1. What is Watts to BTU Conversion?

The conversion between watts and BTU per hour is used to translate electrical power (watts) to thermal energy output (BTU/hr). This is particularly useful in heating and cooling applications.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( Q \) — Thermal energy in BTU per hour
• \( W \) — Electrical power in watts
• \( 3.412142 \) — Conversion factor (1 watt = 3.412142 BTU/hr)

Explanation: The conversion factor comes from the relationship between the watt (SI unit) and the British Thermal Unit (imperial unit).

3. Importance of Power Conversion

Details: This conversion is essential when comparing electrical heating systems with fuel-based systems, or when sizing HVAC equipment.

4. Using the Calculator

Tips: Enter power in watts (must be positive number). The result will show the equivalent thermal energy output in BTU per hour.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 3.412142?
A: This comes from the definition of BTU (amount of energy to raise 1 pound of water by 1°F) and the watt (1 joule per second).

Q2: Is this conversion exact?
A: Yes, it's based on defined units, not empirical measurements.

Q3: Can I convert BTU/hr back to watts?
A: Yes, divide BTU/hr by 3.412142 to get watts.

Q4: Does this account for efficiency?
A: No, this is a direct unit conversion. Actual thermal output depends on device efficiency.

Q5: What's a typical conversion example?
A: A 1500W electric heater produces about 5,118 BTU/hr (1500 × 3.412142).