Browse Publications Technical Papers 2006-01-2094
2006-07-17

International Space Station Water Usage Analysis 2006-01-2094

The International Space Station (ISS) supplies and recycles water. Until the water system loop is closed with 100 percent recycling, monitoring water usage on-orbit is critical. The water supply on-orbit is monitored to stay above the skip cycle. If the rate is higher than predicted, then the water supply may become too low to support the crew. Both U.S. and Russian water experts use the water usage rate to determine the quantity of water to be re-supplied on each vehicle. The paper provides an overview of the ISS water system. It discusses the newly revised water balance. The paper describes the methodology used to calculate water usage rates. The analysis provides the water usage rates for each Expedition crew. The analysis compares these results to the consumable reports and the Russian water expert reports. The paper provides a discussion of the results of the various usage rates. It provides the most accurate methods for assessing water usage.

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