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Mathematical Model of Biomass Boiler for Control Purposes
Máša, Vítězslav ; Klemeš,, Jiří (referee) ; Olehla, Miroslav (referee) ; Švarc, Ivan (advisor)
he thesis focuses on building of dynamic mathematical model of biomass boiler as a controlled system and the use of this model in practise. At the first part of the thesis the area of energy production using biomass is introduced and the current development at the area of the automatic control of biomass boilers with medium energy output (in units of MW) is described. Although the main topic of the thesis is the construction of model of biomass boiler for control purposes, thesis deals with technology of boilers and principles of its inner processes as well. Creation of the model comes out not only from these important findings, but also from experimental data collected during measurements in real operation. Heat and mass balance calculations were made according to these data and they serve to precise static properties of experimental unit for biomass combustion. Central part of the thesis presents development of the final model that resulted from balance calculations and from step responses of the system obtained by measuring. Built dynamic model is compared with experimental data through simulations in Simulink and verified. At the next part the model of controlled system is completed with control system and closed-loop control circuit is validated and verified by simulation. Then the design of new controller configuration, which improves the quality of control considerably, is presented. At the final part of the thesis, possibilities of other use of the model of boiler are given, both in control theory and in industrial practice.
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Heat and mass balance model of unit for biomass combustion
Tomšů, Ondřej ; Pavlas, Martin (referee) ; Máša, Vítězslav (advisor)
This work deals with the creation of a mathematical model for calculating mass and energy balances of the energy units for utilizing the biomass combustion by computational software W2E and it is engaged in necking the validity of the balance model for the real technology unit for combustion different types of biomass. There are presented basic informations of balances and described the procedure how to solve balance calculations of energy units. Introductory part deals with biomass as a renewable energy source, which has a large potential in energy system. There are presented all its important parameters, its types, methods of treatment and utilization power production. Next chapters focus on biomass combustion devices, theirs classification and theirs technological principles. For the specific type of biomass boiler (of capacity 1 MW with movable, inclined grid) - here was created balance model. The choice of this equipment is preferred primarily by the fact that the middle capacity power boilers can be considered as the most suitable heat sources in terms of efficient combustion of biomass. Another motivation is a key objective of this work, which is creation of balance model of the unit which energy utilizes of biomass, which belong into this category of heat sources and is available for real measurements. There are presented the available computing systems for balance modeling with the preference of the analysis program W2E and MS Excel. They are verified as the best instruments for creation balance model at the practical chapter of this work. The main output of presented thesis is thus balance model developed in W2E program which has been compared and modified to the real characteristics of biomass boiler. For this purpose were used the archived data from previous measurements and new actual measurements, which focused on the acquisition of the missing operational data and verifying the reasons of variance of the model and real status. In the conclusion, there are evaluated the basic operating parameters of the technology in various operating states by W2E analysis model.
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Cooperation of gas boiler and heat pump in the heating system
Kunert, Šimon ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This master’s thesis deals with the cooperation of gas boiler and heat pump in heating system. It contains a brief description of both device and hybrid variant. The aim of this thesis is to create a balance model that helps primary monitor the released CO2 emission and operating costs. The subsequent parametric study seeks the optimal setting of cooperation for both monitored parameters. The results are compared with gas boiler heating or heat pump air to water. The last part is developed to find the optimal setting for a particular object.
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Water management analysis of reservoir under climate change
Smolík, Lukáš ; Benáčková, Kateřina (referee) ; Marton, Daniel (advisor)
The presented bachelor thesis is focused on the analysis of impacts of climate change on the water reservoir. The work consists of several partial steps. The first step is the calibration of the balance of the hydrological model to the current climatic and hydrological conditions. The next step is the construction of hydrological time series burdened by climate change. That the calibrated model was compiled, it must be used calibrated balance model and climatic data loaded climate change. Selected emission scenario used in the work of the emission scenario RCP4.5 the final step of the work is to analyze the reservoir volume by using the simulation model of the tank and its evaluation in view of possible future climate change. The functionality of the described procedures will be verified for the analysis of impacts of climate change on the reservoir capacity of the reservoir in the defended Hanušovice profile in the Morava river basin.
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Cooperation of gas boiler and heat pump in the heating system
Kunert, Šimon ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This master’s thesis deals with the cooperation of gas boiler and heat pump in heating system. It contains a brief description of both device and hybrid variant. The aim of this thesis is to create a balance model that helps primary monitor the released CO2 emission and operating costs. The subsequent parametric study seeks the optimal setting of cooperation for both monitored parameters. The results are compared with gas boiler heating or heat pump air to water. The last part is developed to find the optimal setting for a particular object.
