CEE_TechnicalReport_Final

CEE_TechnicalReport_Final - Introduction Pump and Area...

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Pump and disinfection system Dirty tank Clean tank Office/Lab Living Area 50 people Living Area 50 people Living Area 50 people Technical Report Introduction On October 12, 2009, the National Aeronautics and Space Administration (NASA) secretly disclosed an ambitious project to our Civil and Environmental Engineering Department located at University of California, Berkeley. The NASA planed to create a lunar base for the advancement of humanity; yet they were faced with challenges that required our assistance. One major constraint on the space mission is the availability of water. Unlike Earth, the lunar base is subject to a limited supply. Being elite crew of the CEE Department of Berkeley, Yang Xia, Elysia Liaw and Jin Woo Roh, we were adjoined as a team to develop a comprehensive design of a water system to keep the crew of 150 astronauts supplied with water in the base. Water Supply Our first step is to analyze the amount of water needed for the crew of 150 for one day. Taking personal hygiene, cooking, drinking, and others into account, we have determined the following: Activity Daily Consumption of Water per Person (Liters) Shower 75.7 Laundry 7.57 Toilets 18.925 Faucets 18.925 Dishwasher 26.795 Drinking 3.785 Cooking 7.57 Total 160 We can therefore safely estimate the person’s water consumption for one day is 160 Liters per person. The astronauts in space do not have an endless supply of water, and thus the logical choice is to recycle water. Given that the water will be recycled continuously, we will need enough water to maintain storage of: * 160 Liters1 Day 1 Person * ( ) 150 persons * (1 Day) = 24000 Liters This is the amount that the 150 astronauts will use per day. With the help of the recycling team, we know that latest current water-recycling technology enables us to recycle around 90 percent of the water used (Bell). At this rate, astronauts will waste approximately: 24000 Liters1 Day * . = 0 1 2400 Liters1 Day . We will then make an assumption that replenishments will arrive every year. Accounting the water that will be wasted, the initial water supply that must be: 24000 Liters + * 2400 Liters1 Day 365 Days = 900000 Liters. Total Cost
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Next, our engineering team decided to assay the total cost of lifting things into space. With the help of the research team in NASA, the cost is $10000 per pound (Bonsor). Using the Using the SI system: * . = . 10000 Dollars1 Pound 1 Pound0 4536 Kilograms 22045 86 Dollars1 Kilogram 22000 Dollars1 Kilogram Given that water has a density of one kilogram per liter, we have analyzing the cost of bringing up all the necessary water that will be used for a day:
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CEE_TechnicalReport_Final - Introduction Pump and Area...

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