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Desenvolvimento de um elemento combustível instrumentado para o reator de pesquisa IEA-R1 / Development of an instrumented fuel assembly for the IEA-R1 research reactorUMBEHAUN, PEDRO E. 21 December 2016 (has links)
Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-12-21T17:48:50Z
No. of bitstreams: 0 / Made available in DSpace on 2016-12-21T17:48:50Z (GMT). No. of bitstreams: 0 / Após o aumento de potência do reator IEA-R1 de 2 MW para 5 MW observou-se um aumento da taxa de corrosão nas placas laterais de alguns elementos combustíveis e algumas dúvidas surgiram com relação ao valor de vazão utilizada nas análises termo-hidráulicas. A fim de esclarecer e medir a distribuição de vazão real pelos elementos combustíveis que compõe o núcleo do reator IEA-R1, um elemento combustível protótipo, sem material nuclear, chamado DMPV-01 (Dispositivo para Medida de Pressão e Vazão), em escala real, foi projetado e construído em alumínio. A vazão no canal entre dois elementos combustíveis é muito difícil de estimar ou ser medida. Esta vazão é muito importante no processo de resfriamento das placas laterais. Este trabalho apresenta a concepção e construção de um elemento combustível instrumentado para medir a temperatura real nestas placas laterais para melhor avaliar as condições de resfriamento do combustível. Quatorze termopares foram instalados neste elemento combustível instrumentado. Quatro termopares em cada canal lateral e quatro no canal central, além de um termopar no bocal de entrada e outro no bocal de saída do elemento. Existem três termopares para medida de temperatura do revestimento e um para a temperatura do fluido em cada canal. Três séries de experimentos, para três configurações distintas, foram realizadas com o elemento combustível instrumentado. Em dois experimentos uma caixa de alumínio foi instalada ao redor do núcleo para reduzir o escoamento transverso entre os elementos combustíveis e medir o impacto na temperatura das placas externas. Dada a tamanha quantidade de informações obtidas e sua utilidade no projeto, melhoria e capacitação na construção, montagem e fabricação de elementos combustíveis instrumentados, este projeto constitui um importante marco no estudo de núcleos de reatores de pesquisa. As soluções propostas podem ser amplamente utilizadas para outros reatores de pesquisa. / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
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"Estudo de alguns parâmetros salivares em indivíduos com síndrome de DOWN" / Study measurement the flow rate concenntration whole saliva of individuals with Down syndrome.Walter Luiz Siqueira Junior 20 January 2005 (has links)
O objetivo deste estudo foi mensurar o fluxo salivar, pH, capacidade tampão, concentrações de proteína total e ácido siálico, atividades das enzimas amilase e peroxidase e concentração dos íons sódio, potássio, cálcio, fósforo, zinco e magnésio em saliva total de indivíduos síndrome de Down com idade entre 1 e 25 anos. Nos indivíduos com idade entre 1 e 5 anos a saliva total foi coletada através de uma leve sucção, enquanto que nos outros indivíduos com idade entre 6 e 10, 11 e 15, 15 e 20, 21 e 25 a saliva total foi coletada com estimulação mecânica através da mastigação de parafilm, durante 10 minutos. O pH e a capacidade tampão foramdeterminadas usando um pHmetro digital. A capacidade tampão foi mensurada através de titulação com HCl a 0,01N. A concentração de eletrólitos foi determinada através de um espectrofotômetro de emissão atômica com fonte de excitação de argônio induzido. A proteína total foi mensurada através do reagente de Folin. A atividade da amilase foi mensurada através da produção de maltose e a atividade da peroxidase foi mensurada através da utilização de orto-dianisidina. Para a analise estatística os dados foram apresentados em media ± desvio padrão. Foi utilizado o teste t de Student para determinar as diferenças entre as medias dos indivíduos síndrome de Down e o grupo controle. Nenhuma diferença significante foi observada na concentração de ácido siálico, fósforo, zinco, magnésio e cálcio entre os indivíduos síndrome de Down e o grupo controle. A concentração de sódio, proteína total e a capacidade tampão demonstraram ser maior nos indivíduos com síndrome de Down em comparação ao grupo controle. Por outro lado, o fluxo salivar, a concentração de potássio, e a atividade das enzimas amilase e peroxidase foram menores no grupo síndrome de Down quando comparado ao grupo controle. Estes resultados sugerem que as pessoas com síndrome de Down apresentam alterações no metabolismo do ducto e/ou das células acinares das glândulas salivares. / The aim of this study was to measure the flow rate, pH, buffer capacity, sialic acid, total protein concentrations, amylase and peroxidase activities and sodium, potassium, calcium, phosphorus, zinc and magnesium concentration whole saliva of individuals with Down syndrome aged 1 - 25 years. In individuals aged 1-5 years the whole saliva was collected under