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What Size Of Radiator Calculator

Radiator Sizing Formula:

\[ \text{Size (BTU/hr)} = \text{Room Volume (ft³)} \times \Delta T (\text{°F}) \times \text{Factor (BTU/ft³·°F)} \]

ft³
°F
BTU/ft³·°F

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1. What Is Radiator Sizing?

Radiator sizing involves calculating the appropriate heating capacity required to maintain comfortable temperatures in a room. Proper sizing ensures efficient heating while avoiding energy waste.

2. How Does The Calculator Work?

The calculator uses the radiator sizing formula:

\[ \text{Size (BTU/hr)} = \text{Room Volume (ft³)} \times \Delta T (\text{°F}) \times \text{Factor (BTU/ft³·°F)} \]

Where:

Explanation: The formula calculates the heat output needed to overcome heat loss through walls, windows, and ventilation.

3. Importance Of Proper Radiator Sizing

Details: Correct radiator sizing ensures optimal comfort, energy efficiency, and prevents issues like underheating or excessive energy consumption.

4. Using The Calculator

Tips: Enter room volume in cubic feet, temperature difference in °F, and appropriate heat loss factor. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate room volume?
A: Multiply room length × width × height in feet to get cubic feet.

Q2: What is a typical heat loss factor?
A: Factors range from 0.02 (well-insulated) to 0.06 (poorly insulated) BTU/ft³·°F.

Q3: How do I determine ΔT?
A: Subtract your local winter design temperature from your desired indoor temperature.

Q4: What if my room has many windows?
A: Increase the heat loss factor or add additional BTU requirements for windows.

Q5: Should I add a safety margin?
A: Yes, typically add 10-20% to the calculated size for optimal performance.

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