Infrared light (heat energy) from the sun warms the sun-facing side of the ISS to 250° F (121° C), hotter than a raging boil. At the same time, temperatures on the shadowed side drop to -250° F (-157° C), a difference of 500° F.
The heated ammonia circulates through huge radiators located on the exterior of the Space Station, releasing the heat as infrared radiation and cooling as it flows. The Station’s outstretched radiators are made of honeycomb aluminum panels.
Spacecraft thermal system
Brrrrr! How Do Extreme Temperatures Affect Spacewalks? – ISS Science
How does the International Space Station work?
Frequently Asked Questions
How is the space station heated?
Inside the ISS, there are a lot of electronic devices that generate heat. The astronauts themselves also generate heat. A system called the Active Thermal Control System (ATCS) keeps the temperature inside the ISS comfortable for the astronauts. ... Heat collection happens through several heat exchangers around the ISS.
What is the external temperature of the ISS?
Cool is harder. The outside of the ISS can reach temperatures as high as 250 degrees F (121 C) on the sunny side and as low as -250 degrees F (-157 C) on the shady side. Inside the ISS are plenty of things that generate heat - such as human bodies, laptop computers, pumps, and other electrical devices.
How do astronauts stay warm in outer space?
"In space, it's a matter of insulation. Just as your blanket keeps your body heat in so you stay warm in bed, NASA space suits have insulation systems as well as heaters." ... NASA researchers developed this for use in astronaut glove liners. When a person's body temperature rises, the material absorbs the heat.
How many radiators does the ISS have?
The EEATCS collects heat from the Interface Heat Exchangers (IFHX) located on the U.S. Laboratory module, circulates the working fluid, anhydrous ammonia, via the Pump and Flow Control Subassembly (PFCS), and rejects heat to space via two orthogonally oriented stationary radiators.
How is the temperature on the International Space Station?
Staying Cool on the ISS. Consider, for example, the International Space Station (ISS). Without thermal controls, the temperature of the orbiting Space Station's Sun-facing side would soar to 250 degrees F (121 C), while thermometers on the dark side would plunge to minus 250 degrees F (-157 C).
What happens if there are no thermal controls on the Space Station?
Without thermal controls, the temperature of the orbiting Space Station's Sun-facing side would soar to 250 degrees F (121 C), while thermometers on the dark side would plunge to minus 250 degrees F (-157 C). There might be a comfortable spot somewhere in the middle of the Station, but searching for it wouldn't be much fun!
Why are there heat exchangers on the Space Station?
This is just what happens on the Space Station. Energy from the solar arrays flows into the ISS to run avionics, electronics ... all of the Station's many systems. They all produce heat, and something has to be done to get rid of the excess. The basic answer is to install heat exchangers.
What kind of insulation is on the International Space Station?
As a result, insulation for the International Space Station doesn't look like the fluffy mat of pink fibers you often find in Earth homes. The Station's insulation is instead a highly-reflective blanket called Multi-Layer Insulation (or MLI) made of Mylar and dacron.