1. What is a Steam Boiler Size Calculator?

Definition: This calculator converts heat input rate in BTU/h to boiler power output in kilowatts (kW).

Purpose: It helps engineers and technicians properly size steam boilers for industrial, commercial, and residential applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Boiler power (kilowatts)
• \( Q_{btu} \) — Heat input rate (BTU per hour)

Explanation: The conversion factor 3412 represents the number of BTUs per hour equivalent to 1 kilowatt of power.

3. Importance of Proper Boiler Sizing

Details: Correct boiler sizing ensures efficient operation, prevents energy waste, and maintains system reliability and safety.

4. Using the Calculator

Tips: Enter the heat input rate in BTU/h. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the significance of 3412 in the formula?
A: 3412 BTU/h equals 1 kW, which is the standard conversion factor between these units of power.

Q2: How do I find my heat input rate?
A: Check boiler specifications or calculate it based on fuel consumption and heating value.

Q3: Does this account for boiler efficiency?
A: No, this gives theoretical power. For actual output, multiply by boiler efficiency (typically 80-95%).

Q4: What's a typical residential boiler size?
A: Most homes need 30-150 kW boilers, depending on size and climate.

Q5: Can I use this for hot water boilers?
A: Yes, the same conversion applies, though sizing considerations differ from steam boilers.