This tool selects the smallest pipe diameter for the water flow rate you enter, which meets both the speed and pressure loss limits per meter . It can be used for heating, cooling, boiler feed and process water lines. The result table also shows the velocity and loss values of the neighboring diameters.
Recommended values
- Heating/cooling distribution lines: 0.5–1.5 m/s, 100–150 Pa/m
- Boiler room main headers: 1–2 m/s
- Pump suction lines: 0.5–1 m/s (to prevent cavitation)
Example
For an EN 10255 pipe with a limit of 1.5 m/s and 150 Pa/m for 25 m³/h of water at 70 °C, the choice is DN100 (0.80 m/s, 55 Pa/m). For 100 m³/h, DN150 is selected for a DIN 2448 pipe (1.39 m/s, 96 Pa/m).
Use the thermal power and flow tool to find the required flow from the thermal power. You can consult Çiftel Kazan engineers for your boiler room and installation project.