Global ETD Search

1	Heat Transfer Analysis of A Line-Heater Hsiao, Shih-Yen 25 July 2002 (has links) The results provided by this study include (a) temperature fileds in the interior and surface of the heater (b) determination of the heat transfer coefficient on the surface of the heater (c) the effects of different dimensionless working parameters electric-heater Line-Heater
2	Stanice pro měření výkonu topení palivových filtrů / Test bench for heating power measurement of fuel filters Jahoda, Patrik January 2017 (has links) This work is focused on the design and realization of a station for measuring the performance of modern fuel filter heaters. The openning part of the thesis is focused on the theoretical introduction to the issue of diesel purity and the function of fuel filters. The second part includes the process of measuring station creation, including the creation of a control application in LabView. The final part is devoted to measuring of several types of filters and method verification.
3	Tepelná čerpadla vzduch-voda / Air - water heat pumps Illichman, Petr January 2022 (has links) The topic of my diploma thesis is air-water heat pumps. The diploma thesis contains three parts. In the first part I describe the theory of air-water heat pumps. In the second part I consider two variants of heating, hot water heating and pool water heating using air-water heat pumps in the family house, Révova. The third experimental part is focused on observation of operational process and calculation of heat factors of air-water heat pump while in the heating model. The calculated heating factors are then compared to the heating factors from the manufacturer's graph.
4	Modeling The Temperature of a Calorimeter at Clab : Considering a Thermodynamic Model of The Temperature Evolution of The Calorimeter System 251 Ekman, Johannes January 2021 (has links) It is important to know the heat generated due to nuclear decay in the final repository for spent nuclear fuel. In Sweden, the heating powers generated in spent nuclear fuels are currently measured in the calorimeter System 251 at the Clab facility, Oskarshamn. In order to better measure, and increase understanding, of the temperature measurements in the calorimeter, a simple thermodynamic model of its temperature evolution was developed. The model was described as a system of ordinary differential equations, which were solved, and the solution was applied to calibration measurements of the calorimeter. How precise the model is, how its parameters affect the model, et cetera, are addressed. How the temperature evolution of the system changes as the values of parameters in the model are changed is addressed. The mass correction of the calorimeter could be estimated from this model, which validated the established mass correction of the calorimeter. How the measurement results from the calorimeter would be affected if the volume of the calorimeter was changed was also considered. Additionally, gamma radiation escape from the calorimeter without being detected as heat in the calorimeter. The gamma escape energy fraction was estimated by SERPENT simulations of the calorimeter, as a function of the initial photon energy. The gamma escape was also estimated for different values of the radius of System 251. calorimetry calorimeter System 251 temperature evolution spent nuclear fuel SNF MATLAB SERPENT2 Clab nuclear decay heat calibration measurements thermodynamic model gamma escape fraction mass correction calibration measurements electric heater three component system eigenvalues eigenvalue estimation temperature increase method sensitivity of mass correction calorimeter heat capacity mass correction uncertainty calorimeter calibration curve monoenergetic gamma spectrum Subatomic Physics Subatomär fysik Other Physics Topics Annan fysik

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