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Commercial Water Heater Sizing Formula:
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Commercial water heater sizing involves calculating the appropriate tank capacity based on peak hot water demand. Proper sizing ensures adequate hot water supply while optimizing energy efficiency and equipment costs.
The calculator uses the commercial water heater sizing formula:
Where:
Explanation: The factor accounts for recovery time and ensures sufficient hot water supply during peak usage periods.
Details: Correct sizing prevents issues like inadequate hot water supply, excessive energy consumption, premature equipment failure, and unnecessary capital expenditure.
Tips: Enter peak hot water demand in gallons per hour (gph) and select an appropriate factor between 5-10 based on your specific requirements and usage patterns.
Q1: What is peak demand in commercial settings?
A: Peak demand refers to the maximum amount of hot water required during the busiest hour of operation, typically during morning openings or peak business hours.
Q2: How do I determine the right factor (5-10)?
A: Lower factors (5-7) suit applications with steady usage, while higher factors (8-10) are for operations with intense, concentrated hot water demands.
Q3: What factors affect water heater sizing?
A: Key factors include building type, number of occupants, fixture types, operating hours, and simultaneous usage patterns.
Q4: Should I consider recovery rate?
A: Yes, recovery rate is crucial. This calculator incorporates recovery considerations through the factor selection.
Q5: Are there other sizing methods?
A: Yes, other methods include fixture unit counting and first-hour rating calculations, but this peak demand method is widely used for commercial applications.