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81	Eliminación del Biofouling en intercambiadores de calor-condensadores que minimicen el impacto ambiental en el medio marino Río Calonge, Belén 28 September 1999 (has links) La presente tesis doctoral tiene por objeto tratar de eliminar el fenómeno no deseable de formación de biofouling en diferentes superficies tubulares de intercambiadores de calor, mediante tratamientos físicos y químicos, intentando minimizar el impacto ambiental creado en los efluentes de las instalaciones industriales.El equipo experimental está compuesto por una planta piloto de intercambiadores de calor condensadores dotada de ocho tubos que funcionan como sistemas independientes, donde se controlan los parámetros de presión, temperatura y caudal, que define indirectamente el biofouling depositado en el interior de dichos tubos a través de los valores de resistencia friccional al flujo y resistencia a la transferencia de calor.También ha sido diseñado y construido otra planta piloto o monitor "MCMDID" (monitor combinado de medición directa e indirecta del biofouling) donde se mide en continuo el espesor del biofouling adherido a la superficie de un tubo del mismo material que los ensayados en la planta descrita anteriormente. chemical treatment sea water refrigeration physical treatment hypochlorite peracetic acid boicide condenser heat exchanger biofouling refrigeración con agua de mar tratamiento químico tratamiento físico hipoclorito ácido peracético biocida condensadores intercambiadores de calor biopelícula Construcción Naval 502 536 628 66
82	Modeling of Heat Transfer Wahlberg, Tobias January 2011 (has links) Modeling of heat transfer using Dymola. In this report a evaporator, economizer and superheater where modeled. The report describes how the models where modeled and what input was most suitable for a accurate model. Boiler steam superheater condenser overall heat transfer coefficient heat exchanger Dymola Modelica heat transfer fouling economizer process simulator evaporator värmeöverföring kondensor överhettare ekonomiser värmeväxlare ånga ångteknik kondensering energiteknik förångare simulator Thermal energy engineering Termisk energiteknik
83	Estudio experimental de optimización de una bomba de calor agua-agua empleando propano como fluido de trabajo Martínez Galván, Israel Octavio 13 October 2008 (has links) La tesis que a continuación se presenta surge como una respuesta práctica al problema medioambiental relacionado con el empleo de sustancias sintéticas como fluidos de trabajo en muchos de los equipos de climatización comercializados en la actualidad. Con su desarrollo se busca dar alternativas a la creciente demanda de sistemas de climatización eficientes que contribuyan a la optimización de los recursos energéticos. Uno de los objetivos planteados en el desarrollo de la tesis ha sido el diseñar y evaluar experimentalmente el comportamiento de diferentes prototipos experimentales de bombas de calor, particularmente de tipo agua-agua con el uso del propano como refrigerante. La caracterización de los prototipos se llevó a cabo realizando diferentes estudios de carga con la finalidad de determinar la mínima cantidad de propano en cada sistema para obtener las máximas prestaciones en cuanto a COP y capacidad. Los estudios han mostrado que los elementos principales, como el compresor o los intercambiadores de calor presentan mayores rendimientos con el uso del propano en comparación a algunos refrigerantes sintéticos como el R407C. Esto se debe en gran medida a las excelentes propiedades termodinámicas y de transporte del propano, así como a la evolución que este refrigerante tiene a través de los componentes del sistema. En cuanto a la carga óptima de propano, se han obtenido cargas de refrigerante próximas a los 500 gramos, que han permitido obtener coeficientes de operación elevados bajo condiciones de trabajo típicas de calefacción y refrigeración, así como capacidades específicas de refrigeración entre 25 y 33 Wattios por gramo de propano. / Martínez Galván, IO. (2008). Estudio experimental de optimización de una bomba de calor agua-agua empleando propano como fluido de trabajo [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/3344 / Palancia Heat pump Water-to-water Optimization Refrigerant charge Propane Design Evaporator Condenser Oil Polyolester MAQUINAS Y MOTORES TERMICOS 331001 - Equipo industrial 331326 - Equipo de refrigeración 331005 - Ingeniería de procesos 331310 - Material de calefacción
84	Komplexní pevnostní návrh kondenzátoru / Complex strength design of condenser Denk, Jakub January 2017 (has links) This diploma thesis focuses on strength design of steam condenser. The goal of the thesis is to make strength calculations for the specific operation conditions, introduce possible solutions, provide recommendations and refer to weak points of such calculation procedures. First, thermal-hydraulic design in HTRI software is performed. Strength calculations respect ČSN EN 13445 standard. Strength calculation with imported temperature field is performed in ANSYS Workbench software. In the next step, another strength calculation is realized in Sant´ Ambrogio software. Results are evaluated in conclusion chapter, including recommendations for the possible following work.
