|
|
Dynamic model of a heat pump with plate heat exchangers and ecological refrigerant
Strmiska, Pavel ; Řehák Kopečková, Barbora (referee) ; Pokorný, Jan (advisor)
For the optimization of a heat pump, there is a need to possess its dynamic model. One of the freely available tools for creating such a model is the language Modelica and its open-source compiler OpenModelica. The thesis aims to research options for creating dynamic models of refrigeration circuits with the ecological refrigerant R290 and its components in Modelica, to create the circuit and subsequently validate it using previously measured data. Models of basic components of heat pumps - compressor, condenser, evaporator and expansion valve are created in a way described in the thesis. A simplified model of a refrigerant loop is also created
|
|
|
Examining the Impact of Demand-Side Management Through Dynamic Simulation: Integrating Smart-Grid-Ready Control of Residential Heat Pumps
Horváth, Miklós ; Takács, Zoltán ; Gergely, László Zsolt
This paper investigates the suitability of air-to-water heat pumps for smart grids, with a particular focus on load shifting. The research uses dynamic building energy simulations to show that the utilisation of these features effectively addresses the energy consumption challenges of heat pumps while ensuring that heating and domestic hot water demands are met. The implemented control system successfully shifts the morning and evening peaks to the daytime period, resulting in a modest 2% increase in total energy demand.
These results not only demonstrate the balancing of heat pump energy consumption, but also provide insights for the development of objective functions. Such functions can play a key role in supporting the smooth integration of renewables into the wider energy framework.
|
|
|
Dynamically balanced resonance adhesive tester
Jandásek, Martin ; Růžička, Bronislav (referee) ; Mazůrek, Ivan (advisor)
This diploma thesis is dedicated to the development of mobile resonance-adhesion tester TriTec. The aim of this thesis is to improve the parameters of the tester in comparison to the previous version of tester, especially to minimize the vibrations of the tester while running without load, and to the make long-distance transportation of tester easier. The first part of thesis was aimed on history of development of TriTec tester, causes of it´s problems and on analysis of vibration minimization possibilities. As a best solution is considered a rotational balance mechanism, which was designed in next part of thesis. After that a new front wheel drive and an user interface conception were designed. The modified tester reaches all the deserved parameters and is able to compete static resonance-adhesion testers by it´s lower price and high mobility.
|
|
|
Skip loader NKR130V
Derka, Lukáš ; Ospalík, Zdeněk (referee) ; Kašpárek, Jaroslav (advisor)
This master’s thesis deals with a strength analysis of the main frame and loading arms of a skip loader. For a calculation of load states is used a dynamic simulation and its results are used as a boundary conditions for the strength analysis using finite element method (FEM). The results of the analysis is evaluated and on theirs basis are designed a construction improvements. The part of the thesis is drawings documentation of the construction improvements.
|
|
|
The trailer for a chipper
Poul, Ondřej ; Robotka, Tomáš (referee) ; Kašpárek, Jaroslav (advisor)
The goal of this thesis is structural design of the trailer for a LASKI chippers and to create a construction drawings. Important part is information about legislation rules, which this trailer has to fulfill. The aim of this work is to do a dynamic simulation using multi-body system. Results of this simulation are used for a stress analysis witch using a fine element method.
|
|
|
Trailer frame VARIANT 200 for transport cabel spools
Blažek, Jaroslav ; Kašpárek, Jaroslav (referee) ; Kašpárek, Jaroslav (advisor)
The aim of this thesis is an analysis of the construction of a cable trailer VARIANT 200. For the calculation of load states was used a multi body system in program MSC.ADAMS. The results from these calculations were used as lifting conditions for strength control with finite element method (FEM). All acquired results were analysed and according to them changes were made to the frame construction. Part of this thesis contains drawings documenting the above mentioned changes.
|
|
| |
|
|
Frequency Stability Assessment of Continental Europe Synchronous Area on Equivalent Model
Macejko, Stanislav ; Hába, Tomáš (referee) ; Koudelka, Jan (advisor)
This thesis deals with frequency stability, system disturbances and their dynamic simulation. The aim of the work was to create a single-machine equivalent and single node model for the simulation of the system disturbance from January, 8, 2021 in MODES network simulator. The thesis describes in detail created models and achieved simulation results, which are the frequency deviation waveforms. The simulation results are compared with the actual behaviour of the power system. The thesis further discusses the use of the models and suggests further improvements.
|
|
|
Simulation of CNC machine tool spindle in ADAMS software
Pham, Jakub ; Holub, Michal (referee) ; Tůma, Jiří (advisor)
The bachelor thesis deals with the design of a simulation model of a CNC machine tool in MSC ADAMS software. Nowadays, simulations have become an integral part of every development process, as they offer a cost-effective alternative to classical machine development involving prototyping. Within machine tools, dynamic simulation of machine nodes is one of the unexplored areas. The aim of this work is to verify their functionality and reliability in this area. Within the scope of the bachelor thesis, a research on dynamic system simulations, the finite element method and the simulation software MSC Adams and Ansys has been carried out. In the practical part, the spindle loading of the MCV 754 Quick machine tool was designed. Subsequently, the model geometry and boundary conditions were determined and the spindle was simulated during the cutting process in MSC ADAMS. The simulation results were verified by both analytical calculation and experimental measurements on the machine. Furthermore, the concept of further development of the model within the framework of cosimulation was presented. Finally, all output parameters were compared and evaluated.
|
|
|
Predictive Simulation as a Tool for Decision Making Support
Horák, Michal ; Hruška, Tomáš (referee) ; Videcká, Zdeňka (advisor)
The bachelor's thesis focuses on analysis and optimization of the assembly line of gear pumps. The bachelor's thesis contains a suggestions for changes on this assembly line in order to balance the line and optimize utilization of operators on the line. The solution uses a dynamic simulation model that corresponds with the real state of the line. The simulation model is further used for experiments and selection of the ideal solution with respect to the selected objectives
|
guest ::
