Article
Energy & Fuels
Qusay Hassan, Marek Jaszczur, Ammar M. Abdulateef, Jasim Abdulateef, Ali Hasan, Abdulmajeed Mohamad
Summary: This research evaluates the use of a supercapacitor module as an energy storage unit for renewable energy systems. The study shows that the use of the supercapacitor module can meet the rapid peaks of electrical load and significantly increase energy self-consumption and self-sufficiency.
Article
Green & Sustainable Science & Technology
Tao Ma, Yijie Zhang, Wenbo Gu, Gang Xiao, Hongxing Yang, Shuxiao Wang
Summary: This study develops a mathematical model for photovoltaic battery system and proposes five operation strategies considering battery charging and simple weather predictions. The results show that purchasing more grid electricity during valley hours can increase the self-consumption rate and self-sufficiency rate. Additionally, pre-charging the battery by the grid during valley hours effectively improves the system's economic performance.
Article
Construction & Building Technology
I. Montero, MT. Miranda, F. Barrena, F. J. Sepulveda, J. I. Arranz
Summary: This study proposes the energy modernization of a group of hospitals in south-western Europe through the installation of photovoltaic self-consumption systems based on their electricity consumption patterns. By examining the energy demand of these hospitals and designing photovoltaic systems, it is found that a significant portion of the annual electricity demand can be covered, potentially reducing CO2 emissions.
ENERGY AND BUILDINGS
(2022)
Article
Thermodynamics
Fan Zhang, Bowen Wang, Zhichao Gong, Xiyuan Zhang, Zhikun Qin, Kui Jiao
Summary: Expanding the scale of renewable energy utilization is necessary for achieving carbon neutrality. A renewable energy utilization model is developed to simulate the performance of a hydrogen production and power generation system. The study investigates the influences of solar radiation intensity and ambient temperature on the system's performance and efficiency. The system efficiency ranges from 6% to 7% under different environmental conditions.
Article
Energy & Fuels
Qusay Hassan, Marek Jaszczur
Summary: This study utilized a computer simulation to examine the impact of supercapacitor modules as fast response energy storage units in renewable energy systems, showing that using supercapacitors can significantly increase energy self-consumption and self-sufficiency in the system.
Article
Energy & Fuels
Qusay Hassan, Bartosz Pawela, Ali Hasan, Marek Jaszczur
Summary: The photovoltaic array is becoming more popular in the global electrical market, and battery storage is being used alongside it by energy consumers. By utilizing central battery storage and an integrated grid or microgrid system, domestic and community loads can share solar power. The study found that self-consumption and self-sufficiency vary significantly depending on the system configuration, with properly designed photovoltaic systems achieving energy self-consumption rates of up to 90.19% and self-sufficiency rates of up to 82.55%. A large sample size and various setups are recommended for a thorough examination of self-sustainability.
Article
Energy & Fuels
Qusay Hassan
Summary: In this research, the sizing of the on-grid photovoltaic system capacity based on maximum energy self-consumption for a household in Diyala state, Iraq, is studied. The simulation process conducted using MATLAB evaluates the optimal system capacity for two different setting positions. The results show that selecting the appropriate tilt angle and tracking system can significantly improve energy self-sufficiency and reduce energy costs, providing an effective approach for sizing storage and renewable energy components in future applications.
Article
Energy & Fuels
Shubhra Chaudhry, Arne Surmann, Matthias Kuehnbach, Frank Pierie
Summary: This study proposes an integrated model to assess and compare the impact of Renewable Energy Communities (RECs) on technical, economic, and ecological aspects. By using this model, different RECs can be simulated and their results compared. Additionally, a set of key performance indicators (KPIs) is provided to interpret and compare the simulation results, as well as to understand the objectives and conflicts among stakeholders of the RECs.
