Dry Bulb Temperature:
Where:
\( T_d \) = Dry bulb temperature (°C)
\( T \) = Air temperature (°C)
From: | To: |
Dry bulb temperature (Td) is the temperature of air measured by a thermometer freely exposed to the air but shielded from radiation and moisture. It is the standard air temperature reported in weather observations.
The calculator uses the simple relationship:
Where:
Explanation: The dry bulb temperature is equal to the ambient air temperature when measured properly with a shielded thermometer.
Details: Dry bulb temperature is fundamental in meteorology, HVAC design, and thermal comfort calculations. It's one of the basic measurements needed to determine other psychrometric properties like relative humidity and heat index.
Tips: Simply enter the air temperature in degrees Celsius. The calculator will output the dry bulb temperature, which is equal to the input temperature when measured correctly.
Q1: What's the difference between dry bulb and wet bulb temperature?
A: Dry bulb measures air temperature alone, while wet bulb temperature measures the lowest temperature air can reach by evaporative cooling.
Q2: How is dry bulb temperature measured?
A: With a standard thermometer shielded from radiation and moisture, placed in an environment with good air circulation.
Q3: Why is it called "dry bulb"?
A: To distinguish it from "wet bulb" temperature which uses a thermometer with a moistened wick.
Q4: What instruments measure dry bulb temperature?
A: Standard thermometers, digital temperature sensors, and psychrometers all measure dry bulb temperature.
Q5: How does dry bulb temperature affect human comfort?
A: It's a primary factor in thermal comfort, though humidity (wet bulb temperature) and air movement also play important roles.