Enter the flow rate and temperature difference into the calculator to determine the chilled water Btu, or enter the chilled water Btu and one other value to find the missing variable.
Chilled Water Btu Formula
The following formula is used to calculate the chilled water Btu for a given flow rate and temperature difference.
Btu = Q * ΔT * 500
Variables:
- Btu is the chilled water Btu
- Q is the flow rate in gallons per minute (gpm)
- ΔT is the temperature difference in degrees Fahrenheit (°F)
To calculate the chilled water Btu, multiply the flow rate by the temperature difference and then multiply the result by 500.
What is Chilled Water Btu?
Chilled water Btu (British Thermal Units) is a measure of the energy required to cool water in a chilled water system. This energy is typically used in HVAC (Heating, Ventilation, and Air Conditioning) systems to provide cooling for buildings. The chilled water absorbs heat from the building and is then circulated back to a chiller where the heat is removed, and the cycle repeats. The Btu value helps in determining the efficiency and capacity of the cooling system.
How to Calculate Chilled Water Btu?
The following steps outline how to calculate the Chilled Water Btu.
- First, determine the flow rate (Q) in gallons per minute.
- Next, measure the temperature difference (ΔT) in degrees Fahrenheit.
- Finally, calculate the chilled water Btu using the formula Btu = Q * ΔT * 500.
- 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.
Flow Rate (Q) = 10 gallons per minute
Temperature Difference (ΔT) = 15 °F