Some of the better combined cycle gas turbines and coal thermal plants are pushing 50% efficiency. Problem is there is barely enough installed capacity to carry peak loads Mon-Fri during the daytime and early evening. From approx 6 or7AM to appprox 7or 9 or so PM is peak demand for 12-15 hrs. To plug in electric cars galore daytime will require every dirty antiquated coal thermal plant to be fired up. Electric cars plugged in at 08:00 and 5,6,7PM when people get home. That isn't making clean air with electric cars. More high priced peak generating plants will have to be built to carry the electric cars. These $$$ are going to sit idle all weekend and from midnight to morning weekdays. Net result is your hydro bill is going up per KW/hr. For electric cars to work the only time to plug them in weekdays is 11:00AM to 4PM during the spring and fall.And not at all during the summer and winter. Any time weekends and from midnight to 6:00AM.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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