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Recycling of PV panels
Cingel, Štefan ; Vaněk, Jiří (referee) ; Jandová, Kristýna (advisor)
This bachelor thesis focuses in its first part on the distribution of PV cells, their development and production processes. There are also generally described recycling methods and their basic division and the species that are commonly used. Finally, the thesis also mentions the current state of PV panels in the Czech Republic and the related legislative regulation. The second (experimental) part is devoted to the selection of suitable PV modules for recycling. On these panels was performed measuring of the V-A characteristics and electroluminescence analysis. In cooperation with Aquatest was carried out recycling of selected panels, and then on the crushed material was carried out spectral analysis. The last part is an evaluation of recycling from economic and practical aspects.
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Thermal aging of lead-free joints on ceramics
Cingel, Štefan ; Szendiuch, Ivan (referee) ; Adámek, Martin (advisor)
This diploma thesis aims to verify the properties of lead-free solders, which are subjected to accelerated aging by thermal cycling. The theoretical part describes in detail the most used lead-free solders and their characteristics. The next section describes fluxes and their important functions in the soldering process. Intermetallic compounds are also mentioned, which significantly affect the quality and service life of the soldered joint. In the practical parts, the test motif was on two different substrates - corundum ceramics and the widely used substrate FR-4 (Glass fiber fabric saturated with epoxy resin). SAC solder was chosen as the reference solder for the experiment, followed by solder containing bismuth (Sn42 / Bi58) and lead solder (Sn62 / Pb36 / Ag2). Accelerated aging by thermal cycling was performed in the temperature range from -20 ° C to 125 ° C, followed by performing a test of the mechanical strength of the soldered joint by means of a shear test. SnBi solder shows higher mechanical strength at the beginning of testing than SAC solder and lead solder, during temperature cycles, it significantly loses its mechanical properties, this is caused by increasing oxidation of the alloy. SAC solder seems to be promising, which has an almost constant decrease in mechanical strength during all temperature cycles on both corundum and FR-4 substrates.
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Small photovoltaic power station
Cingel, Štefan ; Maule, Petr (referee) ; Vaněk, Jiří (advisor)
This diploma thesis deals with the principle of photovoltaic phenomenon and the distribution of photovoltaic systems. It also informs the reader about the possibilities of using the "Green Savings" subsidy within the program "New Green Savings" of the Ministry of the Environment. Last, but not least, it maps the energetic demands of the family house and, on the basis of it, presents the possible design of the photovoltaic system, including the estimation of the economic return.
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Thermal aging of lead-free joints on ceramics
Cingel, Štefan ; Szendiuch, Ivan (referee) ; Adámek, Martin (advisor)
This diploma thesis aims to verify the properties of lead-free solders, which are subjected to accelerated aging by thermal cycling. The theoretical part describes in detail the most used lead-free solders and their characteristics. The next section describes fluxes and their important functions in the soldering process. Intermetallic compounds are also mentioned, which significantly affect the quality and service life of the soldered joint. In the practical parts, the test motif was on two different substrates - corundum ceramics and the widely used substrate FR-4 (Glass fiber fabric saturated with epoxy resin). SAC solder was chosen as the reference solder for the experiment, followed by solder containing bismuth (Sn42 / Bi58) and lead solder (Sn62 / Pb36 / Ag2). Accelerated aging by thermal cycling was performed in the temperature range from -20 ° C to 125 ° C, followed by performing a test of the mechanical strength of the soldered joint by means of a shear test. SnBi solder shows higher mechanical strength at the beginning of testing than SAC solder and lead solder, during temperature cycles, it significantly loses its mechanical properties, this is caused by increasing oxidation of the alloy. SAC solder seems to be promising, which has an almost constant decrease in mechanical strength during all temperature cycles on both corundum and FR-4 substrates.
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|
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Small photovoltaic power station
Cingel, Štefan ; Maule, Petr (referee) ; Vaněk, Jiří (advisor)
This diploma thesis deals with the principle of photovoltaic phenomenon and the distribution of photovoltaic systems. It also informs the reader about the possibilities of using the "Green Savings" subsidy within the program "New Green Savings" of the Ministry of the Environment. Last, but not least, it maps the energetic demands of the family house and, on the basis of it, presents the possible design of the photovoltaic system, including the estimation of the economic return.
|
|
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Recycling of PV panels
Cingel, Štefan ; Vaněk, Jiří (referee) ; Jandová, Kristýna (advisor)
This bachelor thesis focuses in its first part on the distribution of PV cells, their development and production processes. There are also generally described recycling methods and their basic division and the species that are commonly used. Finally, the thesis also mentions the current state of PV panels in the Czech Republic and the related legislative regulation. The second (experimental) part is devoted to the selection of suitable PV modules for recycling. On these panels was performed measuring of the V-A characteristics and electroluminescence analysis. In cooperation with Aquatest was carried out recycling of selected panels, and then on the crushed material was carried out spectral analysis. The last part is an evaluation of recycling from economic and practical aspects.
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