“HEAR IT AND FORGET IT, SEE IT AND REMEMBER IT, DO IT AND UNDERSTAND IT” R12310: ME and ChemE Lab and Demo Hardware Development DPM – Spring 2012

Presentation Outline Functional Decomposition Benchmark Chart Metrics and Specifications House of Quality PRPs  Overview  Objectives/Deliverables Staffing List Feedback from Customer Meeting Questions

Functional Decomposition ME Demo Constraints: Simple and easy to use, easily stored, assemble and disassemble quickly, minimal maintenance, meet budget, prevent injury

Functional Decomposition ChemE Lab Hardware

Benchmarking SourceTecQuiptment TopicHeat Transfer Size650mm x 480mm Measurement Capabilities Linear, radial, surface heat transfer. Transfer through liquids or gasses. Equipment TecQuiptment (TD1002) Heat Transfer Device Description This device can be used to demostrate linear and radial heat conduction. It is also capable of demonstrating surface heat transfer (conduction, convection and radiation). Also, demonstrates heat conduction through liquids and gasses. Calculation of thermal conductivity (k value). Additonal Comments Sound level less than 70 dB, 220 to 240V electic supply. Operating relative humidity range: 80% at temperatures < 31°C decreasing linearly to 50% at 40°C

Benchmarking SourceFlorida State University TopicExtended Surfaces Measurement Capabilities Temperature profiles Equipment Cylindrical extended surface, thermocouples, constant temperature bath, digital temperature indicator, switchbox, wind tunnel Time lengthLab period about 2.5 hours Description The steady state temperature profile is recorded for varying convective coefficients (i.e. the wind tunnel speed is increased)

Metrics and Specifications – ME Demo Hardware *** Continued on next slide

Metrics and Specifications – ME Demo Hardware

Metrics and Specifications – ChemE Lab Hardware

House of Quality – ME Demo Hardware

House of Quality – ChemE Lab Hardware

PRP #1: Extended Surfaces Objectives  Reinforce the basics of conduction and convection  Increase student understanding of extended surfaces  Demonstrate surface area’s impact on heat transfer  Comparison of at least two different fin geometries or tip conditions Demo Hardware Capabilities  Measures ambient air temperature and temperature distribution along object  There will be a constant heat flux acting on the base of the fin, or the base will be held at a constant temperature  May be assisted with a DAQ software

PRP #2: Transient Heat Transfer Objectives  Enhance student comprehension of transient heat transfer  Demonstrate lumped capacitance, 1 st term approximation, and semi-infinite models  Show temperature change over time Demo Hardware Capabilities  Measures temperature at different points of a specimen, and measure the temperature of the surroundings  May be assisted with a DAQ software  Areas allowing for creativity: specimen shape and material, cooling or heating process

PRP #3: Free vs Forced Convection Objectives  Enhance student comprehension pertaining to convection  Demonstrate free and forced convection isolated from one another  Calculate convective coefficient, “h” Demo Hardware Capabilities  Measures ambient air temperature, temperature of object, and fluid flow rate (for forced convection)  May be assisted with a DAQ software  Possible creativity with convective coefficient by location and object geometry

PRP #4: Isentropic Efficiency Objectives  Demonstrate “real” system and compare to ideal (isentropic) system Demo Hardware  Shows concept of isentropic efficiency  Uses a system that loses a measurable amount of energy  Provides information needed for table look up and calculations Temperature, Pressure, velocity

PRP #5: Entropy Objectives  Demonstrate entropy through fluid diffusion Demo Hardware  Shows concept of entropy as related to fluid diffusion  Shown for two scenarios

PRP #6: Chem E Lab Equipment Objectives  Demonstrate transient and steady state heat conduction  Provide the means to measure thermal conductivity Project Suggestions/Capabilities  Equipment creates a one-dimensional thermal circuit  Equipment creates and maintains steady state conditions  Equipment outputs temperature distribution and heat flux at S.S.  Depending on staffing and budget, the equipment plots the temperature distribution as transient conduction approaches S.S. (DAQ software) q R T1T1 T2T2 q = ∆T/R q,∆TRR = f(geometry,k)k

PRP #7: Chem E Lab Integration Objectives  Fully integrate the apparatus developed by the Chem E Lab Equipment team into Chemical Principles Lab I. 3 segments of lab integration  Facilities Preparation  Adequate power sources/workstations  Water lines  Data Acquisition  Sufficient computers with DAQ software  Equipment Integration  Assembly timeframe/instruction  Ergonomic review

Staffing Mechanical Engineers (2-4 per project)  Background in demo topic preferred  Thermodynamics  Heat transfer  Designing (CAD, Stress analysis (ANSYS), etc)  Manufacturing/Assembly  Labview/DAQ Experience (Demo dependent)  Thermo and Structural Analysis Industrial Engineer (1)  Ergonomics  Safety  Statistical Analysis  Project Management  Instruction manual design (Process design)

Customer Feedback – ME Demo Hardware Dr. Stevens  Combine heat transfer demos into one project  Create shared DAQ software and equipment  Models should be at steady state  Add specification for accuracy of measurements Prof. Landschoot  Entropy idea evaluation – interested in pursuing further  Feasibility evaluation – plausible

Customer Feedback – ChemE Lab Hardware Professor Gregorius and Dr. Koppula  Specifications are well written, but narrow the scope of the project too much – heat transfer could be radial and 1D  Temperature specifications were changed to percent deviation at steady state (EM1, EM2)  Diameter and length specifications were combined, does the equipment adapt for different sizes? – binary (EM6)  Ideal and marginal values were given for time to reach S.S. (EM4)  Given the materials that will be used as specimens, better defined the range of acceptable k values (EM8)

Questions?