The determination of the inner and outer diameter of the floor heating pipe is usually based on a number of factors, including the heating area, flow rate, velocity, specific friction, pipe roughness, the density of the fluid in the pipe, the length of the pipe section and the local resistance coefficient. Here are some specific ways to determine:
Based on the heating area
The heating area is an important factor to determine the diameter size of the floor heating pipe. In the case of PE-Xa floor heating pipes, the general pipe diameter size is at least 16 mm, and the pipe diameter can be increased by 0.5 mm for each additional room area.
Based on flow
Flow rate is another important factor affecting pipe diameter. The larger the flow rate, the larger the pipe diameter size should be. The diameter of the floor heating pipe can be determined by calculating the water supply and return of the floor heating.
Calculated according to the principle of fluid mechanics
Flow rate method: According to the design flow rate of the pipe section, the allowable flow rate of the pipe section and the density of the fluid in the pipe, the design diameter of the pipe section can be obtained.
Flow rate, specific friction method: considering the design flow rate of the pipe segment, the specific friction resistance of the pipe segment, the roughness of the pipe and the density of the fluid in the pipe, the design diameter of the pipe segment can be calculated.
Flow rate, specific friction method: Based on the allowable flow rate of the pipe section, the specific friction of the pipe section, the pipe roughness and the density of the fluid in the pipe, the design diameter of the pipe section can be calculated.
Flow rate, total pressure loss method: This method is more complicated, but it combines the allowable flow rate of the pipe section, the total pressure loss of the pipe section, the pipe roughness, the density of the fluid in the pipe section, the length of the pipe section and the local resistance coefficient of the pipe section to find the design pipe diameter of the pipe section.
Water distributor and main bore
The caliber of the general water distributor is DN25 (one inch), and the caliber of the supervisor is usually consistent with the water distributor. In addition, the caliber of the floor heating pipe also has DN25 and DN32 specifications, which mainly depends on the selected equipment and the specific needs of the floor heating system.
Please note that the above method is for reference only. When selecting the inner diameter and outer diameter of the floor heating pipe, you should consult a professional engineer or the supplier of the floor heating system to ensure that the selected specifications meet the actual requirements and installation environment.zurn pex pipe