Gas Pipe Sizing Calculator
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The Gas Pipe Sizing Calculator is an extremely easy to use app that will help you to select the right size pipe for a domestic installation using copper (BS EN 1057) and steel (BS 7838) pipes of 8, 10, 12, 15, 22, 28 and 35mm. It will calculate the right pipe diameter for sections up to 30m (98ft) in length.
To carry out a calculation simply enter the appliance heat input, enter the pipe length, the number of elbows, tees and bends and then press the 'Calculate' button. The results will show the total equivalent length, the minimum pipe diameter that should be used and the pressure drop for that section of pipe.
For multiple appliances each section should be calculated in turn and the kW inputs for the appliances in each section added together for each calculation.
The maximum pressure drop from each appliance to the meter should be no more than 1 mbar. Adding all drops together using the minimum pipe diameters may cause this to be exceeded. Where possible, the results will also calculate the drop if the next larger size pipe diameter is selected on a section, this should help to ensure the right sizes are used throughout the whole circuit.
The calorific value of natural gas in your area can be saved in the Settings page to improve the accuracy of the results.
***Mr Combi Training would love your feedback on this app and suggestions for other apps that Heating Engineers would find useful. Please contact us at email@example.com
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v1.1 - Heat input can now be entered in MJ/h and BTU/h
v1.2 - Gas rate added to result screen