Air temperature and relative humidity

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SUMMARY

In sauna environments, individuals can tolerate air temperatures exceeding 90° C (194° F) with a relative humidity of approximately 10%, while exposure to liquid water at the same temperature results in severe burns within one minute. The primary reasons for this difference in heat tolerance are the lower thermal conductivity of air compared to water and the body's ability to cool itself through sweating in a sauna. This discussion highlights the physiological responses to varying heat sources and the importance of humidity levels in thermal comfort.

PREREQUISITES
  • Understanding of thermal conductivity and its impact on heat transfer
  • Basic knowledge of human physiology, particularly thermoregulation
  • Familiarity with sauna environments and their typical temperature and humidity settings
  • Awareness of the effects of high temperatures on human skin and tissues
NEXT STEPS
  • Research the principles of thermal conductivity in different materials
  • Study human thermoregulation mechanisms and the role of sweating
  • Explore the effects of humidity on perceived temperature and comfort levels
  • Investigate safety guidelines for sauna use and high-temperature exposure
USEFUL FOR

This discussion is beneficial for health professionals, sauna enthusiasts, and individuals interested in understanding the effects of temperature and humidity on human comfort and safety.

salma17
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In sauna rooms, people spend time in conditions of air temperature over 90° C (194° F) with a relative humidity near 10%. However, if you stick your arm into liquid water that is at a temperature of 90° C (194° F), you will be severely burned in less than one minute. Give two reasons why people are able to spend time in a sauna, but are severely burned in water at the same temperature.

I have no idea why this is! Help?
 
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Which has more heat? A sauna with a relative humidity of 10% or a bucket of water, both at the same temperature, 90 C?
 
You can cool yourself in a sauna by sweating. If you were wearing a coat in a sauna you would probably over heat and die.
 

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