emissions, leading to a need for renewable energy resources. Studies have shown that utilizing concentrated solar technology and molten carbonate fuel cells can significantly reduce CO2 emissions and improve overall efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Mehran Ameri, Reza Sardari, Hadi Farzan
Summary: The study shows that using PCM improves daily thermal performance of SAHs, and using PCMs with higher melting point temperature increases the outlet temperature and daily performance of SAHs significantly. Additionally, an arrangement with equally distributed PCM types with different melting points shows the optimal daily thermal performance with around 5% improvement.
Article
Green & Sustainable Science & Technology
Ighball Baniasad Askari, Hossein Ghazizade-Ahsaee, Mehran Ameri
Summary: With the decrease in fuel price subsidies in Iran, the demand for sustainable production of cooling and freshwater using solar energy is becoming a challenge. Locations with high solar radiation levels require smaller solar field areas and larger thermal energy storage capacities, resulting in lower cooling and freshwater unit costs.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2022)
Article
Green & Sustainable Science & Technology
Aida Orumiyehei, Mehran Ameri, Mohammad Hasan Nobakhti, Masud Zareh, Saeed Edalati
Summary: This study addresses the discontinuity and fluctuations in industrial waste heat and solar power by integrating waste heat recovery systems and Organic Rankine Cycle, as well as linear Fresnel collectors. Continuous and steady heat load is achieved in two sectors. The results reveal that the thermal and exergy efficiencies of the system are 12.3% and 16.35%, respectively, under constant and continuous thermal power.
Article
Energy & Fuels
Mehran Ameri, Hamed Torabi, Ighball Baniasad Askari
Summary: The study investigated the optical and thermodynamic characteristics of solar CPC using accurate solar ray-tracing analysis and compared the efficiencies of CPC with different geometric concentration ratios. Results showed that CPC has higher absorption efficiency compared to other solar collectors, with efficiency increasing with the concentration ratio (C-t).
INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY
(2022)
Article
Thermodynamics
Abdolazim Zarei, Mehran Ameri, Hossein Ghazizade-Ahsaee
Summary: This study conducts advanced exergetic analysis on a horizontal direct-expansion ground sourced CO2 heat pump operating in a transcritical cycle. The results indicate that, for system improvement, the compressor and ground heat exchanger play key roles, while the expansion valve has less impact on system enhancement.
INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION
(2021)
Article
Thermodynamics
Zeinab Rezvani, Hamid Mortezapour, Mehran Ameri, Hamid-Reza Akhavan, Selcuk Arslan
Summary: Drying with a continuous infrared-refractance window dryer coupled with a double-pass photovoltaic-thermal solar collector was investigated in this study. The effects of different drying air flow rates and Spirulina feeding rates on the drying performance were analyzed.
HEAT AND MASS TRANSFER
(2022)
Article
Green & Sustainable Science & Technology
Ighball Baniasad Askari, Amin Shahsavar, Mehdi Jamei, Francesco Calise, Masoud Karbasi
Summary: This study investigates the application of six engine oil-based Nano fluids in a solar concentrating photovoltaic thermal collector. The increase of nanoparticle concentration, concentrator surface area, and beam irradiance were found to improve the system's efficiency.
Article
Construction & Building Technology
Amin Shahsavar, Ighball Baniasad Askari, Amir Roohbakhsh Meyary Dovom
Summary: This study numerically investigates the use of phase change material (PCM) as a coolant in air-type photovoltaic thermal (PVT) systems. The results show that PCM cooling decreases the PV temperature, increases the PVT output air temperature, and allows for the production of useful thermal and electrical energy in cold months.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Hadi Farzan, Mehran Ameri, Mojtaba Mahmoudi
Summary: The current study introduces a new planar thermal diode integrated collector storage (ICSs) system and analyzes its transient dynamics and performance under field conditions. It was found that utilizing partial vacuums may decrease performance, but the best retention and collection efficiencies were obtained at a total pressure of 0.7 atm. However, increasing the partial vacuums to a total pressure of 0.5 atm significantly decreased the retention efficiency.
Article
Green & Sustainable Science & Technology
Maryam Salajeghe, Mehran Ameri
Summary: This article presents a novel hybrid model for water desalination and compares energy consumption and brine discharge of different desalination configurations. The findings demonstrate that the hybrid system can reduce energy consumption and brine discharge.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