Article
Construction & Building Technology
Benjamin Hauck, Weimin Wang, Yibing Xue
Summary: This paper investigates the impact of model granularity and temporal resolution on simulated energy flow items, self-sufficiency and self-consumption of grid-connected residential PV-battery systems. The results show that temporal resolutions have negligible impact on self-consumption and self-sufficiency, but cause noticeable differences in power profiles observed in the PV-battery system. The impact of model granularity on self-consumption and self-sufficiency is also discussed.
DEVELOPMENTS IN THE BUILT ENVIRONMENT
(2021)
Article
Chemistry, Physical
Ahmed A. Kamel, Hegazy Rezk, Mohammad Ali Abdelkareem
Summary: A novel hybrid energy management system is designed in this paper to achieve the objectives of reduced hydrogen consumption and increased battery state of charge utilization in renewable hybrid power systems. The system combines PV, PEMFC, SC, and Battery, utilizing fuzzy logic and state machine control strategies to optimize energy management. The proposed HEMS achieves significant savings in hydrogen consumption and increase in SOC value compared to stand-alone strategies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
M. S. Okundamiya
Summary: This paper describes the size optimization of a hybrid photovoltaic/fuel cell grid linked power system with hydrogen storage and its economic and environmental benefits in practice. By analyzing 22 years of solar radiation data and utilizing the HOMER energy balance method for optimal design, a sustainable hybrid system solution that can support unstable grid demand was derived.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Zheng Wang, Mark B. Luther, Peter Horan, Jane Matthews, Chunlu Liu
Summary: This paper presents an approach to improve the self-consumption and self-sufficiency of solar PV systems by using a polyvalent heat pump, water storage tanks, and batteries. The analysis of thermal loads and electricity consumption data shows that the proposed system can increase PV self-consumption to 41.96% and self-sufficiency to 86.34%, resulting in a reduction of about 74% in imported energy.
BUILDING SIMULATION
(2023)
Article
Energy & Fuels
Shaojie Li, Tao Zhang, Xiaochen Liu, Xiaohua Liu
Summary: A battery capacity configuration method was established to increase the self-sufficiency rate and self-consumption rate of a building complex system. It was found that the distributed storage scheme had a slightly higher self-sufficiency rate compared to the centralized storage scheme, while the self-consumption rate of the centralized storage scheme was always higher. In addition, the effects of converter loss, complementarity in load curves, and centralized batteries were analyzed to achieve greater self-sufficiency and self-consumption rates.
Article
Energy & Fuels
Pawel Dworak, Andrzej Mrozik, Agata Korzelecka-Orkisz, Adam Tanski, Krzysztof Formicki
Summary: This study presents the results of research on energy self-sufficiency, safety, and production reliability in a salmonids fish farm. The research focuses on energy requirement analyses, innovative solutions implementation guidelines, and diversification of electricity sources such as photovoltaic power plants and wind farms to ensure the security and continuity of energy supplies and the plant's energy self-sufficiency. The study also examines the reliability of power supply for key devices in the fish farming process, as well as the profitability of using energy storage.
Article
Chemistry, Multidisciplinary
Mladen Bosnjakovic, Ante Cikic, Boris Zlatunic
Summary: The significant drop in prices of photovoltaic equipment, rise in electricity prices, and increasing environmental pressure have led to a large increase in installed roof PV capacity worldwide. This paper analyzes the cost-effectiveness of installing PV systems in rural Croatia, showing that such a system can pay off in 10.5 years without government incentives.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Qusay Hassan, Imad Saeed Abdulrahman, Hayder M. M. Salman, Olushola Tomilayo Olapade, Marek Jaszczur
Summary: This study analyzes an off-grid photovoltaic energy system designed to produce hydrogen using a proton-exchange membrane water electrolyzer. The results indicate that the system's annual energy generation is 18,892 kWh at 4313 operating hours, and the hydrogen production cost ranges from USD 5.39/kg to USD 3.23/kg. The optimal electrolyzer capacity is 8 kW, producing 37.5 kg/year/kW(p) of hydrogen for USD 3.23/kg.
