Thermal efficiency improvement of closed hydrogen and oxygen fuelled combined cycle power plants with the application of solid oxide fuel cells using an exergy analysis method

Today’s renewables, wind and solar power, have a fluctuating nature, making the grid less stable.However, with the increasing share of intermittent sources of renewable power, novel options have to be created to stabilize the power grid. One of these options is energy storage via the conversion of excess power to hydrogen, during periods of high...

Process Chain Development of a ReSOC System with ammonia as fuel and steam electrolysis

Energy storage systems are an emerging field of interest for the future of electrical grids. With the rapid growth of renewable but intermittent sources of electricity, energy storage systems can help smooth the variations, making the grid more stable and reducing the need for maintaining an overcapacity of power production infrastructure. Among...

Design and test of a heat pipe for geothermal applications

Heat pipes are typically used in the semiconductor industry. This means that the scale of these heat pipes is typically in the order of centimeters. Zijm suggests that heat pipes could be used for geothermal applications, but literature is lacking. To further investigate the geothermal application of heat pipes, a large scale heat pipe is built....

A critical review of Adsorption Desalination: The road to sustainable desalination or whisful thinking

Water is the most dominant substance on the planet and has always been a synonym for life. On this planet, water has always been plentiful. Therefore, the conclusion of the United Nations in 2015 was even more shocking. The United Nations estimated that in 2030 a water gap would exist of 40%. The withdrawal of fresh water would be 40% larger...

High Frequency Oscillations in a Combustion Chamber: A Novel Mitigation Strategy

Restrictions on NOx emissions are increasingly stricter. In order to reduce the emissions of a gas turbine, manufacturers moved from diffusion-flames to lean premixed flames in their combustion process. However lean premixed flames are prone to (transverse) combustion instabilities. These instabilities consists of thermoacoustically driven...

Gas Turbines for Heat Generation: Conceptual Comparison & Design for Stack Loss Reduction

Firing industrial installations, like boilers, with a cogeneration gas turbine instead of a classic burner have several beneficial aspects. A cogeneration system allows for a more efficient utilization of energy and lowered emissions. What makes such a system especially interesting is that the revenue of the generated electrical power can...

Impact of Exhaust Gas Recirculation on NOx emissions in non-premixed combusted Gas Turbines using CRN

The major challenges in the world today is to reduce pollutant emissions from gas turbines while still being able to retain the maximum efficiency in the gas turbine. Especially due to stringent norms on emissions, the research on gas turbines have increased to reduce NOx levels. Most of the gas turbines have been using non-premixed combustion...

Interfacial profiles of wavy film flow in vertical pipe at low Reynolds numbers – an experimental study

A liquid film falling vertically along a wall results in the formation of waves at the liquid-gas interface. The principal forces in these flows are gravity, viscosity, and surface tension, which are characterized by the Reynolds number, Re and the Kapitza number, Ka. Experimental characterization of the film flows for high viscosity liquids (Ka...

SOFC anode modelling using TPB based kinetics

Solid oxide fuel cell exhibits its advantages such as fuel variability. Capable of running on renewable fuels, SOFCs are regarded as potential solution to carbon-neutral energy conversion path. SOFCs operate on fuel supplied to the anode and oxidant supplied to the cathode. The anode should facilitate the oxidation of fuel and transport of...