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Optimalize Application of Cascade Convection of a Heat Pumps
Hrnčíř, Zdeněk ; Šenk, Josef (referee) ; Gregor, Jan (advisor)
The introductory part of this diploma work contains a basic thought for the application of the heat pumps cascade connection and further I describe its function and define the notion of an optimum middle temperature.Then the direct comparison of two heats pumps cascade connection with an one-stage heat pump is shown there in a concrete example. The main part of the work is aimed to the determination of the most suitable variant for the heating and for the preparation of a hot service water in a benchmark family house. The systems of heatings are provided in options of a low-temperature floor heating and hot-water radiators. Both types of the heat pumps supply the warm to every heating system. It results into four possibles alternatives of the building heating.Besides of the alternatives mentioned above, a new variant of optimalised cascade connection was arisen during this work elaboration . The first stage of this connection which supplies the warm to the floor heating is disconnected out of the heating season and the second stage provides only a hot service water warming. The results of this work showed us that just this variant of a cascade connection causes savings in energy in comparison with an one-stage heat pump. In the conclusion of this work there are discussed the reached results and indicated the possibilities of a practical exploitation.
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Production hall with administrative build-in structure
Šenk, Josef ; Štrba, Michal (referee) ; Barnat, Jan (advisor)
My bachelor’s thesis contains design and assessment of steel structure of production hall with build-in administrative part located in Hrušovany u Brna. The dimensions of the ground plan are 12 x 50 m and the height of the structure is 9 m. The supporting structure consists of transverse frames. Distance of each transverse frame is 5 m. The frame structure is made of steel IPE profiles and is designed as a three-hinged frame. All frames are connected by longitudinal bracings. The spatial rigidity of the structure is provided by sway bracings. The dimensions of the ground plan of the build-in administrative part are 11 x 14,75m. The structure of ceiling is designed as steel-concrete composite structure. The steel structure of production hall and build-in administrative part is made of S235 steel.
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Simplified model of a axial cooled arc
Kasal, Ondřej ; Šenk, Josef (referee) ; Lázničková, Ilona (advisor)
Using of computer technology brings advantages of quick and well-arrange data. Computer technology offers change of transferring information the same way as that often using. Capacity and execution of computer technology is depending on kind and size of elaborated information. It is necessary to use to computer technology in application working with big data range and in application which needs many steps to finish calculation it means when we are using iterative methods. It is computer technology which creates main part of simulation, computation and visualization methods which are using in technical application. Plasma is using in many way of industry from technical manufacturing of materials to application in power electronics. Attention is paid to plasma. To description to fourth state of substance and for description to processes in plasma are used mathematic and physic equations. To solve to equations is hard and we need many steps to cover it. It is necessary to use computer technology to work up different method performs to describe electric arc.
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Theoretical modes of electric arc
Vondrák, Michal ; Šenk, Josef (referee) ; Lázničková, Ilona (advisor)
This thesis deals with theoretical models of the electric arc. Plasma arc and plasma torch are explained. Basic approaches of electric arc modeling are described. The indirect method for the determination of the mean temperature and velocity at the exit of plazma jet plasmatron are discussed. Finally the simplified model with axially-cooled electric arc is described.
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Steel lookout tower
Šenk, Josef ; Pešek, Ondřej (referee) ; Horáček, Martin (advisor)
The aim of the master thesis is a design and an assessment of a steel construction of a lookout tower. The lookout tower is located on the top of a hill near to village called Senetářov. There were designed two different options. The first one has a plan in the shape of hexagon, which is rotated on each floor. A plan of the second option is in the shape of rotational hyperboloid. Both options were assessed and compared, and the first option was chosen to be developed in greater detail. The total height of the lookout tower is 31,2 metres and the maximum dimension of the plan is 6,9 metres. The whole construction of the lookout tower is designed from steel grade S235 J2.
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Production hall with administrative build-in structure
Šenk, Josef ; Štrba, Michal (referee) ; Barnat, Jan (advisor)
My bachelor’s thesis contains design and assessment of steel structure of production hall with build-in administrative part located in Hrušovany u Brna. The dimensions of the ground plan are 12 x 50 m and the height of the structure is 9 m. The supporting structure consists of transverse frames. Distance of each transverse frame is 5 m. The frame structure is made of steel IPE profiles and is designed as a three-hinged frame. All frames are connected by longitudinal bracings. The spatial rigidity of the structure is provided by sway bracings. The dimensions of the ground plan of the build-in administrative part are 11 x 14,75m. The structure of ceiling is designed as steel-concrete composite structure. The steel structure of production hall and build-in administrative part is made of S235 steel.
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Theoretical modes of electric arc
Vondrák, Michal ; Šenk, Josef (referee) ; Lázničková, Ilona (advisor)
This thesis deals with theoretical models of the electric arc. Plasma arc and plasma torch are explained. Basic approaches of electric arc modeling are described. The indirect method for the determination of the mean temperature and velocity at the exit of plazma jet plasmatron are discussed. Finally the simplified model with axially-cooled electric arc is described.
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