Home
Back
Hot Water Demand Formula:
| From: | To: |
Hot water demand calculation estimates the daily hot water requirements based on the number of persons and their individual usage patterns. This calculation is essential for proper sizing of water heating systems and ensuring adequate hot water supply.
The calculator uses the hot water demand formula:
Where:
Explanation: The equation calculates total hot water demand by multiplying the number of persons with their individual consumption plus any additional adjustment factor.
Details: Accurate hot water demand calculation is crucial for proper sizing of water heaters, energy efficiency planning, and ensuring adequate hot water supply for residential and commercial buildings.
Tips: Enter the number of persons, hot water consumption per person in liters per day, and any additional adjustment factor. All values must be valid (persons > 0, hot water per person ≥ 0).
Q1: What is a typical hot water consumption per person?
A: Typical consumption ranges from 40-80 liters per person per day, depending on usage habits and appliances.
Q2: What does the adjustment factor represent?
A: The adjustment factor accounts for additional hot water needs such as guest usage, special appliances, or safety margins.
Q3: How does this calculation help in system sizing?
A: It helps determine the appropriate capacity of water heaters and storage tanks to meet daily demand requirements.
Q4: Are there seasonal variations in hot water demand?
A: Yes, hot water demand typically increases in colder months and may vary based on climate and usage patterns.
Q5: Should this calculation consider peak usage times?
A: For comprehensive system design, both daily demand and peak hourly demand should be considered.