Stalin Posted May 22, 2020 Report Share Posted May 22, 2020 I would like to know if the data generated by the Ventsim program are validated. What design standards does the program adopt? Quote Link to comment Share on other sites More sharing options...
Martin Griffith Posted May 26, 2020 Report Share Posted May 26, 2020 Hi, The Ventsim simulation code is based predominantly on the work in McPherson's Subsurface Ventilation Engineering book available here: https://www.mvsengineering.com/index.php/downloads/publications There are many examples there against which Ventsim can be tested. If you have a specific query about any aspect of Ventsim, please don't hesitate to ask. Quote Link to comment Share on other sites More sharing options...
Stalin Posted May 28, 2020 Author Report Share Posted May 28, 2020 Thanks for your response. How do I get the calculation memory for the power of the main exhaust fans? I need to present this in an audit. Quote Link to comment Share on other sites More sharing options...
Martin Griffith Posted May 29, 2020 Report Share Posted May 29, 2020 The power of the fans is calculated according to standard Fan Laws. A good summary of Fan Laws and Theory can be found here: https://www.mvsengineering.com/files/Subsurface-Book/MVS-SVE_Chapter10.pdf In Ventsim, the power of the fan is calculated firstly by working out the fluid power of the fan, which is the quantity multiplied by the pressure. Then the shaft power is worked out. How this is done depends on what information you have added for the fan. If you have defined a power curve as part of your fan, then the shaft power is calculated from this curve; if you have no power curve, but have an efficiency curve, then this is used instead. If no power or efficiency curve is included, then fan default efficiency from the settings is used. The shaft power and the electrical power are reported in the Fan Info box on the Fan Tab of the Edit Box. Quote Link to comment Share on other sites More sharing options...
Stalin Posted May 29, 2020 Author Report Share Posted May 29, 2020 Thanks for the answer. To calculate the power of the fans, I fixed the flow at the air exits (exhaust fans) of the mine. Then I simulate the pressure loss (Pressure Collar TP) on these exits. With these values (flow and pressure loss = Pressure Collar TP), I select the fans. I would like to know how to obtain the calculation report for the pressure loss (Pressure Collar TP) calculated. Does the Ventsim program generate this type of report? Quote Link to comment Share on other sites More sharing options...
Martin Griffith Posted June 2, 2020 Report Share Posted June 2, 2020 After you have run your simulation, press Escape to clear your airway selection, then go to Run | Summary. In this form, you have several tabs which will give you a summary of the model. If you want to summarise just a portion of the mine, then you can select airways before running the Summary. You might also find the Tools | Spreadsheet function valuable for summarising or collating data from across the model. A good explanation of the Spreadsheet function can be found here: Quote Link to comment Share on other sites More sharing options...
Stalin Posted June 2, 2020 Author Report Share Posted June 2, 2020 Thank you very much! Quote Link to comment Share on other sites More sharing options...
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