Paper ID #29340Creating and Facilitating Engaging, Rigorous Fully-Online TechnicalCourses (or just Online Content for Face-to-Face Courses) - an MEBExampleDr. Tracy Q Gardner, Colorado School of Mines Tracy Q. Gardner graduated from the Colorado School of Mines (CSM) with B.S. degrees in chemical en- gineering and petroleum refining (CEPR) and in mathematical and computer sciences (MCS) in 1996 and with an M.S. degree in CEPR in 1998. She then got her Ph.D. in chemical engineering, studying transport in zeolite membranes, from CU, Boulder, in 2002. She did a postdoc at TUDelft in the Netherlands in 2002 and 2003, studying
Paper ID #23542A Framework to Guide Design of Interactive and Constructive Learning Op-portunitiesDr. Tracy Q. Gardner, Colorado School of Mines Tracy Q. Gardner graduated from the Colorado School of Mines (CSM) with B.S. degrees in chemical en- gineering and petroleum refining (CEPR) and in mathematical and computer sciences (MCS) in 1996 and with an M.S. degree in CEPR in 1998. She then got her Ph.D. in chemical engineering, studying transport in zeolite membranes, from CU, Boulder, in 2002. She did a postdoc at TUDelft in the Netherlands in 2002 and 2003, studying oxygen conducting mixed oxide membranes and teaching
development responsibilities here include the Unit Operations Lab and Senior Design (including Aspen), among other undergraduate core courses. His research interests include digital & online methods in engineering education.Dr. Tracy Q. Gardner, Colorado School of Mines Tracy Q. Gardner graduated from the Colorado School of Mines (CSM) with B.S. degrees in chemical en- gineering and petroleum refining (CEPR) and in mathematical and computer sciences (MCS) in 1996 and with an M.S. degree in CEPR in 1998. She then got her Ph.D. in chemical engineering, studying transport in zeolite membranes, from CU, Boulder, in 2002. She did a postdoc at TUDelft in the Netherlands in 2002 and 2003, studying oxygen conducting mixed
AC 2012-5123: INTERACTIVE SIMULATIONS COUPLED WITH REAL-TIME FORMATIVE ASSESSMENT TO ENHANCE STUDENT LEARN-INGDr. Tracy Q. Gardner, Colorado School of Mines Tracy Q. Gardner graduated from the Colorado School of Mines (CSM) with B.S. degrees in chemical en- gineering and petroleum refining (CEPR) and in mathematical and computer sciences (MCS) in 1996 and with an M.S. degree in CEPR in 1998. She then got my Ph.D. in chemical engineering, studying transport in zeolite membranes, from CU, Boulder, in 2002. She did a postdoc at TUDelft in the Netherlands in 2002 and 2003, studying oxygen conducting mixed oxide membranes and teaching reactor engineering, and she has been teaching back at CSM since 2004. I am now a
Fuel Cell Page 13.271.13Example Problem Statement: In this example we will apply principles of microscopicenergy balances to the design of a fuel cell system. For simplicity, we will consider therectangular geometry shown below, which describes flow over and heat conductionthrough a solid plate, with a heat source (due to reaction). Flow, Solid, Insulated h, T k, q Boundary xThe governing equation describing the thermal energy conservation equation is given by: d 2T k = −q (1
Tpolycarb (x) = 13320 C m x + 122 o C o LStudents will obtain a different temperature profile for each material they study and canthen use Fourier’s Law to determine the conduction heat transfer rate. dT kq''x = 1k = (Tw,s 1 Tp,s ) dx LBy providing the thermal conductivity, k, or the heat flux, q''x , it is possible to calculatethe other parameter. Alternatively, students could determine heat flux from the steadystate heat generation experiment outlined below. 0.21W mKq''x = (122 o C 1 88.8 o C) = 697 W 2 0.01m mOne Dimensional Conduction Through Composite Systems:Steady state heat conduction
2 ρ 2where Pi is the pressure, Vi is the velocity, αi is the kinetic energy correction factor and Zi is theelevation at point i, ρ is the density, g is acceleration due to gravity, WP is the pump work, hfp isthe frictional losses associated with the pump, and hf are the frictional losses due to skin friction,sudden contractions and expansions, and pipe fittings. Students don’t readily connect equation(1) with the energy balance they see in thermodynamics. They are most familiar with the energybalance for a single input, single output system operating at steady state in the form [Smith et al.,2005] ∆H + ∆KE + ∆PE = Q + W (2)where H is enthalpy, KE