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Water management analysis of reservoir under climate change
Smolík, Lukáš ; Benáčková, Kateřina (referee) ; Marton, Daniel (advisor)
The presented bachelor thesis is focused on the analysis of impacts of climate change on the water reservoir. The work consists of several partial steps. The first step is the calibration of the balance of the hydrological model to the current climatic and hydrological conditions. The next step is the construction of hydrological time series burdened by climate change. That the calibrated model was compiled, it must be used calibrated balance model and climatic data loaded climate change. Selected emission scenario used in the work of the emission scenario RCP4.5 the final step of the work is to analyze the reservoir volume by using the simulation model of the tank and its evaluation in view of possible future climate change. The functionality of the described procedures will be verified for the analysis of impacts of climate change on the reservoir capacity of the reservoir in the defended Hanušovice profile in the Morava river basin.
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Mathematical Model of Biomass Boiler for Control Purposes
Máša, Vítězslav ; Klemeš,, Jiří (referee) ; Olehla, Miroslav (referee) ; Švarc, Ivan (advisor)
he thesis focuses on building of dynamic mathematical model of biomass boiler as a controlled system and the use of this model in practise. At the first part of the thesis the area of energy production using biomass is introduced and the current development at the area of the automatic control of biomass boilers with medium energy output (in units of MW) is described. Although the main topic of the thesis is the construction of model of biomass boiler for control purposes, thesis deals with technology of boilers and principles of its inner processes as well. Creation of the model comes out not only from these important findings, but also from experimental data collected during measurements in real operation. Heat and mass balance calculations were made according to these data and they serve to precise static properties of experimental unit for biomass combustion. Central part of the thesis presents development of the final model that resulted from balance calculations and from step responses of the system obtained by measuring. Built dynamic model is compared with experimental data through simulations in Simulink and verified. At the next part the model of controlled system is completed with control system and closed-loop control circuit is validated and verified by simulation. Then the design of new controller configuration, which improves the quality of control considerably, is presented. At the final part of the thesis, possibilities of other use of the model of boiler are given, both in control theory and in industrial practice.
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Heat and mass balance model of unit for biomass combustion
Tomšů, Ondřej ; Pavlas, Martin (referee) ; Máša, Vítězslav (advisor)
This work deals with the creation of a mathematical model for calculating mass and energy balances of the energy units for utilizing the biomass combustion by computational software W2E and it is engaged in necking the validity of the balance model for the real technology unit for combustion different types of biomass. There are presented basic informations of balances and described the procedure how to solve balance calculations of energy units. Introductory part deals with biomass as a renewable energy source, which has a large potential in energy system. There are presented all its important parameters, its types, methods of treatment and utilization power production. Next chapters focus on biomass combustion devices, theirs classification and theirs technological principles. For the specific type of biomass boiler (of capacity 1 MW with movable, inclined grid) - here was created balance model. The choice of this equipment is preferred primarily by the fact that the middle capacity power boilers can be considered as the most suitable heat sources in terms of efficient combustion of biomass. Another motivation is a key objective of this work, which is creation of balance model of the unit which energy utilizes of biomass, which belong into this category of heat sources and is available for real measurements. There are presented the available computing systems for balance modeling with the preference of the analysis program W2E and MS Excel. They are verified as the best instruments for creation balance model at the practical chapter of this work. The main output of presented thesis is thus balance model developed in W2E program which has been compared and modified to the real characteristics of biomass boiler. For this purpose were used the archived data from previous measurements and new actual measurements, which focused on the acquisition of the missing operational data and verifying the reasons of variance of the model and real status. In the conclusion, there are evaluated the basic operating parameters of the technology in various operating states by W2E analysis model.
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Analysis of different approaches to determining the administrative burden on business
Potúček, Martin ; Pavel, Jan (advisor) ; Vítek, Leoš (referee)
This thesis focuses on the performance of different methods of determining the administrative burdens. There is defined the concept of the administrative burden and there are described selected approaches to its identification and measuring: Doing Business Index, Standard Cost Model (SCM), qualitative research and other alternative methods. These approaches have been used in practice to determine the burden of the selected company. The recommendation, which approach should be preferred, is based on, among other things, the outcome of using different approaches in practice.
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