The CRS report noted that, at the moment, the two railgun prototypes built by Raytheon and General Atomics for the US Navy: "are designed to fire projectiles at energy levels of 20 to 32 megajoules
, which is enough to propel a projectile 50nm (92km) to 100nm (185km).
Emission factors based on useful energy delivered have denominators with units of megajoules
Nonrenewable energy inputs, including nonenergy material inputs, per megajoule
of energy output for residential heating in Wisconsin.
Polyurethane, for example, has a high level of embodied energy per kilogram compared to stone or glass wool or wood fiber but in terms of megajoule
per 100 square meters the amount of embodied energy in polyurethane is much lower than these other materials," he said.
Tax by megajoule
rather than gallon, they say, and promote renewability.
production: 5 grams of carbon equivalent per megajoule
Compared to fossil-derived petrol, bio-ethanol from wheat has the potential to reduce energy inputs by 61% and total greenhouse gas emissions by 65% for each megajoule
of energy created.
The second, the Megajoule
Laser (LMJ), will study the physical mechanisms of thermonuclear fission by reproducing conditions of temperature and density using a series of 240 laser beams.
National Laboratory (LLNL) and the 240-beam Laser Megajoule
at Bordeaux, France, will support nuclear weapons and energy research (SN: 10/19/96, p.
The study says it takes 45 megajoules
of energy to produce one megajoule
of food intake of salad vegetables.
Contract notice: Cabling services for the laser megajoule
(lmj) installation process.
For a racer in the 6 megajoule
(MJ) class, this translates to expending no more than 1.