Welcome to the session of The International Space Station Conference – on the screen you can see flags of each of the countries who serve as partners in this exciting space venture.
Let’s make sure that you’re in the session you want to be in right now. This is “Every Drop Counts” and I’ll be sharing with you some exciting information about water and the International Space Station.
Every drop counts
International Space Station Educators Conference
In space, what do water and air have in common?
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 <ul><li>Solar panels do not produce water. </li></ul><ul><li>Water – transported @ $10,000 pound </li></ul>
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 <ul><li>A crew of 4 astronauts uses about 40,000 pounds of water in one year. </li></ul>
40,000 pounds of water $10,000 per pound to launch water
How does NASA limit the amount of water needed on the ISS?
Shampoo – No rinsing required Shower/Bath – A nozzle-moistened washcloth One gallon of water
CONSERVATION ISN’T ENOUGH <ul><li>Existing water must be recycled or reprocessed </li></ul>HOW?
What is existing water? perspiration urine respiration Human and Animal
COPING WITH REPROCESSED WATER <ul><li>Think about how water is recycled in nature </li></ul><ul><li>Waste products filter through the ground water system, to the rivers, to our communities </li></ul><ul><li>NASA imitates Mother Nature </li></ul>
Water Purification Investigation Gravel Sand Charcoal Nylon stocking
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)
<ul><li>Recycle wastewater to produce drinking water </li></ul><ul><li>Store and distribute potable water </li></ul><ul><li>Use recycled water to produce oxygen for the crew </li></ul><ul><li>Remove carbon dioxide from the cabin air </li></ul><ul><li>Ventilation of ISS modules </li></ul><ul><li>Filter the cabin air for particulates and microorganisms </li></ul><ul><li>Remove volatile organic trace gases from the cabin air </li></ul><ul><li>Detect and suppress fire </li></ul><ul><li>Maintain cabin temperature and humidity levels </li></ul>ECLSS