1. What Is BTU Of Radiator?

BTU (British Thermal Unit) of a radiator measures the heat output capacity. It represents the amount of heat energy required to raise the temperature of one pound of water by one degree Fahrenheit, indicating the radiator's heating efficiency.

2. How Does The Calculator Work?

The calculator uses the BTU calculation formula:

Where:

• \( Surface Area \) — Total surface area of the radiator in square feet
• \( Emission Rate \) — Heat emission rate per square foot (typically 200-300 BTU/hr per ft²)

Explanation: The formula calculates total heat output by multiplying the radiator's surface area by its emission rate per unit area.

3. Importance Of BTU Calculation

Details: Accurate BTU calculation is essential for proper heating system design, ensuring adequate room heating, energy efficiency, and preventing under or over-sizing of heating equipment.

4. Using The Calculator

Tips: Enter surface area in square feet and emission rate in BTU/hr per ft². Typical emission rates range from 200-300 BTU/hr per ft² depending on radiator type and water temperature.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical emission rate for radiators?
A: Standard radiators typically emit 200-300 BTU/hr per ft², but this varies based on radiator type, water temperature, and design.

Q2: How do I measure radiator surface area?
A: Calculate surface area by measuring height and width, then multiply. For complex shapes, calculate each surface separately and sum them.

Q3: What factors affect radiator BTU output?
A: Water temperature, flow rate, radiator material, fin design, and room temperature all influence actual heat output.

Q4: How many BTUs do I need per room?
A: Typically 20-40 BTU per square foot of room area, depending on insulation, windows, climate, and room usage.

Q5: Can I use this for different radiator types?
A: Yes, but ensure you use the correct emission rate for your specific radiator type (cast iron, steel panel, convector, etc.).