They don’t exist. If you want them, you have to take them with you when you launch from earth.
The water is brought from earth or is produced as a by-product of fuel cells on the orbiter. The Shuttle Transportation System (STS)
The International Space Station
Solar panels do not produce water.
Water – transported @ $10,000 pound
1/8 gallon Glass of water 3 gallons Brushing teeth, 2 mins, water on 2 gallons Washing hands/face 3 gallons every flush Flushing a toilet 36 gallons Taking a shower, 20 mins. 50 gallons Taking a bath USE ACTIVITY
How much do you estimate that you use in one day? How much do you use daily? How much would in 4 months? (laundry, gardening, too) What would be the cost to LAUNCH the water you need for four months?
The Cost of Water
A crew of 4 astronauts uses about 40,000 pounds of water in one year.
40,000 pounds of water $10,000 per pound to launch water
How does NASA limit the amount of water needed on the ISS?
Brushing Teeth – No Rinsing Needed
Shampoo – No rinsing required Shower/Bath – A nozzle-moistened washcloth One gallon of water
CONSERVATION ISN’T ENOUGH
Existing water must be recycled or reprocessed
What is existing water? perspiration urine respiration Human and Animal
COPING WITH REPROCESSED WATER
Think about how water is recycled in nature
Waste products filter through the ground water system, to the rivers, to our communities
NASA imitates Mother Nature
Water Purification Investigation Gravel Sand Charcoal Nylon stocking
Water Life Support System – Node 3 2005
VCD BENEFITS Process about 4,400 lbs of water annually for ISS Human exploration beyond the moon requires such recycling systems Implications for Earth – 6.2 billion+ (abundant, reliable, affordable sources of water)
Control and Environmental Life Support Systems (ECLSS)
Recycle wastewater to produce drinking water
Store and distribute potable water
Use recycled water to produce oxygen for the crew
Remove carbon dioxide from the cabin air
Ventilation of ISS modules
Filter the cabin air for particulates and microorganisms
Remove volatile organic trace gases from the cabin air