The air regenerators scrubbed out the carbon dioxide and refreshed the breathable air inside the boat.

"I thought the air regenerators refreshed the inside atmosphere indefinitely," said Giordino in surprise.

His life-support systems and air regenerators were exhausted.

Then she worked on the air regenerator, picking at the insides with tools from a belt pouch.

That meant the power failure was so great that the air regenerators, themselves, were dead.

Lake spoke, his tone grim and bitter: "There is no power for the air regenerators and within twenty hours we will start smothering to death.

He would be provided with power for the air regenerators by the solar power units but not power sufficient to operate the shuttle.

The cooling equipment for the oxygen supply and the air regenerator couldn't keep up.

The air regenerator consumed 2000 watts and the cooling system gobbled up another 3000 watts every hour.

Within a minute the CO2 content in the closed cylinder went up and an air regenerator at the bottom hummed into life.