ABC Analysis: A classification of items in an inventory according to importance defined in terms of criteria such as sales volume and purchase volume. ABC Classification: Classification of a group of items in decreasing order of annual dollar volume or other criteria. This array is then split into three classes called A, B, and C. The A group represents 10 to 20% by number of items, and 50 to 70% by projected dollar volume. The next grouping, B, represents about 20% of the items and 20% of the dollare volume.
Fuel cells (batteries) provide another use option, just as they were utilized by NASA. Fuel cells basically reverse electrolysisâhydrogen and oxygen are combined to produce electricity. Hydrogen fuel cells are very efficient and produce only water as a by-product, but they are expensive to build. With technological advances, small fuel cells could someday power electric vehicles and larger fuel cells could provide electricity in remote areas. Because of the cost, hydrogen will not produce electricity on a
Hydrogen Fuel. Hydrogen is one of two natural elements that combine to make water. Hydrogen is not an energy source, but an energy carrier because it takes a great deal of energy to extract it from water.It is useful as a compact energy source in fuel cells and batteries.Many companies are working hard to develop technologies that can efficiently exploit the potential of hydrogen energy.ydrogen Fuel. Hydrogen is one of two natural elements that combine to make water. Hydrogen is not an energy source, but an energy carrier because it takes a great deal of energy to extract it from water.