Article
Chemistry, Physical
Majid K. Abbas, Qusay Hassan, Vahid Sohrabi Tabar, Sajjad Tohidi, Marek Jaszczur, Imad Saeed Abdulrahman, Hayder M. Salman
Summary: This paper discusses the feasibility of using a photovoltaic energy system to produce hydrogen from solar energy in the four main cities of Iraq. A simulation of an off-grid photovoltaic system with an alkaline electrolyser, hydrogen compressor, and hydrogen tank was conducted for one year. The results show that the annual hydrogen production ranges from 1713.92 kg to 1891.12 kg, with an evaluated cost of $3.79/kg. The study suggests that the optimal sites for solar hydrogen production systems are in the midwest of Iraq and other cities with similar climates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Ammar M. Abdulateef
Summary: This research aims to enhance energy transfer by using nanofluids, which are compatible with heat exchanger thermal energy storage (HXTES) applications. A triplex tube heat exchanger (TTHX) was designed to receive hot and cold flows from two thermal baths, and the heat transfer efficiency of the nanofluid with different Cu volume concentrations was evaluated.
Review
Chemistry, Physical
Qusay Hassan, Ammar M. Abdulateef, Saadoon Abdul Hafedh, Ahmed Al-samari, Jasim Abdulateef, Aws Zuhair Sameen, Hayder M. Salman, Ali Khudhair Al-Jiboory, Szymon Wieteska, Marek Jaszczur
Summary: Hydrogen is a promising fuel for eco-friendly energy sources and can be derived from renewable sources. However, renewables-to-hydrogen methods are still in their early stages and require substantial work for widespread recognition in sustainability strategies. This analysis extensively reviews renewables-to-hydrogen technologies, highlighting current states and potential improvements in areas such as efficiency, emissions, costs, mobility, and public acceptance. The study identifies the urgent need for incorporating renewable energy, reducing production costs, and addressing the lack of techno-economic and ecological analyses for renewables-to-hydrogen pathways. The results will facilitate the safe utilization of hydrogen in large energy facilities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Sudhir Kumar Pathak, V. V. Tyagi, K. Chopra, A. K. Pandey, Ahmet Sari, Ammar M. Abdulateef
Summary: This study proposes a novel method of incorporating a phase-change material (PCM) in a solar water heater, which can store excess heat and provide hot water even in low-sunshine conditions. The system achieves energetic and exergetic efficiencies of 76.57% and 79.64% for clear weather, and 2.37% and 1.38% for cloudy weather, respectively.
Article
Green & Sustainable Science & Technology
Qusay Hassan, Aws Zuhair Sameen, Hayder M. Salman, Marek Jaszczur
Summary: The study proposes a comprehensive framework to support the development of green hydrogen production, including legal and regulatory frameworks, investment incentives, and public-private partnerships. It utilizes official and public data to evaluate the potential of renewable energy sources for hydrogen production. The research demonstrates the significant role of renewable energy in green hydrogen production, positioning the country as a leader in this field. Additionally, it suggests a three-step approach for the country to achieve a green hydrogen economy by 2050, while highlighting the challenges and policy implications for making green hydrogen accessible in developing countries like Iraq.
Article
Thermodynamics
Ammar M. Abdulateef
Summary: This research aims to determine the relationship between various parameters to evaluate the thermal performance of steam condenser unit. Experimental work is conducted with different condensate mass flow rates. The non-invasive method of Logarithmic Mean Temperature Difference is used to simulate the work. The findings validate the significance of cold water temperature, flow rate, condenser pressure, and heat transfer coefficient on the steam condenser.
INTERNATIONAL JOURNAL OF HEAT AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Qusay Hassan, Mohammed Al-Hitmi, Vahid Sohrabi Tabar, Aws Zuhair Sameen, Hayder M. Salman, Marek Jaszczur
Summary: Despite having abundant fossil fuel resources, the Middle East is vulnerable to fluctuations in oil and gas prices, which adversely affect their national budgets. While importing energy has benefited some Middle Eastern countries with lower energy costs, conflicts, social unrest, and political instability have made the energy situation in the region challenging. Additionally, the Middle East faces significant water shortages, and the management of water resources is becoming increasingly crucial as the scarcity intensifies.
