• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 476
  • 27
  • 20
  • Tagged with
  • 523
  • 363
  • 82
  • 76
  • 58
  • 50
  • 50
  • 48
  • 44
  • 44
  • 44
  • 38
  • 35
  • 35
  • 34
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
251

Intenzifikace čistírny odpadních vod v obci Krumsín / Intensification of the wastewater treatment plant in the village Krumsín

Krejsová, Věra January 2014 (has links)
The task of this master thesis was assessment of the possibility of intensification of biological ponds, which are used for wastewater treatment, and subsequent application of selected systems to the existing wastewater treatment plant in the village Krumsin in the district Prostejov, including economic assessment. In the first part of the master thesis, I worked up the available options for the intensification of biological ponds. In the practical part of the thesis it was prepared a report of the current state of the wastewater treatment plant that serving as a basis for the design of intensification, which is also processed in the practical part. For the proposed variants of intensification was also processed economic assessment.
252

Možnosti inovace procesu úpravy vody / Water Treatment Plants Innovation Opportunities

Zelený, Zdeněk January 2014 (has links)
This master´s thesis deals with the possibilities of innovation process water treatment. Specifically, to explore the use of sodium water glass and nanoiron in removing heavy metals from raw water at the drinking water treatment. For the comparison was used traditionally used coagulant, particularly liquid aluminum sulfate. The introductory part deals with the possibility of modifying the surface water during the treatment process such water into potable water. This chapter is a description of the quality of raw water used, then the description of currently used separation processes. Furthermore, they are described and commonly used types of treatment plants. Conclusion The introductory section deals with traditional coagulants and form a suspension. Another part of this master´s thesis has been devoted to the possibilities of innovation in the treatment of raw waters as drinking water, describes the options and features of the use of water glass and nanoiron. The following section describes the experimental part of this thesis. It is followed by the experimental results. The last chapter summarizes the acquired knowledge and commented on the measured values of the experimental part. This work also shows several specific projects using innovative technologies presented.
253

Srovnání odtoku z klasické a zelené střechy / Comparison of runoffs from conventional and green roofs

Mácová, Michaela January 2015 (has links)
This thesis deals with the comparison of rainwater and its subsequent use. Especially, it compares the rainwater from the classical and green roofs. The thesis is divided into two parts. The first part deals with roofs in general, it focuses mostly on green roofs and green roofs in Norway. It also deals with precipitation and the use of rainwater. In the second part there is a brief introduction of organization called „Open Garden“. Susequently, this art is focused on the analysis of samples and their subsequent coparison in the framework of classic and green roofs. The second part is also focused on the comparison of water quality during the time.
254

Vytápění objektu zdroji na různé druhy paliv / Heating of the Object with Different Fuels

Ladomérská, Jana January 2015 (has links)
In my final thesis I am processing a proposal for heating and preparing hot water for a restaurant with accommodation. This is a three-storey brick house. It is situated on the territory of the Ústí region. The aim of my work is to propose and to assess the appropriate heat source for this object. In the object I chose heating radiators. The proposal is processed in two variants. In the first variant, I suggest a cascade of condensing boilers using as a source of heat. In the second variant, I suggest a cascade of electrical boilers. Hot water will be prepared in reservoir of warm water. The source of hot water will be the same as the source for heating.
255

Stanovení viskozity pro různé typy splaškových vod / Determination of the viscosity of various types of wastewater

Glombová, Pavla January 2015 (has links)
The aim of this diploma thesis is a description of viscosity as a physical characteristic of liquids, next a description of projecting different types of sewer systems (pressure sewer system, vacuum sewer system and gravity sewer system). There was a range of density and viscosity of wastewater experimentally determined. These values were compared with ordinary values used in practice. The practical part of this work consists of sampling wastewater from different types of sewer systems and various localities. Chemical-biological analysis was realized on those samples with defined density, then dynamic viscosity was measured by the rotary viscometer for various temperatures. Measured data are evaluated. Finally, a calculation related to the design of sewers was made.
256

Stanovení funkční závislosti koncentrace vzduchu ve vodě v závislosti na tlaku / Assesment of air concentration in water depending on pressure

Uttendorfský, Petr January 2009 (has links)
This thesis deals with dependence of heat transfer coefficient on rate of air concentration in the water. Main idea appears from gas dissolvability in water depending on pressure, Henry's law and Newton's law of cooling. There had been an experiment made to verify the hypothesis.
257

Návrh otopné soustavy s tepelným čerpadlem pro vytápění rodinného domu / Design of a space heating system with heat pump in family house

Valešová, Jaroslava January 2010 (has links)
This master`s thesis deals with low-temperature heating that employs a heat pump. The introduction gives reasons for utilization of the renewable heat sources for heating. The next part focuses on a practical application of renewables on the heating of a family house. It covers a detailed description of the building and the designed heating system which includes: the calculation of thermal losses, design of the low-temperature boiler, heat pump, safety devices, heating elements, sizing and control of the system. The last part is devoted to the assessment of the system performance.
258

Řešení systému chlazení odplynů pro odstranění obsažených rozpouštědel / Solving of off-gas cooling system for removing contained solvents

Blažek, Pavel January 2011 (has links)
Diploma thesis deals with searching of the most appropriate solution of air mass cooling to clear away contained solvents. The solution is based on real and operated pharmaceutical unit. The cooling system is solved as systém of three tubular heat exchangers. In the first heat exchanger the air mass is cooled down by water, in the second by ice-cold water and brine R32 is used for cooling in the third heat exchanger. Heat exchanger system is solved for cooling the air mass which results in condensation of contained solvent – acetone.
259

Tepelný a pevnostní výpočet výměníku / Heat and stress analysis exchanger

Jedlička, Rostislav January 2011 (has links)
The main goal of master’s thesis is a propsal of the heat exchanger. The heat exchanger is double way of water side with the integrated air-vapor mixture cooler. Another aims are heat computation, heat loss computation, solidity dimensioning and selection of a material for a major selection. The last task is about detection of a vapor pressure trought the tube bundle.
260

Nízkoteplotní vytápění / Low temperature heating system

Hrubý, Jakub January 2013 (has links)
The aim of this thesis is to design a low temperature heating system which will be operating in multifunctional wooden house. Ground souce heat pump being the pruducer of the energy in this systém, while the underfloor heating.being the consumer. After a short brief on theoretical level of used systems and devices, there comes a practical part of equations, designing and finding of a best solutions for all necessary parts of heating system. All imporant generated data are packed in a lucid charts. Thesis is trying to be somewhat brief but factical, and just a little bit stylish. At the end of the work there are some economical conclusions of used system like annual energy consumption cost, payback periods comparisons to other systems etc.

Page generated in 0.0261 seconds