multiple times to students that valves areabout the only thing that can be adjusted in a chemical process, and that adjustments in Page 26.233.2temperature, pressure, and composition, for example, all occur by turning a valve.Heat Exchangers Zoned Analysis Required. In many organic chemical processes, a subcooled liquid streammust be vaporized and superheated for a vapor-phase, catalytic reaction. A typical heat source issteam condensing at constant temperature from saturated vapor to saturated liquid. Anapproximate T-Q diagram is shown in Figure 1. The solid lines represent the actual situation.The dashed line represents the situation often
) qe Q QbCeAgain, the students can use Excel to plot equation (4) and determine the parameters. Theconstant Q represents the maximum adsorbate that can be adsorbed onto the surface, andb is the isotherm constant. If b is large, and the quantity Q b is much larger than one, the € The implications can be discussed in class.isotherm is favorable.Modeling the adsorption kinetics is more complicated, and requires a differentialequation. This is probably not too difficult for first year engineering students, but may befor students with less mathematical background. To assist nonengineering studentsunderstand a first order process, it is helpful to first show them some examples: flow offluid from a tank, or the braking of an
for a fixed number of stages in the column.In addition, this paper provides the VBA code to find real roots of any cubic equation: such afunction can also be useful in other Excel applications.The inputs to the spreadsheet are the x-y equilibrium data, the feed composition and “q-value”(usually, the liquid mole fraction of the feed: formally defined as the heat required to vaporizeone mole of feed at the entering conditions divided by the molar latent heat of vaporization of thefeed8 (equation 11.4-12, page 710)), the desired tops and bottoms purity, the reflux ratio, and theMurphree efficiency. The outputs are the location of the azeotrope (if present), the intersectionpoint of the feed line with the equilibrium curve, the required number of
ux uy uz 0 (19) t x y z x y y zHeat transfer in the flowing fluids occurs by both convection and conduction. The energybalance for the flowing fluids in the pipes is: T T T T 2T 2T 2T C p C p u x uy uz k x 2 k y 2 k z 2 Q (20) t x y z x y z After obtaining the components of the velocity vector by solving the Navier-Stokes equations,the energy balance equation can be solved and the temperature profiles can be determined.iii. Boundary ConditionsFor the Navier-Stokes equations, the
Infiltration and Total Heat Losses Infiltration Heat Loss Total Heat Loss Month Qinf (BTU/month) Month Q (BTU/month) Jan. 7.668E+06 Jan. 2.079E+07 Feb. 6.557E+06 Feb. 1.785E+07 Mar. 5.441E+06 Mar. 1.517E+07 Apr. 3.110E+06 Apr. 9.300E+06 May. 9.116E+05 May. 3.926E+06 Jun. 0 Jun. 0 Jul. 0 Jul. 0
Diagram for Styrene ColumnScenario Description: During normal operation, C-402 begins to vibrate to a point where theautomated safety system trips and shuts the compressor off to prevent equipment damage.In-Class Activity:Answer the following questions (assuming that restarting the compressor has been tried andhas failed): a. How do you expect T-401 to react to this change in process operation? b. How do you expect the basic control layer to respond to this change in process operation?Key prompts for instructors to ask students:1 (a) How do you expect T-401 to react to this change in process operation?Q: What is the process purpose of the compressor (C-402)?A: The compressor removes the non-condensable gases from the reflux drum and
