Electricity

The latest articles related to Electricity

Aquanator – Introduction

Aquanator is a proposed device using hydrofoils (an underwater version of airfoils) to generate electricity from water currents. “Aquanator” is a trademark of Atlantis Resources Corporation Pte. Limited. The Aquanator utilizes rows of sail-like aquafoils/hydrofoils to generate electricity from water currents. These devices can be compared to as underwater windmills. They turn silently and power [...]

Washington Initiative 937 (2006) – Content of the proposal

The initiative proposes to require large utilities to obtain 15% of their electricity from new renewable resources such as solar and wind but excluding hydro by 2020 with incremental steps of 3% by 2012 and 9% by 2016 along with undertaking cost-effective energy conservation. Adapted from the Wikipedia article Washington Initiative 937 (2006), under the [...]

Renewable energy in Brazil – Introduction

Renewable energy in Brazil accounted for more than 85.4% of the domestically-produced energy used in Brazil, according to preliminary data from the 2009 National Energy Balance, conducted by the Energy Research Corporation (EPE). After the oil shocks of the 1970s, Brazil started focusing on developing alternative sources of energy, mainly sugarcane ethanol. Its large sugarcane [...]

Power station – Thermal power stations

In thermal power stations, mechanical power is produced by a heat engine that transforms thermal energy, often from combustion of a fuel, into rotational energy. Most thermal power stations produce steam, and these are sometimes called steam power stations. Not all thermal energy can be transformed into mechanical power, according to the second law of [...]

Polymer solar cell – Introduction

Polymer solar cells are a type of flexible solar cell. They can come in many forms including: organic solar cell (also called plastic solar cell), or organic chemistry photovoltaic cell that produce electricity from sunlight using polymers. There are also other types of more stable thin-film semiconductors that can be deposited on different types of [...]

Photovoltaic thermal hybrid solar collector – Introduction

Photovoltaic thermal hybrid solar collectors, sometimes known as hybrid PV/T systems or PVT, are systems that convert solar radiation into thermal and electrical energy. These systems combine a photovoltaic cell, which converts electromagnetic radiation (photons) into electricity, with a solar thermal collector, which captures the remaining energy and removes waste heat from the PV module. [...]

Powertraveller – Products

powermonkey classic Launched in 2005, the powermonkey was the first portable power product to be launched by Powertraveller. Compatible with mobiles phones, iPods, hand-held games consoles, sat navs, PDAs and GPS units, the powermonkey is supplied with ten tips for the most popular devices – including an iPod tip – plus a worldwide mains adapter. [...]

Photoelectrochemical cell – Introduction

Photoelectrochemical cells or PECs are solar cells which generate electrical energy from light, including visible light. Each cell consists of a semiconducting photoanode and a metal cathode immersed in an electrolyte. Some photoelectrochemical cells simply produce electrical energy, while others produce hydrogen in a process similar to the electrolysis of water. Adapted from the Wikipedia [...]

GreenSun Energy – Introduction

GreenSun Energy is a Jerusalem-based Israeli company that has developed a new process for producing electricity from solar energy. As The Economist points our, solar energy is a logical development since “Israel is a country with plenty of sunshine, lots of sand and quite a few clever physicists and chemists.” Adapted from the Wikipedia article [...]

Self-replication – Self-replication in industry

Space exploration and manufacturing The goal of self-replication in space systems is to exploit large amounts of matter with a low launch mass. For example, an autotrophic self-replicating machine could cover a moon or planet with solar cells, and beam the power to the Earth using microwaves. Once in place, the same machinery that built [...]

MHD generator – Introduction

MHD (magnetohydrodynamic) generator or dynamo transforms thermal energy or kinetic energy directly into electricity. MHD generators are different from traditional electric generators in that they can operate at high temperatures without moving parts. MHD was developed because the exhaust of a plasma MHD generator is a flame, still able to heat the boilers of a [...]

Driedorf – Economy and infrastructure

For a few years, the Westerwald’s wind has been being used to generate electricity. Driedorf has 17 windfarms, 6 in Mademühlen, and the others distributed among the other centres which all together generate 13 GWh, amounting to 40% of the community’s needs. Wind energy has reduced the yearly CO2 output by about 7& 000& t. [...]

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