Liquid Cooling and Ventilation Garment in the context of Convection cooling


Liquid Cooling and Ventilation Garment in the context of Convection cooling

⭐ Core Definition: Liquid Cooling and Ventilation Garment

A liquid cooling garment (LCG) is a form-fitting garment that is used to remove body heat from the wearer. It is commonly used in environments where evaporative cooling from sweating and open-air convection cooling does not work or is insufficient, or when the wearer has a biological problem that hinders self-regulation of body temperature.

A liquid cooling and ventilation garment (LCVG) has additional crush-resistant ventilation ducts, which draw moist air from the wearer's extremities, keeping the wearer dry. In a fully enclosing suit where exhaled breathing air can enter the suit, the exhaled air is moist and can lead to an uncomfortable feeling of dampness.

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Liquid Cooling and Ventilation Garment in the context of Portable life support system

A primary (or portable or personal) life support system (or subsystem) (PLSS), is a device connected to an astronaut or cosmonaut's spacesuit, which allows extra-vehicular activity (EVA) with maximum freedom, independent of a spacecraft's life support system. A PLSS is generally worn like a backpack. The functions performed by the PLSS include:

  • Regulating suit pressure
  • Providing breathable oxygen
  • Removing carbon dioxide, humidity, odors, and contaminants from breathing oxygen
  • Cooling and recirculating oxygen through the pressure garment, and water through a Liquid Cooling and Ventilation Garment or Liquid Cooling Garment.
  • Two-way voice communication
  • Display or telemetry of suit health parameters
  • Telemetry of an indicator of the wearer's immediate health (e.g. heart rate)

The air handling function of a PLSS is similar to that of a diving rebreather, in that exhaled gases are recycled into the breathing gas in a closed loop.

View the full Wikipedia page for Portable life support system
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