Astronauts brew tea on the ISS using specially designed pouches and hot water dispensers.
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Available records confirm that astronauts and cosmonauts on the International Space Station prepare tea and other beverages using hot water dispensers like the Potable Water Dispenser alongside specially designed food and drink packages or bags.
<div class="htmlview paragraph">The International Space Station (ISS) Russian Segment currently provides potable water dispensing capability for crewmember food and beverage rehydration. All ISS crewmembers rehydrate Russian and U.S. style food packages from this location. A new United States On-orbit Segment (USOS) Potable Water Dispenser (PWD) is under development. This unit will provide additional potable water dispensing capability to support an on-orbit crew of six.</div>
<div class="htmlview paragraph">The PWD is designed to provide incremental quantities of hot and ambient temperature potable water to U.S. style food packages. It will receive iodinated water from the Fuel Cell Water Bus in the U.S. Laboratory element. The unit will provide potable-quality water, including active removal of biocidal iodine prior to dispensing. A heater assembly contained within the unit will be able to supply up to 2.0 liters of hot water (65 to 93°C) every thirty minutes. This quantity will allow three to four crewmembers to rehydrate their food and beverages from this location during a single meal. The unit is designed to remain functional for up to ten years with replacement of limited life items such as filters. It will be the size of two stacked Shuttle Middeck lockers (approximately the size of two small suitcases) and integrated into a science payload rack in the U.S. Laboratory element.</div>
<div class="htmlview paragraph">Providing potable-quality water at the proper temperature for food and beverage reconstitution is critical to maintaining crew health and well-being. The numerous engineering challenges as well as human factors and safety considerations during the concept, design, and prototyping are outlined in this paper.</div>
2008-01-2010: International Space Station USOS Potable Development Water Dispenser - Technical Paper expand_more Login Event International Conference On Environmental Systems Authors Laura A. Shaw NASA Lyndon B. Johnson Space Center Jose L. Barreda Jacobs Technologies Abstract Content The International Space Station (ISS) Russian Segment currently provides potable water dispensing capability for crewmember food and beverage rehydration. All ISS crewmembers rehydrate Russian and U.S. style food packages from this location. A new United States On-orbit Segment (USOS) Potable Water Dispenser (PWD) is under development.
This unit will provide additional potable water dispensing capability to support an on-orbit crew of six. The PWD is designed to provide incremental quantities of hot and ambient temperature potable water to U.S. style food packages. It will receive iodinated water from the Fuel Cell Water Bus in the U.S. Laboratory element. The unit will provide potable-quality water, including active removal of biocidal iodine prior to dispensing. A heater assembly contained within the unit will be able to supply up to 2.0 liters of hot water (65 to 93°C) every thirty minutes. This quantity will allow three to four crewmembers to rehydrate their food and beverages from this location during a single meal.
The unit is designed to remain functional for up to ten years with replacement of limited life items such as filters. It will be the size of two stacked Shuttle Middeck lockers (approximately the size of two small suitcases) and integrated into a science payload rack in the U.S. Laboratory element. Providing potable-quality water at the proper temperature for food and beverage reconstitution is critical to maintaining crew health and well-being. The numerous engineering challenges as well as human factors and safety considerations during the concept, design, and prototyping are outlined in this paper.
Meta Tags Topics Water quality Spacecraft Fuel cells Water Human factors Assembling Buses Affiliated or Co-Author NASA Lyndon B. Johnson Space Center Jacobs Technologies Details DOI https://doi.org/10.4271/2008-01-2010 Citation Shaw, L. and Barreda, J., "International Space Station USOS Potable Development Water Dispenser," International Conference On Environmental Systems, San Francisco, California, United States, June 29, 2008, https://doi.org/10.4271/2008-01-2010 . Additional Details Publisher SAE International Published 6/29/2008 Product Code 2008-01-2010 Content Type Technical Paper Language English Add to Shared Library Add to My Library
# How do astronauts brew tea on ISS and what brewing temperature is common?
Tags: iss, temperature, food
- Score: 13
- Views: 2614
- Answers: 1
- Answered: yes
- Asked by: Sergiy Lenzion (6505 rep)
- Asked: 2019-12-17
- Site: space
## Question
Do astronauts add hot water to a packet that contains a bag with real tea leaves or is it dry tea powder?
