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Failure analysis based on measurement of vibrometric data
Jánoš, Vít ; Klusáček, Stanislav (referee) ; Šedivá, Soňa (advisor)
This paper deals with the analysis of vibration data from a screw compressor. A single axis piezoelectric sensor is used for the measurements. Within the scope of this work, a software is developed to retrieve the measured data through REST API and perform further processing such as frequency spectrum analysis, envelope analysis or signal cepstrum calculation. An algorithm to compute a fast kurtogram has also been implemented. Kurtogram is used for determination of demodulation band prior to envelope analysis The measured data and the indicators from the analyses are stored in a database.
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Compressors for refrigeration equipment
Perejda, Michal ; Sekanina, Bohumil (referee) ; Štětina, Josef (advisor)
The work is devoted to the problematic of compressors for refrigeration equipment with a focus on industrial refrigeration and medium performance output requirements. Reader receives a basic overview of the construction, operating cycle, pressure and temperature process and the compressor performance control options of the three in engineering practice most common types of compressors: reciprocating, screw and scroll. It describes the basic elements and actions of the cooling circuit within the information range most important for understanding the compressor operating cycle. This work includes thermodynamic analysis of the reciprocating compressor working cycle and shows practical application of compression device in real operation. The goal of this work is to provide the reader with a description of the thermodynamic process in the compressor, a comprehensive and systematic overview of the types of compressors used in practice and compare their characteristics, advantages and disadvantages.
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Compressors for refrigeration equipment
Perejda, Michal ; Sekanina, Bohumil (referee) ; Štětina, Josef (advisor)
The work is devoted to the problematic of compressors for refrigeration equipment with a focus on industrial refrigeration and medium performance output requirements. Reader receives a basic overview of the construction, operating cycle, pressure and temperature process and the compressor performance control options of the three in engineering practice most common types of compressors: reciprocating, screw and scroll. It describes the basic elements and actions of the cooling circuit within the information range most important for understanding the compressor operating cycle. This work includes thermodynamic analysis of the reciprocating compressor working cycle and shows practical application of compression device in real operation. The goal of this work is to provide the reader with a description of the thermodynamic process in the compressor, a comprehensive and systematic overview of the types of compressors used in practice and compare their characteristics, advantages and disadvantages.
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