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Termodynamické tepelné čerpadlo / Thermodynamic Heat pumpKnebl, Viktor January 2020 (has links)
This diploma thesis deals with the design of thermodynamic heat pump, used to utilize thermal energy of flue gases arised from the combustion of natural gas in a heat exchanger. The flow rates of the compader compressor, bypass compressor and turbine are calculated. Part of this thesis is simplified design of gearbox and economical evaluation of heat pump installation. The appendix of the thesis contains technical documentation.
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Termodynamické tepelné čerpadlo / Thermodynamic heat pumpKadlec, Stanislav January 2017 (has links)
The aim of the Diploma Thesis is to discuss the design and construction solution for circulation of the thermodynamic heat pump especially used in the heating industry with stoichiometric combustion of chosen natural gas. The basic components of the proposed heat pump are turbine, compressor and gearbox. To solve the presented aims, the thermodynamic calculation of the individual components, the determination of the efficiency of the whole equipment and the analysis of the physical properties of the natural gas with regard to the specified input and output parameters were considered. In addition, an analysis of the individual components design of the proposed equipment was carried out, on the basis the technically most acceptable variant was chosen and the equipment construction was carried out incl. connecting elements. Drawing documentation is part of the attachments. On the basis of the analysis, it can be stated that the proposed plant leads to energy savings, is ecologically sufficient and has been shown to have approximately twice the amount of heat dissipated than without its use.
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[en] EVALUATION OF A SUBSEA MULTIPHASE PUMPING SYSTEM APPLIED ON PETROLEUM PRODUCTION / [pt] ANÁLISE DA APLICAÇÃO DE UM SISTEMA DE BOMBEAMENTO MULTIFÁSICO SUBMARINO NA PRODUÇÃO DE PETRÓLEOMARCIUS FERRARI DUARTE DE OLIVEIRA 14 November 2003 (has links)
[pt] Um sistema de produção e escoamento de petróleo, quando
equipado com manifold submarino, viabiliza a produção
conjunta de poços de diferentes capacidades de produção. O
equilíbrio conseguido na produção desses poços se faz à
custa do estrangulamento (choking) dos poços de mais alta
capacidade de produção, de forma a propiciar um equilíbrio
com aqueles de mais baixa capacidade de produção.
Naturalmente as vazões atingidas nessa forma sinérgica
são menores do que aquelas que seriam atingidas com a
produção em separado desses poços mas, tais menores vazões
são economicamente mais atraentes devido às economias
atingidas nos custos de investimento (e.g., redução do
comprimento total de linhas de produção e do número de
risers) e das esperadas e normalmente ocorrentes reduções
de custo operacional nesses sistemas. Entretanto, a partir
da disponibilidade da tecnologia de bombeamento multifásico
submarino, na qual se torna possível diretamente transferir
energia à misturas multifásicas (óleo, gás e água) em
produção, viabiliza-se o estabelecimento de um novo e mais
atraente tipo de equilíbrio nesses sistemas. Tal novo
equilíbrio, possível pelo uso de sistemas de bombeamento
multifásico instalados em manifold submarinos de
produção, deve propiciar níveis de produção governados
inclusive pelos limites impostos pela engenharia de
reservatórios e não mais tão somente pelas características
físicas dos sistemas (seções de escoamento, distâncias,
lâminas d`água, propriedades dos fluidos etc.). A esta
forma inédita de obtenção de um novo e mais alto patamar de
equilíbrio da produção, a literatura vem utilizando a
denominação Estrangulamento Positivo (Positive Choking).
Assim, baseados no aumento das vazões de produção -
antecipação de produção - e no potencial aumento dos
fatores de recuperação - maiores volumes produzidos -
acredita-se ser tal técnica economicamente atraente quando
aplicada em sistemas de produção ainda em implementação, ou
mesmo, na implantação da mesma em sistemas já instalados. O
propósito desta tese é o de contribuir na análise técnica e
econômica da inédita aplicação de um sistema de bombeamento
multifásico submarino num sistema de produção equipado com
manifold. / [en] A subsea oil production system allows simultaneous
production of several wells with different flow rates when
the system has a subsea manifold. In order to balance the
different flow rates, the higher production wells have
their flow rates reduced via a choking system. As a result,
the total flow is lower than the summmation of all
individual well flow rates. But, this combined and lower
production has a very attractive economics, as it requires
lower capital expenditures, mainly due to the shorter
overall length of flowlines and lower number of risers and,
also due to the expected lower operational costs. Nowadays,
however, with the availabity of the technology of subsea
multiphase pumping system, which enables the transfer of
energy to multiphase mixtures (oil, gas and water) under
production, becomes possible to achieve an even higher and
more attractive plateau in these petroleum production
systems. This new equilibrium plateau, made possible by the
technology of subsea multiphase pumping, will lead
to production levels that will attempt to take benefit of
all reservoir allowance and then extending the primary
production limit imposed by the production system
characteris tics (e.g., flowline length, water depth,
produced fluid properties etc.). This novel scheme that
allows obtaining a now and higher production level is
being called in the literature as Positive Choking.
Therefore, based on the resultant aspects of production
flow rate increase - production anticipation - and
on the potentially higher recovery factors - larger
produced volumes - is what drives the belief that such
technology can be economically attractive to new
production systems being installed or even in those already
in operation. The purpose of this work is to contribute in
the technical and economical evaluation of Multiphase
Pumping System application on a subsea production system
equipped with a manifold.
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