slight suction, while in the others individuals aged 6-10, 11-15, 15-20, 21-25 the whole saliva was collected with stimulation by chewing a piece of parafilm, for 10 minutes. The pH and the buffer capacity were determined using a digital pHmeter. The buffer capacity was measured by titration with 0.01 N HCl. Electrolyte concentrations were determined by inductively coupled argon plasma with atomic emission spectrometry. Sialic acid was determined by thiobarbituric acid assay. Protein was determined by the folins phenol reagent. Amylase was assayed measuring the maltose produced by the breakdown of starch and peroxidase with ortho dianisidine. For statistical analysis the date are presented as mean ± SD. Students t test was used to determine differences between the mean of the Down syndrome and control groups. No statistically significant differences were observed in sialic acid, phosphorus, zinc, magnesium and calcium concentration between the individuals with Down syndrome and control group. The sodium and total protein concentration and buffer capacity showed higher in the Down syndrome than in the control group. On the other hand the flow rate and potassium concentration, amylase and peroxidase activities were lower in the Down syndrome than in the control group. These results suggest that the Down syndrome persons present alteration in the metabolism of the duct and/or acinar cells of salivary glands.
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Armatury v otopných soustavách / Fittings of heating systemsKlus, Lukáš January 2018 (has links)
The theme of this diploma thesis is fittings of heating systems and it is divided into three parts. The first part deals with this topic on theoretical level. In the second part, there is a calculations and drawings that deals with heating and water heating of the apartment building in Uherské Hradiště. This part is solved in two variants concerning hydraulic balancing and regulation of the heating system. The last part of the thesis is an experimental solution and processing of pressure loss results of selected valves. These results are compared with the values reported by the manufactures of the valve.
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Tlakové ztráty armatur otopných soustav / Pressure loss valves in heating systemsNáglová, Michaela January 2017 (has links)
The theoretical part of the thesis deals with the hydraulics of heating systems. The aim of the project is a design of the heating and hot water preparation system for an apartment building. The building has 6 above-ground floors and 2 underground floors. Two different options of heating systems were designed, comparison and results are presented in the thesis. In the first case the heat source during the winter season and for water heating, where chosen two gas condensing boilers, situated in separated room on the second underground floor. In the second case, each apartment has its own gas condensing boiler. The experimental part of the project deals with measurements of pressure losses in water armatures used in heating systems. The aim of this part is the determination of coefficients of added resistance for uncontrolled elements, which are normally presented as tabular value. In thesis are presented results for a ball valve, backflow preventer, filter, for slide valve and thermostatic valve. Measurements for thermostatic valve where done with different settings and results are compared with parameters listed in the datasheet.
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Tepelně technické vlastnosti rámu okenní výplně a připojovací spáry / Thermal properties of the window frame and the connection jointsHejný, Lukáš January 2015 (has links)
This thesis deals with the solution problem of fitting a window in the wall, especially for passive houses. It provides options to optimize the window connection joints, improve the thermal transmittance of the window frame, thereby reducing the total heat loss through the window. In the first part of the thesis is a research literature on the windows and heat technical and physical mechanisms. Are described equations and physical processes taking place in the windows and related building structures. This section describes the basic points in history, technical description of windows, etc. and present ways of assembly Installation the window and the influence of the thermal properties of the heat loss. The next part deals with the description of the work and the results obtained in the course of doctoral study. Describes the main objectives of the dissertation thesis, calculations and simulations of temperature fields and the results of the calculated values. Furthermore are described and analyzed measurement data and compared with the calculated values. At the end dissertation thesis are given opportunities to improve the current solution regarding the heat transfer coefficient of the frame, the optimal way of installation fillers windows in the perimeter wall and improve the thermal properties of the connecting joint.
