Assertion: diver | /r/CapableOf | exhale breath
Facets:
value: to keep ice
type: PURPOSE
value: at 29
type: TEMPORAL
Source sentences:
text: By the mid twentieth century, high pressure cylinders were available and two systems for scuba had emerged: open-circuit scuba where the diver's exhaled breath is vented directly into the water, and closed-circuit scuba where the carbon dioxide is removed from the diver's exhaled breath which has oxygen added and is recirculated.
text: A diver breathes two breaths and then passes the regulator off to his buddy, who breathes two breaths and hands it back.
text: The diver’s exhaled breath at 29 to 32 °C (84 to 90 °F), does not have enough heat to compensate for the cooling effect of the expanding incoming air once the water temperature is much below 4 °C (39 °F), and once the water temperature drops below 4 °C (39 °F) there is not enough heat in the water to rewarm the regulator components fast enough to keep moisture in the divers exhaled breath from freezing if the diver is breathing hard.
text: When scuba diving in water between 7 to 10 °C (45 to 50 °F) the air arriving at the second stage can easily be in the −20 to −10 °C (−4 to 14 °F) range, whereas the surface supplied air will be at nearly the same temperature as the water, which in the worst case would be just below freezing but still warm enough for the divers exhaled breath to keep ice from forming.