As of Friday, the three Chinese language astronauts, or taikonauts, despatched to house by the Shenzhou-12 spacecraft to the nation’s house station named Tiangong, have spent about 36 days, breaking the 33-day document set by the Shenzhou-11 crew in 2016.
Water is significant for all times. Due to this fact, a protected and dependable water provide is important for astronauts staying for a very long time within the house station.
Water is made obtainable for the taikonauts in 3 ways: transported by spacecraft, on-site era and recycling.
Earlier than the launch of Shenzhou-12, the Tianzhou-2 cargo craft despatched water provides to the core module for the Shenzhou-12 crew. In keeping with the China Manned House Company, greater than 10 baggage of water for each day use and electrolytic oxygen era had been delivered to the core module.
Water will also be generated on the house station by a gasoline cell, with hydrogen and oxygen being mixed to type water on two electrodes within the presence of a catalyst. This response additionally generates vitality which is transformed into electrical energy to energy the house station.
The water generated by means of the response is cooled, and its temperature is introduced all the way down to 18 to 24 levels Celsius and purified by a silver ion sterilizer earlier than being despatched to a storage tank.
Recycle and reuse
In the course of the taikonauts’ three-month keep, numerous water is consumed. Recycling and reuse of water might help meet the water demand.
To make sure its economical long-term operation, the house station makes use of the Environmental Management and Life Help System (ECLSS) to comprehend the recycling of provides. As well as, it performs an essential function in water recycling.
The ECLSS can accumulate the water vapor exhaled by the taikonauts by way of a condensing and drying module. Then, handled by a purification gadget, the condensate is transformed into recycled water for ingesting.
Urine produced by the taikonauts can also be collected and handled to extract purified water.
Information on human physiological exercise reveals that every astronaut generates about two kilograms of urine and flushing water per day within the house station. They exhale about 1.8 kilograms of water vapor into the cabin throughout the identical interval.
The ECLSS can accumulate the urine from the taikonauts and the water condensate within the cabin after which deal with it into purified water, offering a vital supply of ingesting water in house.
(With enter from Xinhua)