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Study of Earth Abundant TCO and Absorber Materials for Photovoltaic ApplicationsPrabhakar, Tejas January 2013 (has links)
No description available.
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Study of Response Surface Models for the characterization of the performance in Refrigeration Equipments and Heat PumpsMarchante Avellaneda, Javier 24 February 2024 (has links)
[ES] En un contexto de creciente preocupación por el calentamiento global y de políticas energéticas internacionales, en el cual los sistemas de climatización de los edificios suponen una parte importante del consumo energético global, los sistemas de bombas de calor son considerados como opciones muy interesantes debido a su alta eficiencia y por ser fuentes de energía renovables. En este sentido, una caracterización precisa de estos equipos es de vital importancia con el objetivo de mejorar su diseño y, en aquellos casos dónde este tipo de unidades se integren como parte de sistemas más complejos, implementar estrategias de control eficientes. En este contexto, esta tesis doctoral se centra en el modelado de bombas de calor con el fin de obtener modelos que permitan conocer con precisión el desempeño global de estas unidades en todo el rango de trabajo. En la primera parte del trabajo, se han realizado numerosos ensayos experimentales utilizando un nuevo prototipo de bomba de calor dual, obtenidos dentro del marco de trabajo del proyecto europeo GEOTeCH. Debido a la tipología hibrida de esta unidad, los resultados experimentales obtenidos incluyen datos de desempeño para las principales tecnologías de bombas de calor: las bombas de calor aerotérmicas y geotérmicas. Haciendo uso de toda esta información experimental, esta primera parte del trabajo se centra en obtener modelos polinómicos para la predicción del consumo eléctrico y las capacidades de calefacción y refrigeración en función de las variables externas a la unidad. Dichas variables son fáciles de obtener y suelen medirse en instalaciones reales. Por tanto, estos modelos caracterizan a la bomba de calor como un único componente, simplificando su implementación en modelos globales de sistemas más complejos donde se instalan estas unidades. Además, seleccionado un enfoque empírico para el modelado, en esta parte también se analizan algunos aspectos relevantes, como los términos a incluir en el polinomio, o cómo conformar las matrices experimentales de ensayo necesarias, es decir, cuántos puntos experimentales realizar y dónde situarlos en el rango de operación. Por último, la segunda parte de la tesis doctoral está dedicada a modelar uno de los componentes principales en estas unidades, el compresor. En este caso, el desarrollo de una extensa base de datos que incluye numerosos ensayos calorimétricos de las dos principales tecnologías de compresores, pistón y scroll, ha permitido el análisis detallado de las superficies de respuesta del consumo eléctrico y el caudal másico de refrigerante en función de las temperaturas de evaporación y condensación. A partir de esta información y siguiendo un enfoque similar al utilizado previamente, en esta segunda parte se revisan los modelos incluidos en la norma actual de caracterización de compresores, el estándar AHRI 540 (2020), para comprobar si son adecuados o si, por el contrario, debemos utilizar otro tipo de expresiones polinómicas. También se analizan en profundidad cuestiones críticas como el número de puntos necesarios para caracterizar cada tecnología de compresor, dónde situarlos en el dominio experimental, cómo evitar un posible sobreajuste del modelo minimizando problemas de extrapolación o interpolación, o cómo extrapolar los resultados para predecir con otros refrigerantes u otras condiciones de aspiración. / [CA] En un context de creixent preocupació per l'escalfament global i de polítiques energètiques internacionals, en el qual els sistemes de climatització dels edificis suposen una part important del consum energètic global, els sistemes de bombes de calor són considerats com a opcions molt interessants a causa de la seva alta eficiència i perquè són fonts d'energia renovables. En aquest sentit, una caracterització precisa d'aquests equips és de vital importància amb l'objectiu de millorar el seu disseny i, en aquells casos on aquest tipus d'unitats s'integren com a part de sistemes més complexos, implementar estratègies de control eficients. En aquest context, aquesta tesi doctoral se centra en el modelat de bombes de calor per obtenir models que permitisquen conèixer amb precisió el funcionament d'aquestes unitats a tot el rang de treball. A la primera part del treball, s'han realitzat nombrosos assajos experimentals utilitzant un nou prototip de bomba de calor dual, obtinguts