1996-07-01

Fitting and Coolant Line Insulation Design for International Space Station 961354

International Space Station (ISS) will provide Low Temperature (LT), and Moderate Temperature (MT) Internal Thermal Control System (ITCS) coolant to payloads and other users. LT ITCS delivers 38° to 42° F coolant MT ITCS delivers 62° to 65° F coolant.
By using LT ITCS cabin air, dew point is controlled by the Thermal and Humidity Control (THC) subsystem to be 49° to 55° F when manned. Since the dew point temperature is above the LT ITCS nominal temperature, any components that have this coolant in them can be expected to condense moisture on their surfaces. The components that are affected are many. This paper, however, is concerned only with the lines and Quick Disconnects (QDs) that are a part of the total ITCS system.

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