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  • 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.
1

Deginių emisijų kogeneratoriuose tyrimas / Analysis of Exhaust Emissions in Cogenerators

Petrauskas, Ramūnas 02 June 2011 (has links)
Nacionaliniai teršalų limitai nustatomi keturiems teršalams – sieros dioksidui (SO2), azoto oksidams (NOx), lakiesiems organiniams junginiams (LOJ) ir amoniakui (NH3). Šių junginių emisijų iš kogeneracinių jėgainių sklaida aplinkos ore, atliekant planuojamos ūkinės veiklos poveikio aplinkos orui įvertinimą, yra apskaičiuojama remiantis tik kogeneracinių jėgainių gamintojų pateikiamais duomenimis. Šio darbo tikslas – ištirti biodujas deginančio kogeneratoriaus deginių emisijas. Siekiant įvertinti iš kogeneratorių išmetamų biodujų degimo produktų emisijas į aplinką, atlikti eksperimentiniai ir teoriniai tyrimai. Teoriniame tyrime skaičiuojami kogeneratoriuose deginant biodujas į atmosferą išmetamų azoto oksidų (NOx), anglies monoksido (CO), sieros dioksido (SO2) ir lakiųjų organinių junginių (LOJ) kiekiai. Eksperimentinių tyrimų metu buvo atlikti deginių NO, NOx, SO2, CO emisijų ir biodujų sudėties (CH4, H2S) matavimai. Šiame darbe yra pateikiami eksperimentinių ir teorinių tyrimų metu gautų rezultatų panašumai ir skirtumai. / The national emission ceilings set for four pollutants – sulfur dioxide (SO2), nitrogen oxides (NOx), volatile organic compounds (VOC) and ammonia (NH3). Spread in the air of these compounds from cogeneration plants, when planning economic activities on the environmental assessment, it is based solely on data presented by cogeneration units producers. The aim of this work – to investigate exhaust emissions, after biogas combustion in cogeneration unit. In order to evaluate the emissions from biogas cogenerator combustion into the environment, experimental and theoretical studies are made. Theoretical study calculates emissions from biogas burning cogenerator, in the atmospheric of nitrogen oxides (NOx), carbon monoxide (CO), sulfur dioxide (SO2) and volatile organic compounds (VOC) emissions. Experimental studies were carried out measurements of exhaust emissions NOx, SO2, CO and biogas composition of CH4, H2S. In this work are the similarities and differences between experimental and theoretical researches results.
2

Návrh kotle na dřevní štěpku zapojeného v plynové kotelně / Biomass boiler in gas heating plant

Červeňak, Dušan January 2012 (has links)
This thesis describes the design of boilers for wood chips in a gas boiler house. Consisting of boiler house design from concept design suitable heat source to design components necessary for the proper functionality of the boiler house. Part of thesis is compilation of a functional diagram and design of possible solutions.
3

Ekonomické zhodnocení vyvedení výkonu z kogeneračních jednotek do různých napěťových hladin / Economical appraising of run the power from cogeneration units to different voltage level

Doležal, Václav January 2008 (has links)
The topic of the thesis is economical appraising of run the power from cogeneration units to different voltage level. There is sloves in the text, how and under what conditions we can find an optimal solution for the deployment of cogeneration units to the electricity network. The main criterion is the loss of networks and their economic evaluation. We are a description of the different types of cogeneration units, the economic balance and a treatise on losses in electrical networks.
4

Způsob a ekonomika využití odpadního tepla u vybraných bioplynových stanic / Method and economy of waste heat utilization at selected biogas plants

ZAJÍC, Pavel January 2014 (has links)
The thesis is focused on economy and different ways how to use the waste heat which is created during combustion of biogas in cogeneration units. The utilization of residual heat enables to significantly increase the energetic efficiency of existing and newly built biogas stations. There is the description of the biogas station in Třeboň, Pleše and Kardašova Řečice and the technical and economic analysis of utilization of biogas in the place of heat consumption. These biogas stations have different methods how to use the waste heat. In Třeboň, there is this method: made biogas is transported by gas pipeline to the place where it is used. By contrast, the heat is used in the place where is created, but the heat is used for different purposes in Pleše and in Kardašova Řečice.
5

Energetické využití recyklovaných rostlinných olejů / Utilizing of recycled green oils for power generation

Mikula, Hynek January 2010 (has links)
his thesis deal with the processing of used vegetable oil. Its recycling and power generation in the cogeneration unit. Economic and energy balance process. Proposal for a heat exchanger for heating vegetable oil. Physical properties of rapeseed oil.
6

Trigenerace a její využití v praxi / Trigeneration and its use in practice

Čupera, Pavel January 2009 (has links)
e master's thesis clarifies the concept of trigeneration and the principle of absorbing cooling. Compare the advantages and disadvantages of this method of manufacture cool with compressor cooling. It presents an overview of the implementation of a developing cold absorption and performance. Acquainted with the types of absorption chillers of the two leading suppliers, their characteristics and existing applications of these refrigeration units in operation in the Czech Republic and abroad. It also assesses the possibility of using these units in conjunction with a cogeneration unit powered by internal combustion engine. It follows from the economic assessment of costs and income of the absorption chillers and compressor chillers and on concrete examples and an assessment of the effectiveness of the various options.

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