recognizedthey needed to use the information in the graph to the right of the simulation. However, twodifferent errors caused Gerry to submit the wrong answer: Gerry: This is insulated which means Q is zero. So, ‘calculate the amount of work that the piston and block did on the system’. So as I can see in PV graph, this is [an] irreversible process, so the area under the PV curve will be the work that the piston did on the system. Since [the] system got the work, work will be a positive number. So I can just simply get the area under the curve which would be, I don’t know, 15 times 15? So 225 approximately.Figure 3. Procedural question from Work IVLGerry was correct that it is an irreversible process and that work is equal
) − R ln(P ), where R = 8.314 kJ/(kmol.K) . • a. Sketch and label the process. • b. Develop mass, energy, and entropy balances for this evolution process. State all relevant assumptions • c. Solve the balances numerically and determine if the process thermodynamically feasible. • d. When testing the system, you realize that the process cannot be operated adiabatically, i .e., heat is lost at the boundary of the process (Q˙ B > 0). How would you change the process inlet to make the process feasible and keep the outlet streams as specified?(a) A sketch of the proposed process is given in Figure 4. ˙ b = 900 kJ/kmol
Formation for Sustainable Manufacturing,” Chinese J. ofChemical Eng., 16(3), 416-423, 2008. 5. Li, J., J. Xiao, Y. L. Huang, and H. H. Lou, ”Integrated Processand Product Analysis: A Multiscale Approach to Automotive Paint Spray,” AIChE J., 53(11), 2841-2857,2007. 6. Li, J., and Y. L. Huang, ”Bayesian-based On-line Applicability Evaluation of Neural NetworkModels with Automotive Paint Spray Application,” Computers and Chemical Engineering, 30(9), 1392-1399, 2006. 7. Xiao, J., J. Li, Q. Xu, Y. L. Huang, and H. H. Lou, ”Ant Colony System (ACS)–BasedDynamic Optimization for Reactive Drying of Polymeric Coating,” AIChE J., 52(4), 2006. 8. Xiao, J., J.Li, Y. L. Huang, and H. H. Lou, ”Cure-Window-Based Proactive Quality Control in Reactive Drying
11.1320.5 PBASIC is easy to use and has good help system; examples of code can be cut and pasted inthe active programming window, and tried out. The PBASIC software and Excel add-in programare free and can be downloaded from the Parallax website3.Results and DiscussionInitial experiments were done to understand the behavior of the valve. In fluid mechanics,students will have learnt about flow through constrictions when dealing with flow meters.Figure 2 shows the measured relationship between flow rate and pressure drop with the valvefully open for a particular valve. Over most of the flow regime, the flow is laminar and so therelationship may be represented by Q = Cv(x).∆PHere Q is the volumetric flow rate, Cv is the valve coefficient, x is
nature. While we will ask about the presence of the other courses in yourcurriculum, our topical questions areprimarily focused on courses of this type.Q1.15 Of the ${Q1.11/ChoiceGroup/SelectedChoices} "Physical Chemistry orThermodynamics" courses that you indicated your students take above, how many are"Thermodynamics" courses (either General or Chemical Engineering), by the above definitions?▼ 0 ... 5 or moreDisplay This Question: If Of the ${q://QID70/ChoiceGroup/SelectedChoices} "Physical Chemistry orThermodynamics" courses th... != 0Q1.16 You indicated that students take at least one Thermodynamics course. In the standardcourse sequence, when do students typically take the first/only Thermodynamics course?o1st semester / quarter 1st
= 0.6155x 800 Group #1 700 Group #2 600 Group #3 Q Cold [W] Group #4 500 Group #5 400 Group #6 300 Group #7
22.1127.4Equation 3 and the cost of electricity, which is 0.07/kWh. A year is assumed to be 8000 h,which allows for about one month of plant shut down for maintenance.The purchased cost of each compressor is given by: ( PC comp [$] = $15.9 W& [ W] 0.8 ) (5)The design equation for the heat exchanger is given by: Q[W ] = m& air [kg/s]C p,air [J/kg K](Tair ,in − Tair ,out ) = m& cw [kg/s]C p,cw [J/kg K](Tcw,out − Tcw,in ) = U [ W/m 2 K] A[m 2 ]FΔTlm
Lab: Team A 1 R Co-current vs = 0 = q UA∆Tlm U Ri hi countercurrent R0 R0 1 v + ln + kw Ri h0 Lab 1, Report Report Lab 2
