Average Domestic Demand Given Total Storage Capacity Calculator

Formula Used:

\[ D = \frac{T - \left(\frac{10}{24} \times (F - P)\right)}{a + b + \frac{10}{24}} \]

Total Storage Capacity (T):

m³/s

Fire Demand (F):

m³/s

Capacity of Pump (P):

m³/s

Numerical Coefficient a:

Numerical Coefficient b:

Average Domestic Demand (D):

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1. What is Average Domestic Demand?

Average Domestic Demand refers to the average amount of water or other resources used by households within a specific area over a certain period, usually measured in gallons per day or liters per day.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ D = \frac{T - \left(\frac{10}{24} \times (F - P)\right)}{a + b + \frac{10}{24}} \]

Where:

\( D \) — Average Domestic Demand (m³/s)
\( T \) — Total Storage Capacity (m³/s)
\( F \) — Fire Demand (m³/s)
\( P \) — Capacity of Pump (m³/s)
\( a \) — Numerical Coefficient a
\( b \) — Numerical Coefficient b

Explanation: This formula calculates the average domestic water demand by considering total storage capacity, fire demand requirements, pump capacity, and numerical coefficients that account for various system factors.

3. Importance of Average Domestic Demand Calculation

Details: Accurate calculation of average domestic demand is crucial for water system design, capacity planning, infrastructure development, and ensuring adequate water supply for residential areas while accounting for emergency requirements like fire demand.

4. Using the Calculator

Tips: Enter all values in cubic meters per second (m³/s). Numerical coefficients a and b should be positive values. Ensure that all input values are valid and non-negative.

5. Frequently Asked Questions (FAQ)

Q1: What units should be used for input values?
A: All flow values should be entered in cubic meters per second (m³/s). Numerical coefficients are dimensionless.

Q2: What is the significance of the 10/24 factor in the formula?
A: The 10/24 factor represents a time conversion that accounts for the proportion of a day (10 hours out of 24) during which certain demand conditions apply.

Q3: How is fire demand typically determined?
A: Fire demand is usually calculated based on local fire protection requirements, building codes, and the size/type of area being protected.

Q4: What factors influence numerical coefficients a and b?
A: These coefficients are determined based on local conditions, system characteristics, historical usage patterns, and specific engineering considerations.

Q5: Can this calculator be used for other fluids besides water?
A: While designed for water systems, the formula could potentially be adapted for other fluids with similar flow characteristics, though appropriate unit conversions would be necessary.