dins del marc de treball del projecte europeu GEOTeCH. A causa de la tipologia hibrida d'aquesta unitat, els resultats experimentals obtinguts inclouen dades de funcionament per a les principals tecnologies de bombes de calor: les bombes de calor aerotèrmiques i geotèrmiques. Fent ús de tota aquesta informació experimental, aquesta primera part del treball se centra a obtenir models polinòmics per a la predicció del consum elèctric i les capacitats de calefacció i refrigeració en funció de les variables externes a la unitat. Aquestes variables són fàcils d'obtenir i se solen mesurar en instal·lacions reals. Per tant, aquests models caracteritzen la bomba de calor com un únic component, simplificant-ne la implementació en models globals de sistemes més complexos on s'instal·len aquestes unitats. A més, seleccionat un enfocament empíric per al modelatge, en aquesta part també s'analitzen alguns aspectes rellevants, com els termes a incloure al polinomi, o cóm conformar les matrius experimentals d'assaig necessàries, és a dir, quants punts experimentals realitzar i on situar-los al rang d'operació. Per acabar, la segona part de la tesi doctoral està dedicada al modelat d'un dels components principals d'aquestes unitats, el compressor. En aquest cas, el desenvolupament d'una extensa base de dades que inclou nombrosos assajos calorimètrics de les dues principals tecnologies de compressors, pistó i scroll, ha permès l'anàlisi detallat de les superfícies de resposta del consum elèctric i el cabal màssic de refrigerant segons les temperatures d'evaporació i de condensació. A partir d'aquesta informació i seguint un enfocament similar a l'utilitzat prèviament, en aquesta segona part es revisen els models inclosos a la norma actual de caracterització de compressors, l'estàndard AHRI 540 (2020), per comprovar si són adequats o si, per contra, cal utilitzar un altre tipus d'expressions polinòmiques. També s'analitzen en profunditat qüestions crítiques com el nombre de punts necessaris per caracteritzar cada tecnologia de compressor, on situar-los al domini experimental, cóm evitar un possible sobreajust del model minimitzant problemes d'extrapolació o interpolació, o cóm extrapolar els resultats per predir amb altres refrigerants o altres condicions d'aspiració. / [EN] In a context of global warming concerns and global energy policies, in which heating and cooling systems in buildings account for a significant amount of the global energy consumption, heat pump systems are widely considered as a really interesting option for enabling high efficiency and also for being renewable energy sources. In this sense, an accurate characterization of these units is of vital importance to improve their design and implement efficient control strategies, when the unit is integrated in more complex systems. Against this background, this PhD thesis focuses on heat pump modelling in order to create map-based models able to accurately characterize the global performance of these units for the entire working range. In the first part of this work, many experimental tests have been obtained for a new Dual Source Heat Pump prototype tested in the framework of the European project GEOTeCH. Due to the dual typology, the experimental results include performance data for the two main heat pump technologies: Air Source Heat Pumps and Ground Source Heat Pumps. By using all this experimental information, this first part focuses on obtaining empirical polynomial models capable of accurately predicting energy consumption and heating and cooling capacities as a function of external variables. Such variables are easy to measure and are usually recorded in real installations. Therefore, these models characterize the heat pump as a single component, simplifying its implementation in global models of more complex systems where these units are installed. Furthermore, selecting the empirical model approach, this part also includes some critical aspects, such as how to obtain the best polynomial expression, or how to perform the required experimental test matrices, i.e., how many tests should be conducted and where in the operating range. Finally, the second part of this PhD thesis is dedicated to modelling one of the main components of these units, the compressor. In this case, the development of an extensive database including numerous calorimetric tests on the two main compressor technologies, reciprocating and scroll compressors, has allowed the detailed analysis of the response surfaces of their performance parameters, i.e., the energy consumption and mass flow rate as a function of the evaporation and condensation temperatures. Using this information, and following an approach similar to that used in the first part, this second part reviews the models