Electro-Kinetic Pumping with Slip Irreversibility in Heat Exchange of CSP-Powered Bio-Digester Assemblies

Ogedengbe, Emmanuel O.; Rosen, Marc A.

doi:10.3390/e14122439

Cited by 8 publications

(7 citation statements)

References 25 publications

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“…The use of the multivariate regression approach is dependent on and limited by the availability of site and billing data. The decision to use a regression analysis technique should be based on the availability of environmental and power data, in order to develop a reliable model for planning and design of an integrated renewable conversion energy system [13].…”

Section: Building Energy Management Systemmentioning

confidence: 99%

Flexibility of Organic Thermoelectric Material for Photovoltaic Solar Energy Management and Conversion

Ogedengbe¹,

Igbekoyi²,

Bakare³

et al. 2018

TOEFJ

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Objective:The flexibility on a design maneuvering of building automation systems with the integration of organic solar cells is investigated.Methods:The energy demand load of the Engineering Lecture Theatre (ELT) at the University of Lagos is analyzed and parametric studies of the heat and charge transport within aMimosa pudicabased solar wafer are conducted, along with the modelling of a network of microchannels. A walk-through energy audit of all the devices that are installed or operated within the ELT and the thermophysical properties of the building envelope are considered, with the aim of satisfying the ASHRAE standard for thermal comfort and indoor air quality. A two-dimensional finite volume formulation of the heat and charge transfers within the boundaries of the flexible laminate and the organic extract is utilized.Result:Parametric analysis of the flow phenomenon and temperature distribution, especially across the wafer, at various operating conditions helps to determine significant design criteria, and assists in confirming the feasible power performance of the organic solar cell for building energy management.Conclusion:The results are anticipated for the design of reliable building automation systems for effective demand side monitoring, and for estimation of the economic viability of a proposed development of hybrid organic-inorganic based solar energy system for independent power generation within the Faculty of Engineering.

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Section: Building Energy Management Systemmentioning

confidence: 99%

Flexibility of Organic Thermoelectric Material for Photovoltaic Solar Energy Management and Conversion

Ogedengbe¹,

Igbekoyi²,

Bakare³

et al. 2018

TOEFJ

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“…This device is an assembly of subsystems: solar micro-collector, downdraft gasifier, feedstock collector/homogenizer, and methane synthesizer. Such a system has been applied in a university cafeteria (Ogedengbe and Rosen, 2012). In this methane production plant, heat is transferred from the solar micro-collector for use in subsystems like the downdraft gasifier and the feedstock collector/homogenizer.…”

Section: Introductionmentioning

confidence: 99%

“…The food waste is fed into the gasifier as a moisture-rich liquid, known as a slurry. This process requires the design of a thermally controlled storage and homogenizing subsystem, where the time lag between food waste collection and its digestion is automated (Ogedengbe and Rosen, 2012). The production of methane depends on the capacities of the methane synthesizer and the gasifier subsystems, which are designed based on the estimated supply of food waste (Ogedengbe and Rosen, 2012).…”

Section: Introductionmentioning

confidence: 99%

Performance Characterization of Gas-Solid Cyclone for Separation of Particle from Syngas Produced from Food Waste Gasifier Plant

Ibhadode

Ogedengbe

Rosen

2017

European Journal of Sustainable Development Research

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A biofuel from any biodegradable formation process such as a food waste bio-digester plant is a mixture of several gases such as methane (CH4), carbon dioxide (CO2), hydrogen sulfide (H2S), ammonia (NH3) and impurities like water and dust particles. The results are reported of a parametric study of the process of separation of methane, which is the most important gas in the mixture and usable as a biofuel, from particles and H2S. A cyclone, which is a conventional, economic and simple device for gas-solid separation, is considered based on the modification of three Texas A&M cyclone designs (1D2D, 2D2D and 1D3D) by the inclusion of an air inlet tube. A parametric sizing is performed of the cyclone for biogas purification, accounting for the separation of hydrogen sulfide (H2S) and dust particles from the biofuel. The stochiometric oxidation of H2S to form elemental sulphur is considered a useful cyclone design criterion. The proposed design includes geometric parameters and several criteria for quantifying the performance of cyclone separators such as the Lapple Model for minimum particle diameter collected, collection efficiency and pressure drop. For biogas volumetric flow rates between 0 and 1 m/s and inlet flow velocities of 12 m/s, 15 m/s and 18 m/s for the 1D2D, 2D2D and 1D3D cyclones, respectively, it is observed that the 2D2D configuration is most economic in terms of sizing (total height and diameter of cyclone). The 1D2D configuration experiences the lowest pressure drop. A design algorithm coupled with a user-friendly graphics interface is developed on the MATLAB platform, providing a tool for sizing and designing suitable cyclones.

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“…In a continuous processing system, digesters are equipped with a preparation tank where various substrates are mixed and prepared for loading [2]. The feedstock production, storage and supply are important parts of the bio-mass to bio-energy conversion chain [5]. In an organic waste biodegradability [6] homogenized a waste mixture (85% food waste) with a mechanical mixer for two and a half hours at 60 °C before it was subjected to pasteurization and thermal hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

Mixing Performance of a Suspended Stirrer for Homogenizing Biodegradable Food Waste from Eatery Centers

2014

Self Cite

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Numerical simulation of a suspended stirrer within a homogenizing system is performed towards determining the mixing performance of a homogenizer. A two-dimensional finite volume formulation is developed for the cylindrical system that is used for the storage and stirring of biodegradable food waste from eatery centers. The numerical solver incorporates an analysis of the property distribution for viscous food waste in a storage tank, while coupling the impact of mixing on the slurry fluid. Partial differential equations, which describe the conservation of mass, momentum and energy, are applied. The simulation covers the mixing and heating cycles of the slurry. Using carrot-orange soup as the operating fluid (and its thermofluid properties) and assuming constant density and temperature-dependent viscosity, the velocity and temperature field distribution under the influence of the mixing source term are analyzed. A parametric assessment of the velocity and temperature fields is performed, and the results are expected to play a significant role in designing a homogenizer for biodegradable food waste.

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Electro-Kinetic Pumping with Slip Irreversibility in Heat Exchange of CSP-Powered Bio-Digester Assemblies

Cited by 8 publications

References 25 publications

Flexibility of Organic Thermoelectric Material for Photovoltaic Solar Energy Management and Conversion

Flexibility of Organic Thermoelectric Material for Photovoltaic Solar Energy Management and Conversion

Performance Characterization of Gas-Solid Cyclone for Separation of Particle from Syngas Produced from Food Waste Gasifier Plant

Mixing Performance of a Suspended Stirrer for Homogenizing Biodegradable Food Waste from Eatery Centers

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