1. What is Watts to BTU/h Conversion?

The Watts to BTU/h conversion calculates the equivalent heating or cooling power in British Thermal Units per hour from electrical power measured in Watts. This conversion is essential for comparing electrical systems with thermal systems.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( Watts \) — Electrical power input in watts
• \( 3.412 \) — Conversion factor (1 watt = 3.412 BTU/h)
• \( BTU/h \) — British Thermal Units per hour output

Explanation: This conversion factor represents the amount of heat energy equivalent to one watt of electrical power over one hour.

3. Importance of Power Conversion

Details: Accurate power conversion is crucial for HVAC system design, electrical appliance selection, energy efficiency calculations, and comparing heating/cooling capacities across different measurement systems.

4. Using the Calculator

Tips: Enter the power value in watts. The value must be positive and valid. The calculator will automatically compute the equivalent BTU per hour value.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 3.412?
A: This factor comes from the definition of BTU (the amount of heat required to raise 1 pound of water by 1°F) and the relationship between mechanical and thermal energy units.

Q2: What are common applications of this conversion?
A: HVAC system sizing, electric heater capacity calculation, air conditioner specification, and comparing electrical heating with gas heating systems.

Q3: Is this conversion exact?
A: For practical purposes, 3.412 is considered standard, though the exact conversion may vary slightly based on specific conditions and measurement standards.

Q4: Can I convert BTU/h back to watts?
A: Yes, use the inverse formula: Watts = BTU/h ÷ 3.412

Q5: What's the difference between BTU and BTU/h?
A: BTU is a unit of energy, while BTU/h is a unit of power (energy per unit time). BTU/h indicates the rate of heat transfer.