Boiler Flow Rate Calculator
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The Boiler Flow Rate Calculator is designed to estimate the required flow rate of water in a heating system based on the heat output and temperature difference. The flow rate is important to ensure efficient heat transfer and boiler performance.
Formula for Flow Rate Calculation
The flow rate in liters per second (L/s) is calculated using the following formula:
\[ \text{Flow Rate (L/s)} = \frac{\text{Heat Output (kW)}}{4.2 \times \text{Temperature Difference (°C)}} \]
Here, 4.2 is a constant representing the specific heat capacity of water in kJ/kg°C.
Example Calculation
For a system with a heat output of 30 kW and a temperature difference of 20°C:
\[ \text{Flow Rate} = \frac{30}{4.2 \times 20} \approx 0.357 \text{ L/s} \]
Importance and Application
Accurately calculating the flow rate is crucial for designing and maintaining efficient heating systems. It ensures that the water circulates at the optimal rate to achieve desired heating levels without overloading the boiler.
Common FAQs

What is flow rate?
 Flow rate measures how much water passes through a system over a given time. It's typically measured in liters per second (L/s).

Why is temperature difference important?
 The temperature difference represents the drop in temperature of water as it releases heat. It helps determine how much water flow is needed to deliver the required heat.

Can I use this calculator for different heating systems?
 Yes, this formula applies to most standard waterbased heating systems, including radiators and underfloor heating.