Persons at STU
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Basic information about a final thesisAdditional informationAdditional information about the final thesis follows. Click on the language link to display the information in the desired language.
|Language of final thesis:||Slovak|
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|Title of the thesis:||Design and implementation of control system for solar heating of domestic hot water|
|Summary:||Solar water heating is now desired and widespread way of using clean energy sources in the Slovak Republic. Control systems of solar domestic hot water systems are often solved trivially and do not address the safety and efficiency. Doctoral thesis deals with the design and implementation of the control system for solar DHW system with a drain-back tank using passive safety features for evacuated tube collectors. Such a system solves emergency conditions of active indirect fully-filled systems, allowing the system regeneration to the operating state without operator intervention. However, it brings its own set of issues with more complicated hydraulic circuit and higher demands for control system, as components of the system can no longer be described by a simple system of linear equations.
After the identification of thermodynamic characteristics and parameters of the system components were analyzed and described transient effects in the system, caused by a variation of the solar collector and drain-back tank parameters when starting and stopping the system. The simulation model of the system with drain-back tank control was created based on the parameters of the real system, which was subsequently compared. The comparison showed that the model adequately precisely describes the phenomenon taking place in the real system. In the final part of this thesis is described concept of hardware and software solutions for control system. This proposal extends the widely used solution with sensors for measuring additional parameters and provides their principal connections to the controller. Thesis brings new knowledge, improvements and suggestions for expanding the control system of solar DHW systems with drain-back tank.
|Key words:||drain-back, simulation model, solar collector|
To display the final thesis assignment form click on the Display the final thesis assignment form icon. The following icons - Final thesis, Thesis appendices, Supervisor's review, Opponent's review - relate to the final thesis and can be downloaded. They could be displayed on condition they have been inserted and are available publicly.Parts of thesis with postponed release:
|–||Final thesis (final thesis appendices) unlimited|
|–||Reviews for final thesis unlimited|