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Management of Heating Energy at Home
Dohnal, Stanislav ; Grepl, Jan (referee) ; Kříž, Jiří (advisor)
The aim is to adapt the old heating system so that the new system will meet the needs of users and facilitate control of system. The new heating system can independently control heating automatically. Its important part is remote access to system control. The user always has up-to-date information and can adjust the heating to suit his needs.
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Temperature changes in lead-acid batteries
Grepl, Jan ; Chladil, Ladislav (referee) ; Bača, Petr (advisor)
The aim of this thesis is familiarization with the basic lead-acid batteries construction with specialization on their differences. This work is divided in theoretical part and practical part. At first, the theoretical part deals with basics of functions of electrochemical cells and their fundamental division. In the case of lead-acid batteries the work focuses on the fundamental chemical reactions and fundamental principle of their construction. Aftwerwars are also in this part included negative phenomena, which can occur during the operation of the lead-acid batteries and possibly decrease their capacity or shorten their lifetime period. In practical part takes part description of measuring station. Subsequently is realised the correction of masurement sensors. Finally there takes place an analysis of measured parameters in experimental cell in CC and CC/CV charging mode.
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Defects of railway embankments resulting from their widening in the past
Buzgóová, Ivana ; Grepl, Jan (referee) ; Štefaňák, Jan (advisor)
First chapter of this master's thesis describes specific features of railway embankments in the past and it creates basics for appropriate understanding of following parts. Next, historical development of dimensions of railway platform is introduced. Historical development of dimensions is expected to be a possible reason in field of defects of embankments. Separate chapter refers to various locations in Czech republic where defects of railway embankments can be detected. Description contains not only defects of embankments but also ways of rehabilitation that were performed. Subsequently, the methods of rehabilitation of railway embankments are stated in regard to SŽ S4. In second part of the master's thesis, rehabilitation arrangement of particular railway embankment is designed. It is situated in Česká Kamenice in Děčín region. A numerical simulation of embankment is carried out in Plaxis 2D. The description of model and acquired results are given.
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Management of Heating Energy at Home
Dohnal, Stanislav ; Grepl, Jan (referee) ; Kříž, Jiří (advisor)
The aim is to adapt the old heating system so that the new system will meet the needs of users and facilitate control of system. The new heating system can independently control heating automatically. Its important part is remote access to system control. The user always has up-to-date information and can adjust the heating to suit his needs.
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