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dc.contributorVan Wunnik, Lucas Philippe
dc.contributorDewallef, Pierre
dc.contributor.authorLópez I Álvarez, Edgar
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Organització d'Empreses
dc.date.accessioned2020-03-31T07:36:50Z
dc.date.issued2019-09-17
dc.identifier.urihttp://hdl.handle.net/2117/182331
dc.description.abstractThe main purpose of this master thesis is to optimize the operation of variable speed pumps in a system installed to supply water to a water deposit or convey it through a canal. To do so, a Matlab code that models the operation is used to do the simulations. This code was already programmed before the starting of this thesis, and every modification during this work is done over this original code. The model presents a system where a fixed speed pump, with an electric motor, pumps a certain volume of water from one tank to another. From its initial form, which works at nominal speed of the electric motor, the model will be modified in order to increase the global efficiency of the system. This improvement will mainly come from increasing the pumping efficiency by implementing a variable speed pump. To do so, an optimization of the global system is performed. The results observed with the optimized model greatly outperformed the original model in terms of efficiency, but the duration of the process increased dramatically. After these results, other systems are modelled in order to have alternative systems that can operate faster but maintaining high efficiency. The first solution proposed consists on substituting the original pump by a lager one. This system ended up with relative high efficiency but the system remained quite slow. The other alternative studied is the implementation of two pumps in parallel, with one working at optimal speed and the other providing the remaining flow necessary to pump the same volume of water as the original system in the same time. This was satisfactory, as the system obtained performed rapidly and with good levels of efficiency. All the results from the different models studied during this work are compared, and the strong points and weaknesses from each model are exposed. This is done so that the different models developed during this work can be simulated for a specific real application and know which one works better for the installation. The structure of this thesis is divided in 7 chapters. Chapter 1 presents the system of study and the efficiency problematic as the focus of the work. In Chapter 2 the main components of the system are presented: the electric motor and the pump. It is explained their functioning and the way that they operate together inside the system. Chapter 3 is focused on the initial Matlab model. This includes the modelling of the motor and the pump, the numerical resolution of the model, the explanation of the speed control and an analysis of the performance and results. This chapter is used to know the main factors that have influence on the efficiency of the system and how they can be modified. Chapter 4 presents the algorithm of optimization implemented on the model, with the functions that work with it and its numerical resolution. Chapter 5 is about the performance of the optimized model. Besides from the algorithm, the speed controller is modified and a lowpass filter is implemented on the system. The results of the optimized model are then compared to the original. Finally, in Chapter 6, other alternatives to the first optimized model are studied in order to find the best solution possible. The two variations are implementing a larger pump and a system with two pumps in parallel. Finally, the performance of all systems studied are compared. Chapter 7 works as the conclusion
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.subjectÀrees temàtiques de la UPC::Energies::Energia hidràulica
dc.subject.lcshWater-power
dc.subject.lcshWater-supply
dc.subject.lcshHydraulic turbines
dc.titleOptimization of pumping efficiency for hydraulic installations
dc.typeMaster thesis
dc.subject.lemacEnergia hidràulica
dc.subject.lemacAigua -- Abastament
dc.subject.lemacTurbines hidràuliques
dc.identifier.slugETSEIB-240.143422
dc.rights.accessRestricted access - author's decision
dc.date.lift10000-01-01
dc.date.updated2019-09-17T05:26:11Z
dc.audience.educationlevelMàster
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona
dc.audience.degreeMÀSTER UNIVERSITARI EN ENGINYERIA INDUSTRIAL (Pla 2014)
dc.contributor.covenanteeUniversité de Liège
dc.description.mobilityOutgoing


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