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Infrastructure for electric buses
Adamec, Matěj ; Rekem, Jakub (referee) ; Štětina, Josef (advisor)
The aim of this bachelor thesis is to examine the charging infrastructure of electric buses from the point of view of dynamically charged buses, trolleybuses, statically charged battery electric buses and their combination in the form of partial buses. In the case of the trolleybus infrastructure, the method of powering the contact wire traction, the properties of the contact wire are described, and the operation of partial buses are not omitted. For the charging infrastructure of battery buses, a detailed evaluation of the methods of connection to the charging station, charging modes and an overview of offered charging solutions from selected companies is performed. Considerable attention is paid to the possibilities of standardization and automation of connections to charging stations. In the final chapter, an approximate calculation of the optimal capacity of the battery storage for the selected line and the subsequent evaluation of the charging solution of the operating electric buses on this line is performed.
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Effect of light on microalgae growth
Adamec, Matěj ; Sukačová, Kateřina (referee) ; Naď, Martin (advisor)
Light is one of the key elements affecting the growth of photoautotrophic algae in photobioreactors. For optimal cultivation in such a device, sufficient access to light radiation to the microalgae is required sufficient light intensity is needed. In this work, considerable attention is paid to the influence of light during the whole photosynthesis process. Viable solutions for the illumination of the photobioreactor by natural and artificial light are evaluated in detail, including a description of its main parameters. The design of a programmable illumination for a newly designed photobioreactor with eight horizontal tubes and a control calculation of PPFD (Photosynthetic Photon Flux Density) were performed. Afterwards, the designed illumination was implemented on the newly built photobioreactor to evaluate the effect of photoperiod length and LED light coloration on the actual microalgae cultivation. Based on these data, the optimal photoperiod length could be determined, and ratios of 12:12, 18:6, and 24:0 (light phase:dark phase) were tested. Finally, to evaluate the spatial distribution of the photobioreactor illumination, CFD simulations of selected photobioreactor tubes were performed using simulation software ANSYS FLUENT.
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Infrastructure for electric buses
Adamec, Matěj ; Rekem, Jakub (referee) ; Štětina, Josef (advisor)
The aim of this bachelor thesis is to examine the charging infrastructure of electric buses from the point of view of dynamically charged buses, trolleybuses, statically charged battery electric buses and their combination in the form of partial buses. In the case of the trolleybus infrastructure, the method of powering the contact wire traction, the properties of the contact wire are described, and the operation of partial buses are not omitted. For the charging infrastructure of battery buses, a detailed evaluation of the methods of connection to the charging station, charging modes and an overview of offered charging solutions from selected companies is performed. Considerable attention is paid to the possibilities of standardization and automation of connections to charging stations. In the final chapter, an approximate calculation of the optimal capacity of the battery storage for the selected line and the subsequent evaluation of the charging solution of the operating electric buses on this line is performed.
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