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Vertical ground exchangers as a source of energy
Mašek, Lukáš ; Neuberger, Pavel (advisor) ; Daniel, Daniel (referee)
The dissertation on the topic of "vertical ground heat exchangers as a source of energy" deals with boreholes as a source of energy for the heat pump. In the chapter "The current state" is gradually described problems geothermal energy, open and closed systems, the distribution of thermal boreholes by construction and at the end of the chapter focuses on the thermal test wells. In the chapter "Methodology", in the theoretical part are zoomed simplistic relationships that describe the heat conduction around the borehole, analytical models, numerical models and a combination of numerical and analytical models that are able to describe two or three-dimensional conditions. In the experimental part of this chapter is given space characteristics of the place of measurement and definition of terms attenuation depth and heat transfer coefficient. The final chapter of the dissertation "Results and discussion" presents concrete results.
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Soil Massif as Source of Energy
Pauli, Pavel ; Neuberger, Pavel (advisor) ; Ivan, Ivan (referee)
The dissertation with the topic Ground as an Energy Source discusses the utilisation of horizontal heat exchangers as sources of heat at low temperature for heat pumps. Chapter Current Situation in the Field describes the environmental properties of heat pumps, the effects existing in the ground and the individual types of ground heat exchangers.
Chapter Objectives and Hypotheses of the Dissertation lays down the individual hypotheses of the research and the objectives of the dissertation. The theoretical part of the Set of Methods chapter gives an understanding of the mathematical relationships describing the theory of heat sharing in the ground, the measurement methods, the method of processing experimental data, and the measuring instruments used. The Results and Discussion chapter includes the basic findings and opinions processed on the basis of values measured.
The final chapter Conclusions and Recommendations for Practical Use comments on the results achieved and elaborates on utilising horizontal heat exchangers in practice.
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Modern methods of the thermal insulation of buildings
Koukl, Lukáš ; Kic, Pavel (advisor) ; Neuberger, Pavel (referee)
The thesis deals with the evaluation of thermal properties of buildings and their possible improvement. The work includes a summary of the different types of materials used in construction and insulation to minimize heat losses through transmission. Work involves the calculation of heat loss of the house, alternative solutions to improve its thermal properties and compared concept solutions with modern construction. At the end of the work.is peformed comparison of the existing building with the proposed alternatives for improvement.
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Assessment of the impact of thermal insulation on the energy performance of buildings
Zdeněk, Stanislav ; Adamovský, Radomír (advisor) ; Neuberger, Pavel (referee)
There are designed three types of thermal insulation of family house which covered 148 m2. Different possibilities of thermal insulation usage and technical specifications are analysed in the theoretical part of the thesis.
The option swith the different type of thermal insulation are put in following order. The cheapest one with low energy efficiency is the first option andthe building with higher initial costs andhigh level of the energy efficiency is last option.
Every option of building insulation is compared on the basis of few parameters. The fist calculation deals with complex analysis of the construction influenced by heat transfer. The second part of calculation specifies the analysis of Energy Performance of the designed building and thermal transmittance for each defined type of thermal insulation of the designed buildings.
The goal of this bachelor thesis is to consider the higher initial costs invested to the thermal insulation due to lower operating costs, which helps sooner recovery of investment.
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Economic aspects of appreciation energy sources for heat pumps
Netolička, Jan ; Adamovský, Radomír (advisor) ; Neuberger, Pavel (referee)
This bachelor thesis deals with heat pumps. The individual chapters of the theoretical part describe the principle parameters of evaluation used to allow comparison. Heat pumps are divided to individual systems, and there is a quite big part of the bachelor thesis which describes low-temperature resources that are necessary for heat pumps. Claiming that occur in the theoretical part, then prove processed tables and have created charts in the chapter dealing with the economic evaluation. Primarily, the bachelor thesis deals with the evaluation of the cost of installing heat pumps. To illustrate the issue there is also mentioned the economic comparison of heat pumps and other fossil sources of heat.
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Drying of moist materials at low temperatures
Gregor, Jakub ; Neuberger, Pavel (advisor) ; Adamovský, Radomír (referee)
The aim of this work was to develop a literature review on the issue of drying moist materials at low temperatures. The first part is devoted to an overview of drying theory, distribution and classification of dryers and a brief analysis of the most common of them. There is also addressed the issue of the effect of temperature on the dried material and the nature of low-temperature drying.
The second part of the research is concerned with the broadest current method of drying at a low temperature, which is called lyophilisation. There is mentioned principle of the method, the process of drying, processing equipment, methods and examples of activities and overview of key manufacturers.
The third part is devoted to other drying techniques that can be used for effective drying at low temperature and their comparison.
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Verification of thermal conductivity of wood materials
Kostka, Petr ; Neuberger, Pavel (advisor) ; Adamovský, Radomír (referee)
This diploma thesis deals with verifying the thermal conductivity and other thermophysical properties of different types of wood (spruce, oak, ash and maple). A special device ISOMET 2104, which is based on dynamic method of measurement, was used. Three different samples for each type of wood were used (for example, different age of trees). Values of the thermal conductivity, the thermal diffusivity and the specific heat capacity, depending on the gradually decreasing moisture of wood, were obtained. The key point of this study was finding that the values of thermophysical properties of wood materials vary significantly depending on the age, growing conditions, properties of the soil and other factors. Some of the data correspond with previously published studies but other data are in contrast to them.
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Energy and economic effects of the heat pumps use
Junek, Marek ; Adamovský, Radomír (advisor) ; Neuberger, Pavel (referee)
The thesis deals with the use of heat pumps, because of the need for better energy management of all kinds. The focus of this work is also focused on the history of the development of heat pumps, as well as search through all types of pumps, physical principles to the design of optimal heat pump. Information in this work should shed light on the various myths that circulate about heat pumps and bring them to debunk and to assess the suitability of the heat pump and its design.
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Use of secondary heat ventilation air in multifunctional building
Dvořák, Jan ; Adamovský, Radomír (advisor) ; Neuberger, Pavel (referee)
This work deals with the theme of heat recovery from waste air and moisture recovery in residential areas. In a brief introduction, introduces the reader to various aspects of the energy system of choice due to the location and method of application equipment for heat recovery. In the following chapters is described theoretically transfer heat exchanger and determination exchanger efficiency, along with the search components including the basic distribution of each kind secondary heat recovery coils. Part of the theory is evaluating the effectiveness of the use of heat recovery equipment. The second part is solved draft multipurpose building consisting of a concert hall and the administrative section of the building. According to the resulting requirements for air-conditioning equipment has been selected with the described type of heat exchanger. Follow economic evaluation facility and the conclusion. The attachment is plan with a description of the location of equipment in the building.
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Heat sources for low temperature heating systems
Vyskočil, Petr ; Adamovský, Radomír (advisor) ; Neuberger, Pavel (referee)
The goal of this bachelor´s work is to analyse heat sources which is suitable for low temperature heating systems and to descript of main principles and kinds of this heating. The work is divided in five main parts. The first (most extensive) part is description of the history of heat pump, its principle, working substances and basic sources of low potencional energy. The second part of the work is explanation of principles of condensing boiler and natural gas combustion with regard to combustion efficiency. Basic structural elements are included in third section of this work. Next section is discusion of the author´s view on this issue. Is evident from this work that none of this heating system is better in term of advantages and disadvantages. But intension of thist work is primarily description of this advantages and disadvanages.
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