85	Vzduchem chlazený kondenzátor / Air cooled condenser Bochníček, Ondřej January 2017 (has links) This master´s thesis deals with an air cooled condenser. The specific attention is focused on the condenser in the Brno´s waste-to-energy plant SAKO. The general process of calculation of the heat transfer coefficient is introduced, which is the base for the calculation of the condenser´s output. This process is later used for the calculation of a specific condenser. A considerable part of the thesis is concentrated on the analysis of behavior of the condenser of SAKO in various conditions from the theoretical point of view and then also in terms of real operation using provided operational data.
86	Parní turbína - návrh potrubní trasy kondenzátu / Steam turbine - pipeline design Kotas, Jakub January 2020 (has links) The master thesis deals with the design, tracing and dimensioning of condensate pipeline. In the beginning, a preliminary calculation of heat balance is done. It is followed by a description of the main condensate system supplemented by the computational design of pipeline and the calculation of pressure losses in this pipeline. The crucial part of the thesis is the calculation of pressure losses, which is done in two ways. The first approach to calculation of pressure losses in the pipeline is calculated using values of representative resistance coefficient for pipe ele-ments using Idelchik literature and for individual types of valves using values from datasheets of Siemens Energy suppliers. In the second approach to calculation representative resistance coefficients for pipe elements and individual types of valves CRANE literature are used. Then both approaches of choosing representative resistance coefficients are compared and evaluated. Based on the calculated values, a suitable pump is selected at the end of the master thesis.
87	Zpracování dokumentace pro testovací stanici výrobní linky řídicích jednotek tepelných čerpadel / Processing of documentation for testing station of heat pumps switchbox assembly line Šindler, Matěj January 2021 (has links) In opening, this diploma thesis is introducing the company Daikin Device Czech s.r.o. In the next step the principle of function of a heat pump. Then there are described its main parts. First part of this thesis is dedicated to assembly line of the heat pump’s switchboxes. The layout of the assembly line is described and added with description of used health and quality measures. Main part is speaking about running test of the switchbox line. The main function of the test is described alongside with description of the process of making the testing software.
88	Programovatelná osvětlovací soustava pro optický mikroskop / Programmable illuminating system for an optical microscope Lošťák, Martin January 2008 (has links) A programmable illuminating system (PIS) uses a commercial multimedia projector together with a suitable optical relay system in order to illuminate specimens under microscope with transmitted light. The theoretical part of the diploma thesis describes some methods used in the optical transmission microscopy. All of these methods employ physical masks placed in the condenser front focal plane. In the case of the traditional methods the masks are used to enhance contrast (e.g. dark-field illumination) and resolution (oblique illumination). One of the methods (a condenser with rotating aperture) provides the information about the three-dimensionality of the specimen. The next part of the thesis contains the theory and the basic classification of the illuminating systems used in the optical transmission microscopy. An optical and mechanical design of the optical relay system used for PIS is introduced. The experimental part shows the results made with two different PIS arrangements. It was shown on two different specimens that the PIS provides the same illumination as the classical methods. It was also proved that the PIS can simulate the rotating aperture in the condenser front focal plane and thus to give the information about the three-dimensionality of the specimen. Some new static and dynamic illuminating methods were introduced.
89	Energetický zdroj se spalovací turbinou / Power plant with gas turbine Drábek, Ivo January 2012 (has links) The goal of this master´s thesis is designing power plant with gas turbine of 50 MWe power output for the site. It includes appropriete choose of gas turbine and its simplified termodynamic calculation, designing the thermal diagram and its calculation, for the parameters complying with nominal temperature of outside air, layout design, annual energy and mass flow results, savings of combined heat and power, intended at this application and economic evaluation of investment.
90	Konstrukční návrh zařízení pro studijní účely krize varu / Design concept of the facility for the educational objectives of the boiling crisis Vojáčková, Jitka January 2012 (has links) This thesis deals with a design concept of the facility for the educational objectives of the boiling crisis. In the first part, the issue of boiling crisis is explained. There are also examples of some experimental facilities in the world. The second part includes design concept of a loop, which is accompanied by designs of individual devices, such as separator, condenser, exchanger, pump, water tank, electric heater. The thesis also states designs of throttle control, temperature control and flow control.

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