Enige aspecten van het gedrag van een flexibele koudwaterpijpleiding voor een 10 MW OTEC centrale

Een OTEC-centrale maakt gebruik van de temperatuurverschillen tussen het warme oppervlaktewater (tropen) en het dieper gelegen koude water, om energie op te wekken. Zo'n centrale kan op het land (aan de kust ) worden gebouwd, maar ook drijvend worden uitgevoerd. Een belangrijk onderdeel dat in het verleden al problemen heeft veroorzaakt is de...

Floating breakwaters: Literature review

The purpose of this report is to find out which floating breakwaters can be utilized in open sea conditions and what can be expected of them. Since every breakwater interferes with the energy of the waves, it is logical that a probable power generation function of floating breakwaters is also investigated. This report is a global review of the...

Kleinschalige waterkracht in Nederland

In dit rapport wordt een overzicht gegeven van de stroomgebieden in Nederland die door de natuurlijke omstandigheden mogelijkheden geven om kleinschalige waterkracht toe te passen. Na de afbakening van de omvang van het onderzoek \\Drdt in hoofdstuk 3 een overzicht gegeven van verschillende turbines en hun toepassingsgebieden. Het blijkt dat...

Aspects of a tidal power scheme in the Wyre Estuary

In 1987 a study of small estuaries around the coast of the United Kingdom was undertaken by Binnie & Partners for the Department of Energy. The Wyre was identified as one of the most promising sites for the construction of a small tidal power scheme. The Wyre Estuary is located in Lancashire on the north west coast of England. The estuary...

Tapchan golfenergie

In dit afstudeerwerk is onderzoek gedaan naar een veelbelovend type golfenergiecentrale die elektriciteit opwekt uit windgolven: de Tapchan golfenergiecentrale. Het oorspronkelijke idee van deze centrale komt van het ingenieursbureau Norwave a.s. Bij de Tapchan golfenergiecentrale vindt de omzetting van golfenergie in elektrische energie plaats...

Wave Energy Conversion: Theory of wave energy conversion; Wave energy converters, the state of the art; Design of a wave power converting breakwater for the Port of Bilbao, North Spain

Since the awareness that the conventional energy sources will run short, the use of various renewable energy sources has been investigated, these are solar, wind, ocean and geothennal energy. Quite some countries are interested in wave energy conversion. In several countries some full-scale wave energy converting pilot plants have been tested....

Power from ocean waves: A study to power conversion with the Archimedes Wave Swing

Moment formation and giant magnetocaloric effects in hexagonal Mn-Fe-P-Si compounds

Limited resources and the wish for improved prosperity call for efficient use of energy. The UN Advisory Group on Energy and Climate Change recommends a target of 40 % improved efficiency by 2030. Materials research can contribute significantly to reach this target. Magnetic refrigeration offers potential to achieve a 50 % higher energy...

Low Emission Conversion of Fossil Fuels with Simultaneous or Consecutive Storage of Carbon Dioxide

This thesis evaluates the possibility of using underground coal gasification with a low CO2 footprint. The thesis consists of two parts. In the first part, by using the concept of exergy, a framework was constructed through which the practicality (feasibility) of an energy conversion/extraction method can be systematically evaluated. This...

Converting Waste Toilet Paper into Electricity: A First-Stage Technoeconomic Feasibility Study

We studied the possibility of converting waste toilet paper (WTP) into electricity. WTP is a waste stream with continuous availability and negative cost, but it is difficult to handle, as it contains fecal matter. The process we explored had two stages: WTP gasification followed by direct conversion into electricity in a high-temperature...

Durability Testing of Photoelectrochemical Hydrogen Production under Day/Night Light Cycled Conditions

This work investigates long-term photoelectrochemical hydrogen evolution (82 days) in 1 M HClO4 using a TiO2:H protected crystalline Si-based photocathode with metal-oxide-semiconductor (MOS) junctions. It is shown that day/night cycling leads to relatively rapid performance degradation while the photocurrent under the continuous light condition...

Harnessing Plasticity in an Amine-Borane as a Piezoelectric and Pyroelectric Flexible Film

We demonstrate that trimethylamine borane can exhibit desirable piezoelectric and pyroelectric properties. The material was shown to be able operate as a flexible film for both thermal sensing, thermal energy conversion and mechanical sensing with high open circuit voltages (>10 V). A piezoelectric coefficient of d₃₃≈10–16 pC N...

Two raft wave energy converters: A combined optimisation of annual energy conversion and stability

Global warming has caused an increasing demand for renewable energy. Currently, 50% of the renewable energy is provided by wind and solar combined. However, these renewable energy sources are highly volatile. Wave energy converters can provide a stable renewable energy source. Previous research has contributed to understanding various combined...