Tag Archives: effect

Waterjetting 33a – Waterjet structure and its effect


When a waterjet first comes out of an orifice the flow (providing the upstream conditions are properly aligned) will form a cylindrical stream, with the jet pressure across that stream relatively constant. Within about an inch, depending on the flow conditions, ripples start to appear on that smooth cylinder (Rayleigh waves) and these grow and […]

Financial hedging helps some producers mitigate effect of falling oil prices

April 2, 2015 Source: U.S. Energy Information Administration, based on Evaluate EnergyNote: Hedging is a financial risk-reduction strategy that market participants can use to lock in future prices. The decline in crude oil prices since last summer has had a direct impact on oil producers’ sales revenue, but hedging strategies have lessened the effects of […]

Large reduction in distillate fuel sulfur content has only minor effect on energy content

February 24, 2015 Source: U.S. Energy Information Administration, Note: Distillate fuel volumes with sulfur content below 15 parts per million produced before 2004 are included in the ‘between 15 and 500 ppm’ category. Distillate fuel supply for 2014 includes estimated volumes for December 2014 from the Short-Term Energy Outlook, February 2015. Republished February 24, 2015, […]

Energy efficiency improvements have largely offset effect of more, larger homes

February 18, 2015 Source: U.S. Energy Information Administration, Drivers of Household Energy Consumption The growth in residential energy use has slowed to below the rate of household growth, meaning that per-household energy consumption has decreased. Analysis of EIA’s conducted since 1980 shows how improvements in energy efficiency reduced energy intensity enough to offset more than […]

Gasoline prices tend to have little effect on demand for car travel

December 15, 2014 Source: U.S. Energy Information Administration, based on Federal Reserve Bank of St. LouisNote: VMT is vehicle miles traveled. Per capita figures reflect U.S. population age 16 and over. Vehicle miles traveled figures are 12-month rolling averages. Republished December 17, 2014, 2:00 p.m. to correct an error in the graph. The U.S. average […]

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