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Temperature control system for water-perfused suits

G L Brengelmann, M McKeag, L B Rowell

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |April 1, 1977
    PubMed
    Summary
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    This study presents a novel system for precise skin temperature control in humans using water-perfused garments. It achieves rapid temperature changes and stable control for advanced physiological research.

    Area of Science:

    • Physiological measurement systems
    • Thermal regulation research
    • Human subject experimentation

    Background:

    • Accurate control of skin temperature is crucial for physiological research.
    • Existing systems may lack the precision or responsiveness needed for dynamic studies.
    • Water-perfused garments offer a method for direct thermal manipulation.

    Purpose of the Study:

    • To describe a new system for precise and dynamic control of skin temperature in human subjects.
    • To detail the technical specifications and operational capabilities of the system.
    • To highlight the system's suitability for research requiring controlled thermal environments.

    Main Methods:

    • A water-perfused garment system with a low circulating thermal mass and a fast-response quartz heat lamp.

    Related Experiment Videos

  • Open-loop design allowing addition of hot/cold water from building mains for rapid temperature changes (>5°C/min).
  • Precise water temperature regulation within +/-0.1°C.

    • Main Results:

    • The system provides precise control of water temperature, essential for accurate skin temperature manipulation.
    • Achieved rapid rates of change in water temperature, enabling dynamic experimental protocols.
    • Demonstrated semiautomatic control of skin temperature within +/-1°C of target waveforms.

    Conclusions:

    • The described system offers advanced capabilities for controlling skin temperature in human subjects.
    • Its precision, responsiveness, and open-loop design make it suitable for diverse physiological and thermal regulation studies.
    • Potential hazards and safety measures have been identified and addressed.