Vortex tubes solve spot-cooling problems. Using compressed air as a power source, vortex tubes create two air streams, one hot and one cold, with no moving parts. These tubes can reproduce temperatures form -50 to 260F, flow rates from 1 to 150 scf/m, and refrigeration up to 10,200 BTU/hr. Catalog includes technical information on these and other products.
EXAIR Corp., 1250 Century Circle N., Cincinnati, OH 45246.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.