Simulation of hydrogen production system with hybrid solar collector

Omar, Muhammed Arslan; Altınışık, Kemal

doi:10.1016/j.ijhydene.2016.05.166

Cited by 23 publications

(5 citation statements)

References 14 publications

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“…The majority of CO2, which is more effective in the increase of global warming compared to other emissions, occurs in energy production [5]. For these reasons, renewable, non-fossil sourced energy generation such as wind, solar, and hydrogen becomes important [6].…”

Section: Wwwdergiparkgovtr/tdfdmentioning

confidence: 99%

Comparison of Central and Individual Heating Systems Used for Heating Housings

Omar

2023

Türk Doğa Ve Fen Dergisi

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Today, energy production based on fossil energy sources has become seriously questioned by societies due to both cost and environmental pollution. Fossil energy sources are mainly used for heating houses, which constitute a significant part of energy consumption. In this study, central heating systems, which are the most widely used methods to meet the heat energy needs of buildings, and individual heating systems are examined and compared. In the study, the heat loss and energy need of a 5-story building consisting of 10 flats in Kars Center with a total heated area of 1080 m2 were calculated using the TS 825 calculation method, accordingly, calculation of heater devices for both systems, determination of heating system elements, annual fuel consumption amount and cost calculation has been made. Natural gas was used as fuel in both systems to be compared for heating the building. According to the values obtained as a result of the study, it was seen that individual heating systems have higher costs than central heating systems in terms of both initial investment and heating cost. It has been determined that central heating systems are more advantageous in terms of initial investment cost, fuel consumption, and total cost. While the total cost was 441096 TL for the central heating system, it was 508825 TL for the individual heating system.

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Section: Wwwdergiparkgovtr/tdfdmentioning

confidence: 99%

Comparison of Central and Individual Heating Systems Used for Heating Housings

Omar

2023

Türk Doğa Ve Fen Dergisi

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“…A more detailed model that showed the utilization of multiple band gap photovoltaics and concentrated heat led to the higher efficiency of solar electrolysis was presented afterward 25 . Later on, several configurations for hydrogen production considered spectrally split light into quantum 26 and thermal components and demonstrated higher overall performance at noticeable levels 27 . Recently, Kaleibari et al have proposed a novel design for a solar process that integrates both thermal and quantum components of solar energy and investigated a complete assessment of its global performance to illustrate its practical interest 28 .…”

Section: Introductionmentioning

confidence: 99%

“…25 Later on, several configurations for hydrogen production considered spectrally split light into quantum 26 and thermal components and demonstrated higher overall performance at noticeable levels. 27 Recently, Kaleibari et al have proposed a novel design for a solar process that integrates both thermal and quantum components of solar energy and investigated a complete assessment of its global performance to illustrate its practical interest. 28 A combined power and heat system was investigated by Assaf et al, 29 which was equipped with solar collectors, a hydrogen tank, an electrolyzer, and a fuel cell.…”

Section: Introductionmentioning

confidence: 99%

Multi‐objective optimization of a novel supercritical CO ₂ cycle‐based combined cycle for solar power tower plants integrated with SOFC and LNG cold energy and regasification

Taheri

Khani

Mohammadpourfard

et al. 2022

Intl J of Energy Research

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This study presents a new system for solar power, which is generated through a solar power tower with a molten salt cycle. To increase the consumption of energy losses, besides the closed supercritical carbon dioxide (sCO2) Brayton cycle, a liquid natural gas (LNG) open-cycle was used as a heat sink alongside a cascade organic Rankine cycle with the capability of working at low temperatures. LNG is implemented for a solid oxide fuel cell input, after cooling down the power generation systems and power generation. Besides the economic and thermodynamic analysis, destruction of exergy has been controlled and parametric studies are performed to investigate the influence of relative factors on the performance of the system. To optimize the system, a genetics algorithm has been employed by considering two reciprocal objective functions of the total cost rate and the exergy efficiency. The results of multi-objective optimization show that the optimized point has a total product cost rate of $115.3/h and an exergy efficiency of 71%. Furthermore, exergy analysis shows that the molten salt heat exchangers and the LNG heat exchangers have the maximum rates of irreversibility and must be taken into consideration as a major priority for optimization.

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“…A similar system was studied by Aslan et al using a compact PV/T collector. The system performance was investigated under different climatic conditions with the numerical model, and the positive effect of a higher operation temperature on the PEM efficiency was highlighted [50].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Generation from a Small-Scale Solar Photovoltaic Thermal (PV/T) Electrolyzer System: Numerical Model and Experimental Verification

Gül

Akyüz

2020

Energies

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In this study, the electrical, electrochemical and thermodynamic performance of a PV/T electrolyzer system was investigated, and the experimental results were verified with a numerical model. The annual amounts of electrical and thermal energy from the PV/T electrolyzer system were calculated as 556.8 kWh and 1912 kWh, respectively. In addition, the hydrogen production performance for the PV/T electrolyzer was compared with that of a PV electrolyzer system. The amount of hydrogen was calculated as 3.96 kg annually for the PV system, while this value was calculated as 4.49 kg for the PV/T system. Furthermore, the amount of hydrogen production was calculated as 4.59 kg for a 65 °C operation temperature. The electrical, thermal and total energy efficiencies of the PV/T system, which were obtained hourly on a daily basis, were calculated and varied between 12–13.8%, 36.1–45.2% and 49.1–58.4%, respectively. The hourly exergy analyses were also carried out on a daily basis and the results showed that the exergy efficiencies changed between 13.8–14.32%. The change in the electrolysis voltage was investigated by changing the current and temperature in the ranges of 200–1600 mA/cm2 A and 30–65 °C, respectively. While the current and the water temperature varied in the ranges of 400–2350 mA/cm2 and 28.1–45.8 °C respectively, energy efficiency and exergy efficiency were in the ranges of 57.85–69.45% and 71.1–79.7%, respectively.

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Simulation of hydrogen production system with hybrid solar collector

Cited by 23 publications

References 14 publications

Comparison of Central and Individual Heating Systems Used for Heating Housings

Comparison of Central and Individual Heating Systems Used for Heating Housings

Multi‐objective optimization of a novel supercritical CO ₂ cycle‐based combined cycle for solar power tower plants integrated with SOFC and LNG cold energy and regasification

Hydrogen Generation from a Small-Scale Solar Photovoltaic Thermal (PV/T) Electrolyzer System: Numerical Model and Experimental Verification

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Simulation of hydrogen production system with hybrid solar collector

Cited by 23 publications

References 14 publications

Comparison of Central and Individual Heating Systems Used for Heating Housings

Comparison of Central and Individual Heating Systems Used for Heating Housings

Multi‐objective optimization of a novel supercritical CO 2 cycle‐based combined cycle for solar power tower plants integrated with SOFC and LNG cold energy and regasification

Hydrogen Generation from a Small-Scale Solar Photovoltaic Thermal (PV/T) Electrolyzer System: Numerical Model and Experimental Verification

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Multi‐objective optimization of a novel supercritical CO ₂ cycle‐based combined cycle for solar power tower plants integrated with SOFC and LNG cold energy and regasification