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  2. ASHRAE 55 - Wikipedia

    en.wikipedia.org/wiki/ASHRAE_55

    Metabolic rate is the rate of transformation of chemical energy into heat and mechanical work by metabolic activities of an individual, per unit of skin surface area (expressed in units of met) equal to 58.2 W/m 2 (18.4 Btu/h·ft 2), which is the energy produced per unit skin surface area of an average person seated at rest.

  3. Dew point - Wikipedia

    en.wikipedia.org/wiki/Dew_point

    It will also dry out the airways. The US Occupational Safety and Health Administration recommends indoor air be maintained at 20–24.5 °C (68–76 °F) with a 20–60% relative humidity, [13] equivalent to a dew point of approximately 4.0 to 16.5 °C (39 to 62 °F) (by Simple Rule calculation below).

  4. AOL reviewed: This smart humidifier helps me sleep better in ...

    www.aol.com/lifestyle/levoit-dual-200s-smart...

    The Levoit Duual 200S Smart Humidifier is a compact and reasonably priced mister that can help maintain comfortable humidity levels in your home.

  5. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    The World Health Organization (WHO) sets the ideal indoor radon levels at 100 Bq/m-3. [97] In the United States, it is recommend to fix homes with radon levels at or above 4 pCi/L. At the same time it is also recommends that people think about fixing their homes for radon levels between 2 pCi/L and 4 pCi/L. [ 98 ] In the United Kingdom the ...

  6. Thermal comfort - Wikipedia

    en.wikipedia.org/wiki/Thermal_comfort

    The recommended level of indoor humidity is in the range of 30–60% in air conditioned buildings, [34] [35] but new standards such as the adaptive model allow lower and higher humidity, depending on the other factors involved in thermal comfort. Recently, the effects of low relative humidity and high air velocity were tested on humans after ...

  7. Humidity - Wikipedia

    en.wikipedia.org/wiki/Humidity

    Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. [2] Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on the temperature and pressure of the system of interest.

  8. Room temperature - Wikipedia

    en.wikipedia.org/wiki/Room_temperature

    The World Health Organization in 1987 found that comfortable indoor temperatures of 18–24 °C (64–75 °F) were not associated with health risks for healthy adults with appropriate clothing, humidity, and other factors. For infants, elderly, and those with significant health problems, a minimum of 20 °C (68 °F) was recommended.

  9. The ultimate guide to computer health: How to ensure ... - AOL

    www.aol.com/lifestyle/the-ultimate-guide-to...

    You can complete a basic PC health check in about 30 minutes, but a more thorough analysis could take up to an hour or longer, depending on your computer's specifications and what you find.