included in the current compressor characterization standard, the AHRI 540 (2020), in order to check whether they are appropriate or, on the contrary, whether we should use of other types of polynomial expression. Critical issues such as the number of points needed to characterize each compressor technology, where to place them in the experimental domain, how to prevent possible overfitting in the model adjustment to minimize extrapolation or interpolation problems, or how to extrapolate results for predicting other refrigerant or suction conditions, are discussed in depth. / I would like to acknowledge the financial support that has made this PhD thesis possible. The doctoral fellowship FPU15/03476 was founded by “Ministerio de Educación, Cultura y deporte” inside the program “Formación de Profesorado Universitario”, and the GEOTeCH project (No 656889) founded by the European Union under the “Horizon 2020 Framework Programme for European Research and Technological Development” / Marchante Avellaneda, J. (2023). Study of Response Surface Models for the characterization of the performance in Refrigeration Equipments and Heat Pumps [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/192653
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Modelling of Heat Pumps Working with Variable-Speed CompressorsOssorio Santiago, Rubén Josep 06 August 2024 (has links)
Tesis por compendio / [ES] La tecnología de bombas de calor se ha vuelto estratégica en Europa, está extendiéndose rápidamente y se planea que reemplace las calderas de gas en un futuro cercano. Sin embargo, aún enfrenta desafíos, como encontrar refrige-rantes nuevos viables y altamente eficientes, y mejorar aún más el rendimiento del sistema. Para abordar este último problema, han surgido las bombas de calor de velocidad variable que prometen reducir el consumo anual e incremen-tar el confort adaptando la potencia suministrada a las necesidades cambiantes. Esta tecnología se está implementando ya, pero carece de una metodología estandarizada para diseñar y seleccionar sus componentes.
Esta tesis tiene como objetivo establecer pautas de diseño generales para la selección y diseño de componentes de bombas de calor de velocidad variable, y ofrecer información valiosa que se pueda traducir en herramientas para asistir en la simulación, diseño, selección y detección de fallas en estos dispositivos. El contenido del estudio se puede dividir en tres áreas temáticas:
En una primera parte, se estudian los compresores de velocidad variable. El compresor es el primer componente que se selecciona en una bomba de calor, modula la capacidad y es el principal consumidor de energía. Sin embargo, no existen metodologías bien establecidas para modelar su comportamiento. En esta parte, se realizan ensayos de caracterización de compresores de velocidad variable y sus inversores para comprender su comportamiento y proporcionar correlaciones compactas para modelar su rendimiento.
En la segunda parte, se propone una metodología para dimensionar los intercambiadores de calor en bombas de calor de velocidad variable. Nor-malmente, se diseñan para una potencia fija y temperaturas de trabajo constan-tes, sin embargo, en las bombas de velocidad variable, la capacidad y las tempe-raturas de trabajo fluctúan significativamente con el tiempo. En esta parte, se estudia la evolución del rendimiento de los intercambiadores de calor con la capacidad (velocidad del compresor) y se propone una metodología de selec-ción/dimensionamiento que considera la evolución de la capacidad requerida y de las condiciones climáticas externas a lo largo del año.
Por último, se evalúa la circulación del aceite en las bombas de calor de velocidad variable. Gestionar la lubricación en los compresores de velocidad variable es un problema típico ya que, para tener suficiente lubricación a bajas velocidades, el compresor termina bombeando un exceso de aceite a altas velo-cidades. En esta parte se estudia la evolución de las tasas de circulación de acei-te con la velocidad y se analiza teóricamente su efecto en el rendimiento de la bomba de calor. / [CA] La tecnologia de les bombes de calor s'ha tornat estratègica a Europa, s'està estenent ràpidament i es preveu que substituïsca les calderes de gas en un futur pròxim. Tanmateix, encara s'enfronta a desafiaments com trobar refrigerants nous viables i altament eficients, i millorar encara més el rendiment del sistema. Per abordar aquest darrer problema, han sorgit les bombes de calor de velocitat variable que prometen reduir el consum anual i incrementar el confort adaptant la potència subministrada a les necessitats variables. Aquesta tecnologia ja s'es-tà implementant, però manca d'una metodologia estandarditzada per dissenyar i seleccionar els seus components.
