Mining Ventilation Software | Ohio Automation Inc.

	Ohio Automation, Inc.
	Mining Ventilation Software and More
	Engineering Software since 1985

		ICAMPS - Integrated Computer Aided Mine Planning Software
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		ICAMPS MineVent and MineVent 3D Mining Ventilation Software Analysis and Simulation
		The ICAMPS MineVent and MineVent 3D are mining ventilation software modules using expanded versions of the Hardy Cross Method for calculations. It also has a more robust second calculation engine called the Gradient Method. As-mined and projected timing maps serve as the basis for drawing to-scale mine ventilation schematic diagrams. Using AutoCAD snap features the planner designates nodes in the ventilation network. Except for the atmospheric nodes, each node must be assigned a unique number. The system prevents duplicate node numbers. The user connects the nodes with polylines which represent the actual branch airway path. The branch must have a start node and end node but you can have dummy nodes in between so that the actual branch path is used and the branch length can be calculated for use in the resistance formulas (see figure below). The branch length can also be typed in manually when calculating resistances. Each branch polyline has an associated attribute block that contains airway properties. Since the ventilation schematic is drawn to scale, the system can automatically compute the branch length and use the airway characteristics to calculate the branch resistance. The system has many features to simplify editing schematics and enhancing the ventilation diagram. All changes to a schematic drawing are stored permanently.

		Special Features that may be unique to MineVent
		Runs inside of AutoCAD so you have the full power of AutoCAD and can work off the mine map or xref Utilizes AutoCAD Layers for branch/airway colors and line types as well as turning off any layer in the map. Allows for a tolerance or correction factor so you have some idea how accurate the results are. For example 100 cfm, 10 cfm, 1 cfm etc.. Calculate Resistance 10 different formulas. With special formulas and treatment of Leakage Branches (Stoppings Formula) and Regulators. Modify Branches one by one or with List Branches, Advanced List Branches or in a spreadsheet. Resistance formulas for Non-EQ in Parallel, Pressure and Quantity for one branch, the option to read from a survey file Pressure and Quantity formula. Leakage branches which can be treated different with the Stoppings Resistance formula Special formulas for Regulators and calculating the Regulator opening. Also simple Limit Quantity branches Does not require a node/junction everywhere the airway bends Gradient Method which gives you a second calculation engine which is more efficient and robust as it always converges on a solution unless there is something syntactically wrong with the network. Export and import general MineVent data. Import from some other program to save you time. Multiple Seams in 2D. Can use contour for the top of the ground Node Manipulation easier with the List Unused nodes and Available Node Numbers. Useful to make the node numbers meaningful Erasing Multiple Branches by drawing a polygon around they ones you want to get rid of Move/Stretch branches to lengthen or shorten a selection around a closed polygon. List Branches which allows for showing, editing, viewing and printing of branches by many filters (Type, Code, Kfactor, Resistance Formula) Configure Branches which allows to set up layers for branch colors, linetypes, resistance data defaults all by code. Coloring BYLAYER allows you to change the colors of all the branches in a drawing based on the code. There are 12 branch codes available. Almost all List features allow you to Edit/Modify the branches in the list (List Pressure, List Quantity etc..) Tabulate the Quantities by code after the simulation is run. Globally Change Resistance in the whole mine or by selection using 10 formulas. Globally change the KFactors Draw Quan/Pressure can set the decimal precision. You can move the numbers around using AutoCAD or Edit Schematic. List Compare Quantities. For example you may want to see what the affect is of changing some fan, branch resistance, regulator etc... This will color up the drawing with your selection of polyline width and the percent change you want to see. Compare Quantity (cfm), Pressure Drop or Air HP. Also tells the ventilation cost of the change. Display Mesh Correction to show how the Hardy Cross meshes converged for the correction factor Change the sizes of the nodes, attribute blocks, pressures and quantities as well as saving the fan and cfg file information with the drawing Color By allows you to also set a polyline width and color by quantity, resistance, NVP, code and more. Merging Networks, in case two users want to work on different parts of the map then combine. Likely other uses. Ohio Automation is very responsive to request for new features/enhancements/improvements


		Define Branches lets you easily select the nodes and all the branch/airway information with 7 different types (Normal, Fan, Leak, LimitQ, FixedQ, Dummy/Gas, and Regulator and 12 different codes.


