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fisher007 发表于 2013-5-5 21:35 
好奇问下洗碗机耗多少水耗多少电?
http://1greengeneration.elementsintime.com/?p=314
The University of Bonn also conducted a study of 113 people from 7 European countries (PDF), comparing their water usage with a dishwasher and without.
Interestingly, they categorized the different hand washers as “super dishwashers” (people who preclean, soap clean, and rinse), “dishwashing economizers” (people who squirt detergent on the sponge and try to use as little water as possible), and “care-free dishwashers” (people who used as much water and detergent as they wanted to without thinking about it). But noted that economizers didn’t always end up using less than the other two groups.
Each person washed 12 place settings. On average, hand washing used 27 gallons (103 liters) of water, and 2.5 kWh of water-heating energy. The human time it took to wash, rinse, dry, and put away was approximately 80 minutes.
The dishwasher used approximately 4 gallons (15 liters) of water, consumed 1-2 kWh of total energy, and required 15 minutes of human time (loading and unloading the dishwasher). All in all, the dishwashers got the dishes cleaner, in less human time, using less water and energy. |
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