If they use real tea leaves, what would be the water temperature for the brewing?
To get the best results on Earth, it is commonly advised to brew green tea at ~75 deg C, and black tea at 90-95 deg C.
Is water at 95 deg C available on ISS, or maybe it will be too hot to cool down in a reasonable time for drinking (since there's no open liquid surface and no convection)?
So, how do they do this?
## Answers
### Answer by A. Rumlin (score: 12 [ACCEPTED])
The water temperature for restoring products, making tea and coffee is different: + 85˚ С or from + 25˚ С to + 42˚ С - depending on what the cosmonaut has on the menu. Hot water is used mainly for the preparation of drinks, first and second courses, warm - for salads and snacks. To have lunch, the cosmonaut cuts the packet along the colored line, gently fills it with the required
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Space Tea, 1981, Smithsonian’s National Air and Space Museum
Space Shuttle Columbia lifted off from Kennedy Space Center April 12, 1981, at 7 a.m. EST (12 GMT) to begin the first shuttle mission, STS-1. The primary mission objectives were to accomplish a safe ascent into orbit, check out all the systems on the space shuttle and return to Earth for a safe landing. The first flight of the reusable spacecraft successfully met all of these objectives.
This powdered tea was returned from the first Space Shuttle mission food kit. Astronauts would inject water through the port from a dispenser in the galley, shake the container to dissolve the tea crystals and squeeze the accordion-shaped container to drink the liquid. The container is compact and suited to weightlessness. The tea is typical of Shuttle-era menu choices, but the packaging has changed since the early missions, first to covered cups and then to foil pouches with straws.
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Microbial Survival in Brewed Tea - NASA Technical Reports Server (NTRS)
## NTRS
## NTRS - NASA Technical Reports Server
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Microbial Survival in Brewed TeaLoose-leaf bagged tea is a commonly requested crew food item that comprises up to 7% of samples in the spaceflight food system. Tea preferences are typically specific and vary between different crew members, and there is significant interest to provide preferred food selections for the physical and mental wellbeing of the crew. Loose leaf bagged teas are made from herbs and spices that frequently have high microbial loads which do not meet the microbiological standards outlined in NASA-STD-3001. The food industry on earth does not require standards for microbial load of loose-leaf teas, because tea is brewed in boiling (100C) water, which is assumed to reduce the number of microorganisms. However, hot water from the ISS PWD is typically dispensed at a temperature between 155F (68C) and 175F (79C), which is below the suggested temperature range for safe brewing (180F/80C – 212F/100C). In this study, a commonly requested chamomile tea bags were infected with Bacillus cereus, a pathogenic, spore forming bact
## MICROBIAL SURVIVAL IN
BREWED TEA S. G. Thornhill1, L. Papineau1, X. Wu2, G. Douglas2, C. M. Ott2 1JES Tech, Houston, TX; 2NASA JSC, Houston, TX 2024 Human Research Program Investigators’ Workshop
### Providing Loose-Leaf Tea in Spaceflight
• Loose-leaf bagged tea is a common crew request
• Up to 7% of samples in the spaceflight food system
• Physical and mental wellbeing
• Tastes are varied and specific
Starla G. Thornhill | starla.g.thornhill@nasa.gov 2024 Human Research Program Investigators’ Workshop 2
### Microbiology of Loose-Leaf Tea
• No existing FDA standard for microbial limit on dried teas in the US
• Some teas are dried in the sun—increased potential exposure to birds, bugs, etc.
• Non-homogenous mixture
http://en.people.cn/n/2015/0706/c90782-8916318-2.html
### Foodborne Illness and Tea
• Teas are considered to be generally safe because brewed tea is prepared with boiling water for 3-5 minutes (Virginia Department of Health*)
• Known Outbreaks:
• 2003, Germany – Salmonella Agona (Koch et al, 2005, Emerg Infect Dis 11(7):1124-1127)
• 2008, Serbia – Salmonella Senftenberg (Ilic et al, 2010, Emerg Infect Dis 16(5):893-895)
• 2017, United States – Salm
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