METEOROLOGY – URFACE TEMPERATURE & THERMAL COMFORT CALCULATOR
Comfort Zone Ashrae
A precise tool.
What is the Comfort Zone Ashrae & How does it work?
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standard 55 provides a thermal comfort model that considers various environmental factors such as air temperature, humidity, air speed, and metabolic rate to determine the thermal comfort zone for occupants.
The standard defines a range of conditions under which most people find indoor environments comfortable. This tool uses ASHRAE 55 to evaluate if the given environmental conditions fall within this comfort zone.
The standard defines a range of conditions under which most people find indoor environments comfortable. This tool uses ASHRAE 55 to evaluate if the given environmental conditions fall within this comfort zone.
PMV = frac{1}{10} left( 3.965 + 0.028 times T_a – 4.0 times V^{0.75} – 0.348 times (T_a – T_m) – 0.021 times T_a times V^{0.75} right)
PMV = Predicted Mean Vote
Ta = Air temperature (°C)
V = Air speed (m/s)
Tm = Mean radiant temperature (°C)
Ta = Air temperature (°C)
V = Air speed (m/s)
Tm = Mean radiant temperature (°C)
Parameters
Result
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Frequently Asked Questions
What is the purpose of the Comfort Zone Ashrae calculator?
The Comfort Zone Ashrae calculator evaluates if given environmental conditions fall within the thermal comfort range defined by ASHRAE Standard 55.
Which factors does the calculator consider for determining thermal comfort?
The calculator considers air temperature, humidity, air speed, and metabolic rate to determine thermal comfort.
Who developed the thermal comfort model used in this calculator?
The thermal comfort model is based on ASHRAE Standard 55, developed by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).
Can I use this calculator for outdoor conditions as well?
This calculator is specifically designed for indoor environments. Outdoor conditions may require different models or adjustments.
How accurate is the Comfort Zone Ashrae calculator in predicting thermal comfort?
The accuracy of the calculator depends on the precision of the input data and how well it represents real-world conditions, but it provides a good general guideline for most people.
What is ASHRAE Standard 55?
ASHRAE Standard 55 is a thermal comfort model developed by ASHRAE that defines the range of environmental conditions under which most people find indoor environments comfortable.
Can I customize the metabolic rate for different activities in this calculator?
Yes, you can input different metabolic rates to account for various activities and their associated energy expenditure.
Results are for informational purposes only and do not constitute professional advice.