(U) are calculated in the usualmanner set forth in any standard heat transfer text, see for example Holman[3]. In addition, thetechnical evaluation of an immersion chiller in this application has been covered by Joye andSmith.[4] Q = mcool ⋅ Cp ⋅ (Tcw,out − Tcw,in ) = U ⋅ Aex ΔTLM [1]where Q is the heat transfer rate, mcool is the cooling water flow rate, Cp is water heat capacity,Tcw,out is the cooling water outlet temperature, Tcw,in is the cooling water inlet temperature, U isthe overall heat transfer coefficient based on Aex , the outside surface area of the cooling coils,and ΔT LM is the log-mean average temperature driving force. Students are asked to calculate Ufor each data set and plot
. Sem + MEB MEB only Avg. Avg. Q# Question text p<0.05 p<0.05 Change Change I am confident I will obtain an undergraduate Q1 0.24 -0.68 * degree in engineering. I am confident I will obtain an undergraduate Q2 -0.16 -0.91 * degree in chemical engineering. Q3 I know what chemical engineering is. 1.36
) and Newton’s law of cooling. Students will understand conduction and convection resistances, and be able to use3.4.2 q= ΦT / ΥRes and q= UA Φ Tlm. Students will understand q = hA∀ΦT and how h is qualitatively related to Nu, Re, 3.4.3.1 and Pr, and how to obtain a value for h - qualitative problem.3.4.3 Students will understand q= h A Φ T and how h is qualitatively related to Nu, Re, 3.4.3.2 and Pr, and how to obtain a value for h - quantitative problem. Students will understand Fick’s law and the contributions to the flux arising from a3.5.1
ofPerusall.The positioning of the comments can be used as a criterion to determine each assignment’s grade.In this case, 10% of each assignment was based on the comments’ distribution across the reading.An analogy to this idea would be that only commenting on the action on 30% of a football orsoccer field would not lead to a full understanding of the game’s action. The effects of changingthe distribution from 10 to 50% will be discussed in the talk for the semester averages.As the semester progressed, comments appeared to be more randomly placed and less dialoguebetween students was occurring. For the last few assignments, comments were given four moredistinct designations to encourage more interaction. The categories were: 1. “Q” If you areconfused
followingquestions on an end of the course evaluation form: This semester videos of your presentations were made available to each student group, and you were asked to provide feedback on your individual performance as well as your Page 26.927.6 teammates’ performance. Do you feel this experience helped you improve your presentation skills? Is it worth it for [the instructor] to continue recording student group presentations and providing videos to groups for their evaluation in the future? Which presentation feedback method did you find most helpful – evaluation of your own presentation/Q&
, mR = inside capillary tube radius, mL = capillary tube length, mFor a laminar, incompressible, Newtonian fluid, the shear rate at the circular pipe wall,γ wall can be calculated from the microscopic balances4. The result is shown below.γ wall = (4Q)/(πR3) = (32Q)/(πD3) 8V/D= 4V/R (2)Where: Q= volumetric flow rate, m3/sV= average fluid velocity, m/sThe Hagan-Poiseuille equation can also be calculated from the microscopic solution forthis problem4, and may be used to calculate the viscosity of a laminar, Newtonian,incompressible fluid ∆PR 2V = (3) 8µLThe equations for Reynolds number and entrance length2, Le
chemical engineers are well acquainted with the theory and correlations developed forheat exchanger design we describe the exact methods used for calculations in the particular labexperiment at hand so there will be no confusion as to what was done. Experimentally, theamount of heat transferred in the exchanger may be calculated from the average valuesdetermined by energy balances for the shell and the tube sides of the exchanger. Eq 1 Eq 2Validity of the experimental values for the two fluids may be checked by comparing the twovalues of Q – this adds validity to
to study natural convection in cavities: Literature review. in IOP Conference Series: Materials Science and Engineering. 2012, IOP Publishing.13. C. Sun and Q. Zhou, Experimental techniques for turbulent Taylor–Couette flow and Rayleigh– Bénard convection. Nonlinearity. 27(9), 2014, pp. R89-R121.