Nanofluidic Characterization David Sharp David West Justin Davis Agenda Project Background Customer Needs Specifications Scheduling Concept selection Final Considerations What is a Nano Porus Membrane? Thin material with billions of microscopic pores Sought out for controlling separation of fluids Most commonly used for drug delivery and water filtration Project Background Characterize the flow rates through nonporous membranes No current ways to accurately tell what the true flow rates will be Data will be used to help the customer accurately predict the correct flow rate for each membrane These membranes will be used as a template to build carbon nano tubes (CNT) and then be used for applications such as cell physiology study. The Goal Construct the optimal method to test nano-porous membranes through either constructed or purchased materials. Measuring Characteristics of Flow: Flow rate Temperature Pressure Visualize Membrane during testing procedure Edit and Visualize any Data Collected Team Members and Roles David Sharp (Team Leader) Delegates tasks and maintains work flow David West (Designer) Conceives concepts and concept selection. Justin Davis (Organizer) Organizes schedule and keeps records of all working documents Most functions will overlap due to the size of the group and nature of the project Current System Customer Needs Measuring the pressure, temperature, and flow rate Easy to setup System must have a frame Capability to bleed the system to eliminate air bubbles or exchange fluid Compatible with different membrane sizes Real time visualization of the data User selectable flow rate Visualize membrane Inject secondary fluid into primary flow stream Fit under a microscope Compare Selected Mesurements Adjustable Sampling rate Specifications Test rig size limit (l x w x h) = 200x120x100 mm Membrane diameter = mm Development cost = $2,500 Pressure range = < 500 kPa Pressure accuracy = 0.1 Pa Rate range = mL/min Flow rate accuracy =.001 MicroL/min Temperature range = -20 to 100 deg C Temperature accuracy = 0.01 deg C Fine sampling rate = 100 samples per second Coarse sampling rate = 1 sample per minute Calculation Assumptions Laminar Flow through the pipe Standard Temperature and Pressure Fully Developed Flow Steady Flow Incompressible Flow Characterizing Flow Gantt Diagram Functional Decomposition Pair wise Comparison Matrix Pair wise Comparison Graph Pair wise Comparison Analysis Highest customer needs Measuring of flow rate, pressure, and temperature User Selectable flow rate Software/Storing and editing Data Lower customer needs Acquiring selected measurements Fit under Microscope Pareto Chart Pareto Graph Pareto Analysis Budget is major contributor for project design Test rig size will limit sensor sizes, however will not include pump Any need including data selection or constraint input scores high Note: A high score is due to the parameter being affected by a number of constraints Risk Assessment Main Components Flow Meter Temperature Sensor Pressure Sensor Pump Piping Membrane Holder Membranes (13mm) Computer Interface Program Pump Pugh Diagram Calculating Flow Flow Meter Pugh Diagram Calculating Flow Temperature Sensor Pugh Chart Pressure Sensor Pugh Chart Membrane Holder Pugh Chart Rough Membrane Holder Schematic Computer Interface LabViews visual interface makes it ideal for observing data during experimentation Ease to control sensors and other instruments Data can then be either exported from LabView for further analysis Although MatLab is a powerful program, LabViews user friendly interface makes it the better choice System Architecture Rough System Schematic Part Considerations For Final Product (Budget) Total Cost = $ Part Considerations For Final Product (Over Budget) Total Cost = $ Team Ethics Team members will arrive to each team meetings on time. Each meeting will be mage on a weekly basis. If a team member can not attend a team meeting, they must inform the other team members before the meeting time. Each task assigned must be evenly distributed within the group. Team members assigned work must complete that tasks by a discussed due date. A team member who can not complete the task promptly, or needs assistance finishing that task must then inform the other members of the group to discus either an alternative or work together to get the task completed. Final Considerations Key Considerations Moving forward Keeping under budget Keeping within specifications Accuracy What Lies Next Exact calculations for chosen flow system Computerized detailed schematics of system