Aquesta tesi té com a objectiu establir pautes de disseny generals per a la se-lecció i disseny de components de bombes de calor de velocitat variable, i oferir informació valuosa que es pugui traduir en eines per ajudar en la simulació, disseny, selecció i detecció de fallades d'aquests dispositius. El contingut de l'estudi es pot dividir en tres àrees temàtiques:
En una primera part, s'estudien els compressors de velocitat variable. El compressor és el primer component seleccionat d'una bomba de calor, modula la capacitat i és el principal consumidor d'energia. Tanmateix, no hi ha metodo-logies ben establides per modelar el seu comportament. En aquesta part, es realitzen assajos de caracterització de compressors de velocitat variable i els seus inversors per comprendre el seu comportament i proporcionar correlaci-ons compactes per modelar el seu rendiment.
En la segona part, es proposa una metodologia per dimensionar els inter-canviadors de calor en bombes de calor de velocitat variable. Normalment, es dissenyen per a una potència fixa i temperatures de treball constants, no obs-tant això, en les bombes de velocitat variable, la capacitat i les temperatures de treball fluctuen significativament amb el temps. En aquesta part, s'estudia l'evo-lució del rendiment dels intercanviadors de calor amb la capacitat (velocitat del compressor) i es suggereix una metodologia de selecció/dimensionament que considera l'evolució de les càrregues i de les condicions climàtiques externes al llarg de l'any.
Finalment, s'avalua la circulació de l'oli a les bombes de calor de velocitat variable. Gestionar la lubricació als compressors de velocitat variable és un pro-blema típic, ja que per tenir suficient lubricació a baixes velocitats, el compres-sor acaba bombejant un excés d'oli a altes velocitats. En aquesta part s'estudia l'evolució de les taxes de circulació d'oli amb la velocitat i s'analitza teòricament el seu efecte en el rendiment de la bomba de calor. / [EN] Heat pump technology has become strategic in Europe, it is rapidly spread-ing, and it is planned to replace gas boilers in the near future. However, they still have challenges to solve, such as finding new viable and highly efficient refriger-ants and further increasing their system performance. For this latter issue, vari-able-speed heat pumps arise, which claim to decrease annual consumption and increase comfort by adapting the delivered capacity to the changing loads. This technology is being implemented but lacks a standardized methodology to de-sign and select its components.
This thesis aims to establish comprehensive design guidelines for selecting and designing variable-speed heat pump components and give insights that can translate into valuable information and tools for engineers to assist them in the pump simulation, design, selection and fault detection. The content of the study can be divided into three thematic areas:
In the first part, variable-speed compressors are studied. The compressor is the first selected heat pump component; it modulates the capacity and is the primary energy consumer. However, there are no well-established methodolo-gies to model their behavior. In this part, extensive testing of variable-speed compressors and their inverters was carried out to understand their behavior and to provide compact correlations to model their performance.
The second part proposes a methodology to size heat exchangers for variable-speed heat pumps. Typically, they are designed for a fixed capacity and constant working temperatures. However, the capacity and working tempera-tures fluctuate significantly overtime in variable-speed pumps. In this part, the performance evolution of heat exchangers with capacity is studied, and a meth-odological selection/sizing technique is proposed that considers the evolution of external climatic conditions and loads over the year.
Lastly, the oil circulation in variable-speed heat pumps is assessed. Man-aging lubrication in variable-speed compressors is a typical issue, as a design valid for sufficient lubrication at low compressor speeds will end up pumping excess oil at high speeds. In this final part, the evolution of oil circulation rates with speed is studied, and its effect on heat pump performance is theoretically analyzed. / I am indebted to the Spanish and European governments for their financial
support with the grant PRE2018-083535, which made this research possible.
Their commitment to academic excellence and research advancement has been
crucial in successfully completing this thesis. / Ossorio Santiago, RJ. (2024). Modelling of Heat Pumps Working with Variable-Speed Compressors [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/203104 / Compendio
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Studie snížení energetické náročnosti bytového domu / Study of energy consumption reduction of block of flatsSvoboda, Lukáš January 2014 (has links)
The goal of the thesis is firstly to get all the information about the initial state of solved block of flats, which is located on the street Merhautova 76/954 in Brno – Černá pole, in terms of constructions, energy consumption and initial state of heating system. In the second part of the thesis, where are discussed the possibilities of reduction of energy consumption, variant drafts of reduction of energy consumption and their financial costs and the choice of optimal variant. Third part deals with assement of solved block of flats in terms of sustainable built environment by using tool to rate buildings in terms of sustainable built environment - SBToolCZ, evaluation of possibility to use renewables. In the end are written summaries and recommendations.
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