Search for dissertations about: "surface waters"

Showing result 1 - 5 of 229 swedish dissertations containing the words surface waters.

  1. 1. Sea Level Compensation System for Wave Energy Converters

    Author : Valeria Castellucci; Rafael Waters; Ronan Costello; Uppsala universitet; []
    Keywords : Ocean energy; Tides; Linear generator; Point absorber; Offshore experiment; Hydro-mechanic modeling; Power absorption; Control system; Communication system; Measurement system; Lysekil research site; Wave Hub.;

    Abstract : The wave energy converter developed at Uppsala University consists of a linear generator at the seabed driven by the motion of a buoy on the water surface. The energy absorbed by the generator is negatively affected by variations of the mean sea level caused by tides, changes in barometric pressure, strong winds, and storm surges. READ MORE

  2. 2. Hydrodynamic Modelling of Wave Power using Electrical Equivalent Circuit Theory

    Author : Ling Hai; Mats Leijon; Rafael Waters; Lars-Göran Westerberg; Uppsala universitet; []
    Keywords : wave energy; hydrodynamic modelling; electric circuit; force and power analysis;

    Abstract : Ocean wave energy can be harnessed and converted into electric energy nowadays. This provides a possibility for populations that live on islands or along coastlines to utilize the renewable and safe power produced by ocean waves. READ MORE

  3. 3. Modelling Wave Power by Equivalent Circuit Theory

    Author : Ling Hai; Mats Leijon; Rafael Waters; Yongliang Zhang; Uppsala universitet; []
    Keywords : Wave energy; hydrodynamics; electric circuit; electrical analogy; energy absorption; force; system modelling; Simulink; engineering science; renewable energy; Teknisk fysik med inriktning mot elektricitetslära; Engineering Science with specialization in Science of Electricity;

    Abstract : The motion of ocean waves can be captured and converted into usable electricity. This indicates that wave power has the potential to supply electricity to grids like wind or solar power. A point absorbing wave energy converter (WEC) system has been developed for power production at Uppsala University. READ MORE

  4. 4. Numerical Modelling and Mechanical Studies on a Point Absorber Type Wave Energy Converter

    Author : Yue Hong; Rafael Waters; Mikael Eriksson; Cecilia Boström; Jørgen Hals Todalshaug; Uppsala universitet; []
    Keywords : linear generator; point absorber; numerical modelling; power production; optimal damping; Teknisk fysik; Engineering Science;

    Abstract : Oceans cover two thirds of the Earth’s surface and the energy potential of ocean waves as a renewable energy source is huge. It would therefore be a tremendous achievement if the vast mechanical energy in waves was converted into a form of energy that could be used successfully by society. READ MORE

  5. 5. Microbial Risks in Surface Water Sources

    Author : Johan Åström; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Surface water; Bifidobacteria; Microbial source tracking; Cryptosporidium.; QMRA; Flow-weighted sampling; Pathogens; Bacteroidales; Stochastic modelling; qPCR;

    Abstract : Microbial risks need to be properly handled for the provision of healthy drinking water. The mitigation of pathogens in the water source lowers the risk for infection associated with nominal and suboptimal drinking water treatment. READ MORE