Methane-Assisted Iron Oxides Chemical Looping in a Solar Concentrator: A Real Case Study

Borghero, Luca; Bressan, Maurizio; Ferrero, Domenico; Santarelli, Massimo; Papurello, Davide

doi:10.3390/catal12111477

Cited by 6 publications

(10 citation statements)

References 41 publications

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“…The system is composed of two motors to allow optimal orientation according to the time of day, and from the geographical coordinates of the site where the CSP is installed (Turin, 45.0676 • N, 7.6563 • E). Other useful geometric and technical parameters are listed in the following table (Table 1) and in previous studies [21,23]. The concentrator-receiver system is built using the Comsol Multiphysics 5.6 Inc. software (Burlington, MA, USA).…”

Section: Methodsmentioning

confidence: 99%

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Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water System

Tursunović,

Papurello

2024

Clean Technol.

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The energy sector is the main source of greenhouse gases, so it has the highest potential for improvement. The improvements can be achieved by generating energy from renewable sources. It is necessary to combine production from renewable sources with storage systems. Thermal energy storage using concentrated solar power systems is a promising technology for dispatchable renewable energy that can guarantee a stable energy supply even in remote areas without contributing to greenhouse gas emissions during operation. However, it must be emphasised that greenhouse gases and other impacts can occur during the production process of concentrating solar system components. This paper analyses the receiver design to produce thermal energy for the existing CSP dish plant at the Energy Center of the Politecnico di Torino. The plant is designed to produce electrical energy in the spring and summer periods. In addition to this energy production, the CSP can be adopted to produce thermal energy, through hot water, during the less favourable periods of the year in terms of global solar radiation. The surface heat flux is calculated in the first part of the analysis to obtain the maximum internal temperature in the receiver, which is 873.7 °C. This value is a constraint for the choice of material for the solar receiver. A life cycle assessment is performed to compare the emissions generated during the production of the main components of the CSP system with the emissions generated by the methane-fuelled water heater to produce the same amount of thermal energy. It can be concluded that the production of the main components of the CSP system results in lower greenhouse gas emissions than the operational phase of a conventional system. Given the assumptions made, the utilization of methane leads to the emission of approximately 12,240 kg of CO2, whereas the production of the CSP system results in emissions totalling 5332.8 kg of CO2 equivalent

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Section: Methodsmentioning

confidence: 99%

“…This occurs most easily in the seasons from spring to autumn. The production of thermal energy is a surplus that is added to the production of electricity [19][20][21][22]. In this study, the CSP dish is integrated with a water storage tank, forming a system designed to provide hot water for integration into the Energy Centre's network.…”

Section: Introductionmentioning

confidence: 99%

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water System

Tursunović,

Papurello

2024

Clean Technol.

Self Cite

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show abstract

“…The system is composed of two motors to allow optimal orientation according to the time of day, and from the geographical coordinates of the site where the CSP is installed (Turin, 45.0676 N, 7.6563 E). Other useful geometric and technical parameters are listed in the following table (Table 1), and in previous studies [18,20]. The concentrator-receiver system is built using Comsol multiphysics Inc. software (Sweden).…”

Section: Methodsmentioning

confidence: 99%

“…This work primarily involves evaluating the performance of an existing CSP dish located at the Energy Center of Politecnico di Torino. One of the main objectives of this study is to also study thermal energy production with the CSP, after previous publications related to the electricity production [16][17][18][19]. The CSP dish is integrated with a water storage tank, forming a system designed to provide hot water for integration into the Energy Centre's network.…”

Section: Introductionmentioning

confidence: 99%

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water Production System

Tursunović,

Papurello

2023

Preprint

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Since the energy sector is the main source of greenhouse gases, it has the highest potential for improvement. Improvements can be achieved by generating energy from renewable sources. Combined with thermal energy storage, concentrating solar power plants represent a promising technology for dispatchable renewable energy, ensuring a stable energy supply even in remote areas without contributing to greenhouse gas emissions during operation. However, it is important to note that greenhouse gases and other polluting emissions may occur during the manufacturing process of concentrating solar power plant components. This work analyses the design of the receiver to produce thermal energy for the existing solar dish CSP plant at the Energy Center of the Politecnico di Torino. The objective of this plant is to produce hot water for a small case study. Considering the average solar irradiance for Turin equal to 800 W/m2, the surface heat flux was obtained from the first part of the analysis, which was used to obtain the maximum internal temperature in the receiver equal to 873.7 °C. The maximum temperature obtained was a constraint for the selection of the material for the solar receiver. Of the various possibilities, copper was chosen. In the second part of the work, a Life Cycle Assessment was carried out to compare the emissions generated during the production of the main components of the CSP plant with the emissions generated by the methane-fuelled water heater that produces the same amount of water as the CSP plant. It can be concluded that the manufacture of the main components of the CSP plant results in lower greenhouse gas emissions than the operational phase of a conventional natural gas-fired water heater (1.6 kg CO2/day).

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“…Considerable improvements, also in terms of cyclability and repeatability must be achieved, not only for solar-driven thermochemical cycles but also for other applications. In the study of Borghero et al, a critical aspect was shown: the difficulty of working under real conditions by the receiver placed in the focal point of a CSP disc [22].…”

Section: Introductionmentioning

confidence: 99%

Solar Disc Concentrator: Material Selection for the Receiver

Perrero,

Papurello

2023

Preprint

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Solar concentration is the ability to harness solar radiation to increase the temperature of a receiver. The receiver is the component into which a heat transfer fluid can be flowed for an ORC system and produce electricity, or it can be used for high-temperature thermal storage, or even to implement thermochemical cycles. The choice of material is critical to ensure optimal performance and long-lasting operation. It is also essential that such material can operate at high temperatures and high thermal gradients. In short, material identification involves high thermal stresses that result in structural deformation. Different metal alloys were used to verify that the yield strength limit was not exceeded due to thermal stress induced by concentrated solar radiation. The problem was implemented in Matlab starting from the general heat equation. The purpose is to test whether thermal stress exceeds the yield strength, which is the condition in which elastic bonds in the material are changed, causing deformation. The best material identified was Inconel 740H, which had a high yield strength value and the lowest temperature difference. Under extreme working conditions, it can withstand thermally induced shocks.

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Methane-Assisted Iron Oxides Chemical Looping in a Solar Concentrator: A Real Case Study

Cited by 6 publications

References 41 publications

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water System

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water System

Design of a Solar Dish Receiver and Life Cycle Assessment of a Hot Water Production System

Solar Disc Concentrator: Material Selection for the Receiver

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