Browsing NTNU Open by Author "Dorao, Carlos Alberto"
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Analysis of unconventional natural gas resources and possible monetization alternatives
Øverland, Mads Vegard (Master thesis, 2012)Purpose of this paper has been to analyse unconventional natural gas (UNG) resources and identify possible alternatives for monetizing them.What's found is that global UNG reserves are vast and many. However only a few ... -
Assessment of the potential of small scale LPG technologies
Vestbøstad, Ivar (Master thesis, 2014)Many countries experience an economic growth, naturally leading to an increasing demand of energy. LPG is a relatively unknown energy carrier in Europe, whereas in other parts of the world LPG is used for daily cooking in ... -
Breakage and coalescence mechanisms in oil/water gravity separators
Heimdal, Lars (Master thesis, 2011)The equipment used for bulk separation operations in offshore activities to produce oil and gas is an important part of the oil and gas production chain. The part of the separation where you separate water from oil is often ... -
Can flow oscillations during flow boiling deteriorate the heat transfer coefficient?
Park, Il Woong; Ryu, Jeongrim; Fernandino, Maria; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)Two-phase flow instabilities have been identified as one of the impediments for achieving high heat flux in boiling systems due to their potential heat transfer deterioration. However, most of the fundamental characteristics ... -
Can the heat transfer coefficients for single-phase flow and for convective flow boiling be equivalent?
Dorao, Carlos Alberto; Drewes, S; Fernandino, Maria (Journal article; Peer reviewed, 2018)During the past few decades, heat transfer during convective flow boiling inside pipes has been widely studied with the goal of unveiling the physics of the process. Different heat transfer mechanisms have been suggested ... -
CFD study of a rotating gas-liquid separator: Design og bygging av flere mikro-dråpe generatorer
Stene, Mari (Master thesis, 2013)Extracting Natural Gas from the reservoirs and transporting it to shore requires the gas to be pure from liquids and contaminants. These contaminants can be extracted from the gas by separators. A new separation technology, ... -
Computational User Support Tool for Decision Making Processes
Gulliksen, Caroline Bauge (Master thesis, 2013)A computational tool to perform calculations for the Decision-Support Problem (DSP) Technique is developed to aid decision-makers in evaluating technologies suited for design problems. The DSP Technique is presented in a ... -
Decision Making Methodology for the Selection of Gas-liquid Separators
Sanchez Perez, Carlos Eduardo (Master thesis, 2012)Gas liquid separation is a critical operation in many industries, including the gas and oil industry. In fact, costly equipment like heat exchangers and compressors rely on the good performance of gas scrubbers. In the ... -
Design and economical evaluation of components onboard LNG-FPSOs considering vibration and motion
kadambamattam, mithun thomas (Master thesis, 2011)AbstractLNG FPSO s are getting more interest as the new oil and gas reserves are found in sub seas. But a main technical challenge has been identified as the liquefaction systems since its considered as the bottle in natural ... -
Design and fabrication of micro-nano enhanced surfaces for controlling Leidenfrost point
Grøstad, Eivind (Master thesis, 2016)The technological revolution has driven the need for faster microprocessors. In order to fabricate faster microprocessors the trend has been to increase the amount of transistors and increase the clock speed. Microprocessor ... -
Design, Fabrication and Testing of Micro- Nanoscale Thin-Film Resistance Temperature Detectors
Gulliksen, Christian Georg Bauge (Master thesis, 2017)The development of the microelectronics industry has triggered a broad scientific revolution. The ever ongoing quest for miniaturization and the thermal challenges that follow have made heat transfer in confined spaces one ... -
Development of Small Scale LNG plants: Utvikling av småskala LNG anlegg
Rødum, Kristian (Master thesis, 2009)AbstractSINTEF Energy Research have for several years worked with a plant concept for small scale LNG production in the range from 5 to 20 tonnes per day. This process, called Mini-LNG, is based on mixed refrigerant and ... -
Effect of Heat Flux and External System Configuration on Pressure Drop Oscillations in a Horizontal Pipe
Langeland, Tina Louise (Master thesis, 2015)Heat transfer processes can greatly benefit from the use of the boiling and condensation in two-phase flows. However, the use of two-phase flows may induce instabilities in the heat transfer system, causing control problems ... -
Evaluation and Selection of the Precooling Stage for LNG Processes
Majzoub, Mohamad (Master thesis, 2012)As the worldwide energy consumption continues to grow, natural gas and especially LNG are expected to keep contributing significantly with this growth. More than 95% of the installed LNG facilities use a precooling cycle ... -
Experimental analysis of the pressure characteristic curve of a forced convection boiling flow in single horizontal channel
Doder, Dejan (Master thesis, 2013)Forced convection boiling flow, often referred to as two-phase flow, is a common phenomenon which occurs in many industrial processes. The relationship between the total pressure drop in a channel containing two-phase flow ... -
Experimental and modeling study of the droplet dynamics related to liquid-liquid separators
Bjerknes, Jenny Victoria (Master thesis, 2013)Separators are an integral part of oil and gas processing equipment. A high enough level of separation is needed both due to the sales specifications of the finished products, but also due to the effect poor separation may ... -
Experimental and numerical investigation of oil-water separation
Sørbø, Vegard (Master thesis, 2014)Separation of oil-water mixtures is essential to prepare the productsprior to transportation. This is, among others things, due to salesspecifications, minimisation of corrosion, and reduction of transporta-tion costs. The ... -
Experimental investigation of the impact in the heat transfer coefficient and pressure drop during boiling flow instabilities
Sørum, Mikkel (Master thesis, 2014)High heat transfer rates at reasonably low temperature differences can be obtained by utilizing a boiling fluid. The use of boiling heat transfer is often limited by onset of a heat transfer crisis named the Critical Heat ... -
Experimental Investigations On The Momentum Pressure Drop During Flow Boiling Of R134a
Muszynski, Tomasz; Andrzejczyk, Rafal; Dorao, Carlos Alberto (Journal article; Peer reviewed, 2018)The article presents experimental investigations of the pressure drop during two-phase flow. Experiments were performed for both adiabatic and heated flow of R134a. Obtained flow patterns were compared with the literature. ... -
Experimental study of bubble characteristics and heat transfer in subcooled flow boiling of R-134a
Park, Keun-Soo (Master thesis, 2013)Because of its high heat transfer efficiency, subcooled flow boiling can contribute to the miniaturization of subsea heat exchangers. An experimental investigation was conducted to study the parametric influence on the ...