		The above is how you use the branch Code for cosmetic purposes and designate the layers (MVC01-MVC12). When defining or editing a branch you can assign or change the code which will affect the colors, layers, linetype and default resistance data for that branch. The nice thing is that you can just change the color, and linetype here and all the branches in the drawing will be updated. You can also use the AutoCAD layer command.


		Calculate the resistance dialog automatically calculates branch length.and lets you choose the formula that is right for you. Default numbers from Configure Branches if you click the Code radio button otherwise it defaults to the Previous values you entered.


		The above shows a powerful way to change all or a group of branch resistances. You could also use the SURVEYED formula to change the resistances based on survey data from a file.


		The program has many helpful features for modifying the branches on the drawing or in List Branches where you can filter the branches you want to view and or edit.

		Using Advanced List Branches you may sort by any parameter in the list ascending on first click the descending on the second. To sort by more than one sort by the Primary Last.

		The Advanced List Branches allows you to edit Branch information in form view with drop-down boxes and edit in place where appropriate. The lighter shade of green indicates values that cannot be changed in the list either because they are calculated or not valid for the branch Type. The above is sorted by branch Type descending.

		The above shows the dialog resized to show all the useful information.


		The List Changes button on Advanced List Branches brings up the above dialog box that is sortable, resizable and shows the changes in Orange.


		The above shows how to edit or modify a single branch. This dialog can be activated by selecting a branch off the drawing or from most of the List Features.


		The Define/Edit Fans allows you to move through the fan curves in a fan file and define new ones. You can choose a New Curve or a Modified Curve, which allows you to create an equivalent fan curve from 1 or 2 existing curves (UNEQ Series, UNEQ Parallel, EQ Series, EQ Parallel, or a Speed Density change). Other options are the Copy/Paste fan curve data, Show the Curve, List all the curves in the file and set the efficiency numbers for cost calculations.


		You can show the fan curve graphically with the operating point in red as shown above. Hovering over a point shows information about the point and curve. There are options to show cross hairs, zoom in and zoom out and more. The top always shows shows the curve number, name and blade setting.


		Above are the main input menus for MineVent as well as the two different calculation engines Hardy Cross and Gradient. The Gradient has better convergence and is more efficient as far as how many iterations it takes to converge.The Hardy Cross is overall faster. It is useful to try both on the same model for various reasons.


		Above are the main Output menus for MineVent. The most popular are Draw Quan/Pres Output, List Compare Quantities, List Negative Quantites, Edit Schematic and Color By.

		Output consists of color coded schematics diagrams with branch quantities and node pressures displayed as shown below. The schematic can be plotted separately or superimposed on mine maps. The output also includes information for setting regulators. If the network analysis program (Hardy Cross or Gradient) yields unsatisfactory results or fails to converge, the system has numerous diagnostic features to help the user correct the schematic. The system has features that let the engineer highlight problem areas of the ventilation schematic based on the output.

		The above is a sample of a Ventilation Schematic showing how it post the Airflow (kcfm in Magenta) on the airways and the pressures (in. w.g. White).on the nodes. If you are working in Imperial units, otherwise it is m^3/s and kPa. You can of course change the sizes on the numbers and the colors. The above is just a sample to show results and is not any kind of reasonable mine ventilation plan.



		Above is a section of a more realistic ventilation schematic showing how you can work off the mine map. Shows the kcfm on the branches and pressures and node numbers next to the node circles. You can notice how easy it is to change the colors of pressures and quanties by changing the layer color.


