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BTU Equation:
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The BTU Radiator Calculator estimates the heat output required for a room based on temperature differentials and surface area. It uses the standard UK formula to determine the appropriate radiator size for optimal heating efficiency.
The calculator uses the BTU equation:
Where:
Explanation: The equation calculates the heat transfer rate based on the temperature difference between the radiator water and the room, multiplied by the radiator's surface area and a standard conversion factor.
Details: Accurate BTU calculation ensures proper radiator sizing, optimal heating efficiency, energy savings, and comfortable room temperatures. Undersized radiators won't heat the room adequately, while oversized ones waste energy.
Tips: Enter mean water temperature in °C (average of flow and return temperatures), desired room temperature in °C, and radiator surface area in m². All values must be positive numbers for accurate calculation.
Q1: What is BTU and why is it important?
A: BTU (British Thermal Unit) measures heat output. It's crucial for selecting the right radiator size to efficiently heat your space.
Q2: How do I measure radiator surface area?
A: Surface area is typically provided by manufacturers. For standard panels, it's calculated as height × width × number of panels.
Q3: What is the typical mean water temperature?
A: For conventional boilers, mean water temp is usually 70-75°C. For heat pumps, it's typically 35-55°C depending on the system.
Q4: Can I use this for underfloor heating?
A: This calculator is designed for radiators. Underfloor heating requires different calculations due to lower operating temperatures and larger surface areas.
Q5: What room temperature should I aim for?
A: Typical comfortable room temperatures are 18-21°C for living areas and 16-18°C for bedrooms, but this can vary based on personal preference.