An example of efficient in everyday life is using a dishwasher instead of hand washing dishes for a large family, a modern Energy Star dishwasher uses about 3 to 4 gallons of water and 1 kilowatt hour of electricity to clean a full load, while hand washing the same amount can use 20 gallons of water and more time and energy. Another example is an efficient worker who answers 20 customer emails in an hour by using pre-written templates and keyboard shortcuts, versus an inefficient worker who types each response from scratch and answers only 8. In energy terms, an example of efficient is a home with R-49 attic insulation and air sealing that stays warm in winter using half the heating energy of a poorly insulated home. In transportation, a person who combines grocery shopping, pharmacy, and post office into one trip around town is efficient, saving fuel and time compared to three separate trips. In manufacturing, a factory that reuses waste heat from one process to warm another process is efficient. All these examples share the same pattern, achieving the same desired outcome with less time, less energy, less money, and less waste, which is the essence of being efficient.
1 votes
Marked as accepted