Browsing NTNU Open by Author "Hagen, Brede"
Now showing items 1-7 of 7
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A novel methodology for Rankine cycle analysis with generic heat exchanger models
Hagen, Brede; Nikolaisen, Monika; Andresen, Trond (Journal article; Peer reviewed, 2019)This study presents a novel approach for Rankine cycle (RC) analysis, introducing a generic counter current heat exchanger (HX) model to enable basic fluid thermal and flow behaviour in HXs to be considered in a cycle ... -
Analysis of the Trilateral Flash Cycle for Power Production from low Temperature Heat Sources
Trædal, Stian (Master thesis, 2014)SummaryIn this study, the Trilateral Flash Cycle (TFC) and the Partially Evaporating Cycle (PEC) have been analyzed and compared to the Organic Rankine Cycle (ORC) for power production from low temperature heat sources. ... -
Compact steam bottoming cycles: minimum weight design optimization and transient response of once through steam generators
Mocholí Montañés, Rubén; Skaugen, Geir; Hagen, Brede; Rohde, Daniel (Peer reviewed; Journal article, 2021)Compactness and weight minimization are key aspects for successful and widespread implementation of waste heat recovery steam cycles in off-shore oil and gas platforms due to the site weight and volume footprint constraints. ... -
Comparing Three Methods for Design Analyses of Rankine Cycle for Waste Heat Recovery from Natural Gas Compression
Deng, Han; Hagen, Brede; Nikolaisen, Monika; Andresen, Trond (Chapter, 2020)This study applies three methods for design of Rankine cycles utilizing waste heat in the oil and gas industry. The methods differ in the level of detail of heat exchanger model applied and in the flexibility with respect ... -
Dynamic Analysis of Energy Recovery Utilizing Thermal Storage from Batch-Wise Metal Casting
Andresen, Trond; Lingaas, Simon Johan Nilsen; Hagen, Brede; Nekså, Petter (Chapter, 2020)The thermal exergy contained in the liquid metal in ferroalloy production makes it an interesting source for energy recovery. The heat released during casting is rarely utilized today. This work investigates the feasibility ... -
Equation-oriented methods for design optimization and performance analysis of radial inflow turbines
Hagen, Brede; Agromayor, Roberto; Nekså, Petter (Peer reviewed; Journal article, 2021)This paper presents methods for design optimization and performance analysis of radial inflow turbines. Both methods are formulated in an equation-oriented manner and involve a single mathematical problem that is solved ... -
Gradient Based Design Optimization of a Radial Inflow Turbine
Hagen, Brede; Cavo, Matteo; Andresen, Trond; Nekså, Petter (Chapter, 2020)The expander is one of the key components of an ORC as the cycle efficiency strongly depends on the expander efficiency. This paper presents a method for design optimization of a radial inflow turbine (RIT) using a mean-line ...