Browsing by Subject "pellets"

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Analiza celowości stosowania zasobników energii w systemach grzewczych wykorzystujących biomasę
(Data obrony: 2012-10-23) Raś, Anita
Wydział Geologii, Geofizyki i Ochrony Środowiska
This thesis raises the question of the use of thermal energy storage in heating systems by the installation of an energy storage tank. Storage tanks are designed for heat storage which are surplus from the central heating system. This thesis analyzes the heating system working with and without storage tank and an economic analysis showing the advisability of using an energy storage tank in heating systems on the basis of the results of case study. The experiment was carried out for the installation of the boiler with automatic feeding of fuel and hot water cylinder. In the thesis was put the argument that there is not reasonable of using energy storage tank in systems with a boiler with automatic feeding of fuel.
Access status: Open Access ,
Innovative solution of coal slurry mixer
(Wydawnictwa AGH, 2017) Feliks, Jacek
During the coal-enrichment process in mechanical processing plants, fine-grained highmoisture coal slurries are produced. These waste products may be used in energetic blends after a special moisture-reducing treatment. Therefore, coal slurry pelletizers are produced (among other things). In the Department of Mining, Dressing, and Transport Machines, a project of a prototypical installation for coal slurry pelletization with a capacity of 50 Mg/h was constructed. The main part of the installation is the mixer. At its bottom part, an opening is placed that is closed by a metal plate. During the pelletization work, a plate is halfopening and rotates around its own axis. The rotation of the drum and agitators installed inside the mixer causes sludge grinding and its homogenization. A properly working drum closure system is important for the proper exploitation of the mixer. The designed mechanism allows us to lower the plate linearly in the first phase and then turn it with a predetermined angle after the complete removal of material from the drum. The project required an examination of the kinematics of the system and determination of the drive system load, which allowed us to designate the working parameters. This paper presents the course of the taken actions and results of the fundamental research, along with their analysis. A selection of optimum design and exploitation parameters was performed on the basis of the graphical synthesis method, created simulation model, and tests of the prototype device.
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Wstępny projekt osiedlowej kotłowni na biomasę
(Data obrony: 2013-10-09) Wajda, Mateusz
Wydział Geologii, Geofizyki i Ochrony Środowiska
The use of biomass to produce heat for central heating and domestic hot water, can be a great way to improve environmental quality, while minimizing the investment and operational costs. Properly designed installation in conjunction with a maintenance-free fuel delivery system enables full automation of the combustion process. The initial project was performed for a small, modern housing estate including North Praga district of Warsaw. On the basis of calculations made in the Comap OZC 5.0 states that the building heat load is much lower than traditional housing blocks of this type. Preparation is heat, in the form of district heating boiler is characterized by simplicity and reliability. The main element of central heating and domestic hot water will be a modern, high agility pellet boilers. The whole system will work with plate heat exchangers, which will be used for both open system and closed system. Circuits will be regulated through the use of properly selected hydraulic fittings, where each component will perform certain functions. Fuel storage will be located in the immediate vicinity of the boiler, and the key element will be three augers.