We just replaced some bulbs at work, in four specific pump rooms- the former incandescents had been replaced by CFLs which rarely lasted a year (constant on, inside vapor glass/cage enclosures). They also found LED bulbs to replace the larger metal halide bulbs directly, with no change to the fixtures. These also have glass enclosures with cages. MUCH brighter, and no where near the heat from the metal halides. Looking forward to observing the lifespan of the LEDS, I understand engineering is working on total plant replacements. We are hard on all bulbs, with an inherent vibration and higher average voltage than normal (132ish)
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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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