Author Archives: Melany Krangle

Smart Meter Security

In the wrong hands, technology exists whereby on a small scale, a neighbour could turn off another neighbour’s power supply. Moving up rogue groups could cause widespread power outages or co-ordinate power outages to attack sensitive facilities. At the largest scale governments could remotely shut down smart meters to meet energy saving targets or to […]

Shale Gas Extraction

Shale gas is extracted using horizontal drilling and hydraulic fracturing or ‘fracking’. None of which are particularly new technologies or shale gas specific. Horizontal drilling During the process wells are drilled vertically to just above the known shale deposit at a depth of 1,500 to 3,000 metres. Then the drill bit is deviated and drilled […]

Calculations to determine reserve values

There are two primary ways to determine reserve quantities: the volumetric method and decline curve analysis. The volumetric method This calculation is derived from the formulae – Gas-in-Place = 43,560 * A * H * f * Sg * Bg Reserves = (Recovery Factor) * (Gas-in-Place) This method may appear to be fairly ironclad until […]

Waste Water Treatment

Preliminary treatment/screening Preliminary treatment screens out, grind up, or separate debris is the first step in wastewater treatment. Sticks, rags, large food particles, sand, gravel, toys, etc., are removed at this stage to protect the pumping and other equipment in the treatment plant. Treatment equipment such as bar screens, comminutors (a large version of a […]

Talking Energy

Periodically, NRG Expert releases its Talking Energy Newsletter. Taking Energy takes a look at the energy stories making the news. Presented as a digest, information from around the world and around the internet is shown together with the full links to the articles’ original source. Fit into a number of broad categories, Talking Energy always […]

Wind Turbine

Increases in wind turbine size The average turbine size installed each year in the leading wind power countries increased steadily from 145 kW in 1989 to 2,158 kW as of May 2011.Turbines models with a larger capacity are penetrating the market to a larger extent while the popularity of smaller turbine models is waning. Larger […]

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