1. What is Boiler Horsepower?

Definition: Boiler horsepower (BHP) is a measure of a boiler's capacity to deliver steam to a steam engine.

Purpose: This calculator converts steam output in pounds per hour (lb/hr) to boiler horsepower, which helps in sizing and comparing boilers.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BHP \) — Boiler horsepower
• \( W_s \) — Steam output (pounds per hour)

Explanation: One boiler horsepower is defined as the ability to evaporate 34.5 pounds of water per hour at 212°F.

3. Importance of Boiler Horsepower Calculation

Details: Proper boiler sizing ensures efficient operation, meets steam demand, and prevents overloading or underutilization of equipment.

4. Using the Calculator

Tips: Enter the steam output in pounds per hour. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 34.5 lb/hr equals 1 BHP?
A: This is the historical standard based on the original definition of boiler horsepower from the 19th century.

Q2: How does BHP differ from mechanical horsepower?
A: BHP measures boiler capacity, while mechanical horsepower measures work output. They are different units with different definitions.

Q3: What's a typical BHP rating for industrial boilers?
A: Commercial boilers typically range from 20-100 BHP, while industrial boilers can be several hundred BHP.

Q4: Can I convert BHP back to lb/hr?
A: Yes, simply multiply BHP by 34.5 to get steam output in lb/hr.

Q5: Does this calculation account for steam pressure?
A: No, this is a basic conversion. Actual boiler capacity may vary with operating pressure and temperature.