		You can change the sizes of text and arrows on the drawing and choose a decimal precision as well as Move and rotate parameters such as node numbers, pressures, quantities etc..


		The above shows the output of the Hardy Cross Method. There is more info if you scroll up. It can show you the fan operating point as well as whether any fan curves have concave or linear segments.



		The above shows the output of the Gradient Method. There is more info if you scroll up. It can show you the fan operating point as well as whether any fan curves have concave or linear segments.



		The List Compare Quantities shows what happens on two consecutive runs if you change something. The above is the result in DemoMine.dwg by just changing 2 Limit Quantity branches. It also shows the difference in fan cost at the bottom for whatever change you made to the schematic. If you color it on the drawing selecting color Red you get the below.


		The above was colored for a change of 5 percent and colored red the branches that changed by 5 percent or more with a line thickness of 100.


		The above shows the dialog interface for coloring by parameters Quantity, Air Horse Power, Gas, Resistance, Natural Ventilation Pressure, and Pressure Drop.




		The above allows you view and reverse any branches that have airflow going in the opposite direction as specified. There are also features to change them all at once or by drawing a polygon around the branches you want to reverse.

		The above shows you the regulator branches and the regulator opening, the desired quantity and the actual calculated quantity.

		The branch cost is calculated from the fan in use but you can change the numbers at the top and also choose only certain branch types or codes.


		List/Draw velocities lets you see all the velocity data and draw the velocity numbers on the opposite side of the quantity. This function is very powerful and can be useful even if you do not need the velocity data. The export function exports pretty mucn all data not just what is in the velocity list. It can be used as an alternative to List Branches and Advanced List Branches.

		Main MineVent and MineVent 3D Mining Ventilation Software Features
		Windows Dialog Box Interface Runs Entirely Inside of AutoCAD with all AutoCAD commands at your finger tips MineVent 3D allows use of all AutoCAD 3D features MineVent 3D can calculate NVP from node data Easy to Configure Customized Branch Colors, Defaults, Layers User Defined Branch Codes for colors and name them yourself such as Intake, Return, Leak etc.. Tabulate Quantities for selected Branch Codes Move Node Find Node List Nodes List Unused Nodes Change Node Number Read Node File Export/Import from csv text files. Modify your data in spreadsheet and import it back in. Creating Fan Files, unlimited number of Fan Files 99 Fan Curves for each Fan File 3 to 10 Point Fan Curves Copy and Paste Fan Curve Data from spreadsheet like Excel or other Show Fan Curves and Operating points Graphically List Fans Create a new fan curve from an existing curve that has a different air density or fans in series or parallel Multiple Seam Support Define and Modify Branches Move/Stretch Branches Copy Branches Check for Duplicate Branches List Branches. Allows you to filter by type, code, resistance formula and K factor and edit branch Advanced List branches to make changes in tabular format. Sorting by any parameter and more. Calculate Resistances 10 Formulas Stoppings and Leakage Calculations Special resistance formula for Regulator branches and List Regulator to show regulator opening List Regulators List/Draw Velocities Global Resistance Change Global K Factor Change Global C Value Change Draw Quantity/Pressure Output on Schematic Draw Gas Output on Schematic List Pressure Output List Quantity Output List Pressure Drops Display Mesh Correction -> Highlight Problem Meshes Review Output Diagnostics Reverse Negative Quantity Branches whole drawing or selection List, View & Reverse Negative Quantity Branches Edit Schematic & Change Sizes of nodes, arrows, quantities, pressures, decimal precision etc. Check Surveyed Data Spreadsheet Reports List Regulators and Calculate Regulator Opening List Compare Quantities to Compare Last 2 Runs & see percent cfm, air HP, Pressure Drop and cost changes Fan Cost List Branch Cost Hardy Cross Method Gradient Method for better Convergence and Efficiency Support for SI and Imperial Units Convert Drawings From/To SI Units to Imperial

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Mining Ventilation Software and More