1. What is an Oil Boiler BTU Calculator?

Definition: This calculator determines the heat output (BTU) of an oil boiler based on fuel consumption rate and calorific value.

Purpose: It helps HVAC professionals and homeowners estimate boiler efficiency and heating capacity.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BTU \) — British Thermal Units per hour (BTU/h)
• \( \text{Oil Flow} \) — Fuel consumption rate (gallons/hour)
• \( \text{CV} \) — Calorific Value of the fuel (BTU/gallon)

Explanation: The oil flow rate multiplied by the energy content of the fuel gives the total heat output.

3. Importance of BTU Calculation

Details: Accurate BTU calculation ensures proper boiler sizing, energy efficiency assessment, and fuel consumption monitoring.

4. Using the Calculator

Tips: Enter the oil flow rate in gallons/hour and calorific value (default 138,500 BTU/gal for #2 fuel oil). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is calorific value?
A: The energy content per unit of fuel, typically 138,500 BTU/gal for #2 heating oil.

Q2: How do I measure oil flow rate?
A: Check boiler specifications or measure fuel consumption over time during operation.

Q3: What's a typical residential boiler BTU output?
A: Most residential oil boilers range from 80,000 to 150,000 BTU/h.

Q4: Does this account for boiler efficiency?
A: No, this is gross output. For net output, multiply by boiler efficiency (typically 80-90%).

Q5: Can I use this for other fuels?
A: Yes, with the appropriate CV (e.g., kerosene ~135,000 BTU/gal, diesel ~139,000 BTU/gal).