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Related Experiment Videos

Temperature and humidity control system in a lunar base.

N Izutani1, N Kobayashi, T Ogura

  • 1Mechanical Engineering Laboratory, Daikin Industries Ltd, Osaka, Japan.

Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|January 1, 1992
PubMed
Summary

Developing lunar resources requires effective temperature control. A fluorocarbon heat pump system and combined cooling methods are essential for a comfortable lunar habitat, addressing high lighting heat loads.

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Area of Science:

  • Lunar habitat engineering
  • Environmental control and life support systems (ECLSS)
  • Thermal management

Background:

  • Lunar base construction programs are advancing, necessitating resource development like helium-3.
  • Establishing a sustainable human presence on the Moon requires robust environmental control systems.
  • Previous lunar missions highlight challenges in maintaining habitable conditions.

Purpose of the Study:

  • To evaluate a temperature and humidity control system for lunar habitats.
  • To ensure human comfort and operational capability during lunar resource development.
  • To identify optimal cooling strategies for a Moon base environment.

Main Methods:

  • Conducted thermal load calculations for a lunar habitat module.

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  • Selected a fluorocarbon refrigerant heat pump system based on key performance requirements.
  • Implemented a combined forced convective and ceiling panel cooling system for occupant comfort.
  • Performed ground-based experiments to assess the efficacy of panel cooling.

    • Main Results:

    • Electric lighting constitutes 80-90% of the cooling load in the habitat module.
    • Only cooling functionality is necessary for temperature regulation.
    • Radiant heat from lighting fixtures can cause occupant discomfort.
    • The integrated cooling system effectively addresses thermal loads and comfort issues.

    Conclusions:

    • A fluorocarbon heat pump system is suitable for lunar base thermal control, meeting reliability and efficiency demands.
    • Combined forced convective and panel cooling is crucial for mitigating discomfort from lighting heat.
    • The developed system provides a viable solution for maintaining habitable conditions on the Moon.