Calculate air temperature rise, required CFM, or sensible heat from airflow with metric conversions, adjustable air density and specific heat, and outlet temperature.
Cfm Temperature Rise Formula
The following formula is used to calculate the temperature rise for a given CFM, temperature difference, and BTU.
Variables:
- TR is the temperature rise in degrees Fahrenheit (°F)
- CFM is the cubic feet per minute
- TD is the temperature difference in degrees Fahrenheit (°F)
- BTU is the British Thermal Unit
To calculate the temperature rise, multiply the CFM by 1.08 and the temperature difference, then divide the result by the BTU.
What is CFM Temperature Rise?
CFM Temperature Rise refers to the increase in temperature of air as it passes through a heating or cooling system. It is a critical parameter in HVAC (Heating, Ventilation, and Air Conditioning) systems, as it helps in determining the efficiency and performance of the system. The temperature rise is influenced by the airflow rate (CFM), the temperature difference between the inlet and outlet air, and the energy input (BTU) to the system. Understanding and calculating the CFM temperature rise is essential for designing and optimizing HVAC systems to ensure they meet the desired heating or cooling requirements.
How to Calculate CFM Temperature Rise?
The following steps outline how to calculate the CFM Temperature Rise.
- First, determine the cubic feet per minute (CFM) of the air.
- Next, determine the temperature difference (TD) between the inlet and outlet air.
- Next, determine the energy input in BTU.
- Finally, calculate the temperature rise using the formula TR = (CFM * 1.08 * TD) / BTU.
- After inserting the values and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
CFM = 500
Temperature Difference (TD) = 30°F
BTU = 10000