1. What is a Radiator Output Calculator?

Definition: This calculator estimates the heat output of radiators for UK standards based on dimensions and temperature difference.

Purpose: It helps heating engineers and homeowners determine the appropriate radiator size for rooms.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Output \) — Heat output in watts
• \( Length \) — Radiator length in meters
• \( Width \) — Radiator width in meters
• \( Height\ Factor \) — Adjustment for radiator height (typically 1.0)
• \( \Delta T \) — Temperature difference between radiator and room (°C)

Explanation: The calculation follows UK standards where 100W/m² is typical for ΔT 50°C.

3. Importance of Radiator Output Calculation

Details: Proper sizing ensures efficient heating, energy savings, and comfortable room temperatures.

4. Using the Calculator

Tips: Enter radiator dimensions in meters, height factor (default 1.0), and ΔT (default 50°C). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is Delta T (ΔT)?
A: The temperature difference between radiator surface and desired room temperature (typically 50°C in UK).

Q2: When would I change the height factor?
A: For taller radiators (over 600mm) use 1.1-1.2, for shorter (under 400mm) use 0.8-0.9.

Q3: What's the 100 multiplier in the formula?
A: This converts the result to watts based on UK standard radiator performance (100W per m² at ΔT 50°C).

Q4: How accurate is this calculation?
A: It provides a good estimate but actual output varies by radiator type (panel, convector, etc.).

Q5: Should I add any safety margin?
A: Yes, consider adding 10-15% to account for heat loss through windows and external walls.