CLEANER ENGINEERING AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Marek Jaszczur, Qusay Hassan, Aws Zuhair Sameen, Hayder M. Salman, Olushola Tomilayo Olapade, Szymon Wieteska
Summary: This study compares the potential for green hydrogen production in Europe and the Middle East using 3MWp solar and wind power plants. Two representative cities, Krakow in Poland (Europe) and Diyala in Iraq (Middle East), are selected based on experimental weather data from 2022. The study optimizes the capacity of an alkaline water electrolyzer in conjunction with the power plants to maximize green hydrogen output and evaluates economic and environmental factors to identify the region with the most advantageous conditions. The analysis reveals that the Middle East has superior potential for green hydrogen production compared to Europe, primarily due to higher solar and wind resources, as well as lower land and labor costs. Hydrogen production costs range from USD 9.88 to USD 14.31 per kilogram in Europe, while in the Middle East, costs range from USD 6.54 to USD 12.66 per kilogram. Therefore, the Middle East emerges as a more feasible region for green hydrogen production, offering opportunities to reduce emissions, improve air quality, and enhance energy security. The research findings highlight the potential of the Middle East industrial-residential zone 'Diyala' and the Europe industrial-residential zone 'Krakow' for green hydrogen production.
Article
Green & Sustainable Science & Technology
Qusay Hassan, Itimad D. J. Azzawi, Aws Zuhair Sameen, Hayder M. Salman
Summary: This paper provides a comprehensive review of the current situation and future prospects of hydrogen fuel cell vehicles (HFCVs). HFCVs, which utilize hydrogen gas as fuel to power an electric motor, offer impressive energy efficiency, high power-to-weight ratio, and substantial reductions in emissions. However, their widespread adoption is hindered by technical and infrastructural challenges, including high manufacturing costs, low energy density of hydrogen, safety concerns, fuel cell durability issues, inadequate refueling infrastructure, and complexities of hydrogen storage and transportation. Nonetheless, advancements in technology and potential policy interventions provide promising prospects for HFCVs to become a critical component of sustainable transportation in the future.
Article
Energy & Fuels
Slawosz Kleszcz, Marek Jaszczur, Bartosz Pawela
Summary: A unique system with a periodic counterflow heat exchanger for heat and moisture recovery is presented in this research. Experimental and numerical analysis were conducted to determine the key parameters of the system operation and evaluate its efficiency under different weather conditions. It was found that the temperature, velocity, and humidity of fresh and extract air have a significant impact on the heat and moisture recovery efficiency.
Article
Energy & Fuels
Mohammed Fareed Rahi, Muslum Arici, Ammar M. Abdulateef, Hakeem Niyas
Summary: Globally, the building sector is experiencing a surge in energy demand due to rising temperatures, population growth, urbanization, and improved living standards. This paper investigates the effective utilization of macro-encapsulated phase change material (PCM) in reinforced cement concrete (RCC) roof slabs to enhance their thermal performance. The study explores the impact of PCM shape, heat transfer area, and thermal shading on the reduction of inner roof temperature. Various cases are examined, and the structural performance of the RCC conventional slab and slab with PCM capsules is also analyzed. The findings suggest that a cuboid shape with less thickness, increased heat transfer area, and thermal shading can significantly reduce roof temperature.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Qusay Hassan, Sameer Algburi, Aws Zuhair Sameen, Hayder M. Salman, Marek Jaszczur
Summary: This study explores the impact of strategic photovoltaic (PV) deployment on regional electricity self-sufficiency in Iraq, providing insights into the advantages and challenges of transitioning towards an energy-independent system by 2050. The findings suggest that increasing PV supply significantly improves self-sufficiency, with PV generation covering 76% of the districts electricity needs in 2022. The study highlights the importance of expanding rooftop PV capacity and recommends various measures to support PV integration and incentivize rooftop PV system adoption.
RENEWABLE ENERGY FOCUS
(2023)
