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Reftoolbox - Refrigeration Toolbox For Matlab/Simulink
Glos, Jan
RefToolbox is an useful utility for MATLAB/Simulink, which adds support of thermodynamic data export and ph diagram plotting. It is based on CoolProp and supports large number of refrigerants and other mediums. Using graphical user interface it is possible to gain thermodynamic dependencies of state variables and export them into lookup tables. Also ph diagrams can be assembled using this tool and then used during simulations and measurements of heat pump and other refrigeration applications.
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Economy building refrigeration systems
Kohút, Radovan ; Formánek,, Marian (referee) ; Rubinová, Olga (advisor)
The thesis deals with the refrigeration systems. It analyzes ways to optimize the refrigeration process and the associated energy savings. In a practical application on an industrial building where there is the need of cooling the machinery, it compares the reference system with another two optimized alternatives. The heat recovery alternative supports heating and hot water supply and the water-side free cooling alternative lowers the energy consumption during the cold period of the year. The experimental section assesses the suitability of floor cooling in relation to the stratification of air temperature along the height of the room and the effect on thermal comfort of people.
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Compressors for refrigeration equipment
Perejda, Michal ; Sekanina, Bohumil (referee) ; Štětina, Josef (advisor)
The work is devoted to the problematic of compressors for refrigeration equipment with a focus on industrial refrigeration and medium performance output requirements. Reader receives a basic overview of the construction, operating cycle, pressure and temperature process and the compressor performance control options of the three in engineering practice most common types of compressors: reciprocating, screw and scroll. It describes the basic elements and actions of the cooling circuit within the information range most important for understanding the compressor operating cycle. This work includes thermodynamic analysis of the reciprocating compressor working cycle and shows practical application of compression device in real operation. The goal of this work is to provide the reader with a description of the thermodynamic process in the compressor, a comprehensive and systematic overview of the types of compressors used in practice and compare their characteristics, advantages and disadvantages.
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Air conditioning for business and sports center
Klügl, Martin ; Rubina, Aleš (referee) ; Rubinová, Olga (advisor)
This Bachelor’s thesis processes after analysis of the building design of an air-conditioning devices for three selected areas. For this devices are calculated a heat balances and an airflow. On this parameters are further suggested a distribution elements, performs a dimensions of the pipe and is designed an air-conditioning unit. The devices are above that supplemented by a fancoils. It is also solved an attenuation of a noise. In a project part is write up a project for realization of the air-conditioning devices.
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Processing of fish in ČR
HOUSKA, Pavel
The aim of my bachelor thesis was to evaluate technological processes in freshwater fish processing and analyse it. The work is focused on processing of common carp, which is one of the most important fish species produced in the Czech Republic. Bachelor thesis is conceptually divided into 4 parts. In the first part the author follows the production and consumption of fish in the Czech Republic in comparison with the world. The present consumption in the Czech Republic is around 4.9 kg of fish per head per year, of which 3.4 kg is accounted for by marine fish. The second part is focused on the anatomical and physiological structure of carp body, which impacts processing. The third part describes the steps of fish processing technology, evaluation of the effectiveness of each approach and product handling after processing. The last part focuses on a final product and its supply in the market.
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Energetické a environmentální hodnocení provozu chladicích zařízení a tepelných čerpadel
E - CONSULT, Praha ; Petrák, Jiří
Cílem projektu je vytvořit lepší podmínky pro dosažení úspor energie, podpořit zvýšení účinnosti energetických procesů a zvýšit podíl využití druhotných energetických zdrojů včetně odpadního tepla. Závěrečná zpráva poskytuje přehled o řešení projektu za rok 2007. Bylo posouzováno chladicí zařízení pro klimatizaci bez a s akumulací chladu, byly publikovány výsledky na konferenci na Slovensku a předán rukopis článku do recenzovaného časopisu. Proběhlo environmentální hodnocení elektrické energie a přípravné práce pro modelování tepelných oběhů.
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