E10 Group Assignment2 - cap) 1 6 6 2 5 11 3 114 125 4 3.5...

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Elysia Liaw, Jin Woo Roh, Yang Xia Engineering 10 – CEE Module B Otcober 27, 2009 For one astronaut: The astronaut drinks 0.05 gallons of water for every hour he’s awake. In addition, the astronauts use waterless toilets. Other water usages are indicated in the chart. Hour Hourly Water Consumption (gal/hr/cap) Cumulative Water Consumption (gal/cap) 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0.08 (brushing teeth and preparing food) 0.08 8 0.05 0.13 9 0.05 0.18 10 0.05 0.23 11 0.05 0.28 12 0.05 0.33 13 0.07 (preparing food) 0.4 14 0.05 0.45 15 0.05 0.5 16 0.05 0.55 17 0.05 0.6 18 0.05 0.65 19 0.07 (preparing food) 0.72 20 0.05 0.77 21 2.23 (sponge bath + brushing teeth) 3 22 0 3 23 0 3 24 0 3
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For 150 astronauts: The astronauts are divided into 3 groups, 50 people each. They take turns sleeping, with shifts from 10pm-6am, 6am-2pm, and 2pm-10pm, and each group’s schedule is shifted by 8 hours, allowing them to stagger their water use. Hour Hourly Water Consumption (gal/hr*cap) Cumulative Water Consumption (gal/
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Unformatted text preview: cap) 1 6 6 2 5 11 3 114 125 4 3.5 128.5 5 2.5 131 6 2.5 133.5 7 6.5 140 8 5 145 9 5 150 10 6 156 11 5 161 12 114 275 13 7.5 282.5 14 5 287.5 15 5 292.5 16 5 297.5 17 5 302.5 18 5 307.5 19 7 314.5 20 5 319.5 21 114 433.5 22 6.5 440 23 5 445 24 5 450 From the chart of Daily Water Consumption of 150 People by hour, we can see that the water consumption rate for one day is 18.816 Gal/hour. In order to prevent water from running out at anytime of the day, we shift the line up and find the water supply line to be y = 18.816x + 100. The biggest difference between the daily consumption and daily supply gives the room we need for storage. From the chart, the biggest difference is 145.876 gallons, which occurs at the 13 th hour. To be safe, we increase the volume a little and set the tank size to be 150 gallons....
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This note was uploaded on 02/09/2010 for the course ENGIN 10 taught by Professor Johnson during the Fall '08 term at University of California, Berkeley.

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E10 Group Assignment2 - cap) 1 6 6 2 5 11 3 114 125 4 3.5...

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