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**Calculation of Pipe Diameter** is performed based on two criteria - allowable flow rate and allowable pressure drop per meter of pipe.

The criterion for selecting the pipe diameter based on allowable pressure losses is economical and involves determining the balance between capital and operating costs. An increase in pipe diameter increases its cost, while pumping water through a smaller diameter pipe requires more energy to power the pump.

For technical and economic substantiation of the choice of pipe diameter, a graph is constructed that shows the relationship between capital and operating costs and the diameter of the pipeline. The optimal diameter of the pipe is determined at the intersection point of the capital cost and operating cost curves.

The flow rate in pipes is limited by the hygienic norms of the allowable level of equivalent noise dB. The maximum allowable velocities of water in heating system pipelines depend on pipe diameter and range from 0.8 to 1.5 m/s, while in water supply system pipelines they are limited to 3 m/s.

When the calculation of **heating and water supply** systems, the pipe size is chosen based on the value of specific pressure losses of 100 Pa/m. This program will calculate the necessary pipe diameter, ensuring that the specific pressure losses do not exceed 100 Pa/m.

Online Calculations

Calculation of pipe diameter by flow

Pipe span calculation

Calculation of pressure loss in pipe

Calculation of variations in pipe length

Calculation of heat loss from pipes

Calculation of heat losses from heating network pipes

Calculation of the U-shaped compensator

Calculation of the L-shaped compensator

Calculation of the Z-shaped compensator

Calculation of the Axial compensator

Collector diameter calculation

Calculation of the temperature of a mix of flows

Temperature curve of the heating system

Calculation of the throttle diaphragm

Heating cost calculator

Data verification heat meter

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