the relative location of the state whenanalyzing a power cycle. ! Figure 1. Clausius app with T-s diagram for water on Apple iPad.Clausius reverses the approach commonly taken by existing reference applications by forcing theuser to first locate the state on a property chart using their fingers to glide along a knownproperty until they are in the desired region. As the user navigates their way to the desired state,Clausius provides instantaneous and continuous property values of the state at the finger tip.Thus, the navigation action itself delivers information related to (a) Property Trends: how theproperties change across the property chart and (b) Regional Context: where the state is locatedwithin the property chart. For
, the author’s personal interview with thestudents after they presented their work to the museums indicated general satisfaction and a senseof accomplishment. Also, the review of the student reflections presented in their final reportindicated that by working on these projects, the students started to think about why service learningmatters and how their project can make a difference addressing social problems. Some of theprojects are presented in Figures 1 and 2. The feedback from museum staffs was very positive andthey expressed willingness to continue the collaboration. a b Page 7 of 11 c
output of thecontroller is connected to the duty cycle of the DC-DC buck converter. The effects of changes insolar irradiance, temperature, and load on output power based on the two MPPT algorithms canbe studied. Figure 10 shows the response of PV power to the step and gradual changes in solarirradiance. It can be seen that both algorithms provide good dynamic and static responses.FractionalOCV method provides more stable power but it relies on accurately selecting theproportionality constant. Due to the perturbation nature of P&O method, the instantaneous powerfluctuates, which can be eliminated with filtering techniques. (a) (b) Figure 10 The response of PV array power to the gradual and
Sealing Figure 3: Cell Fabrication StepsDSSC Characterization The DSS cell was characterized using the simulated sun light at 1.5 AM with XeArc Lamp and power supply purchased from Newport and Parstat 2273 AdvancedElectrochemical system to measure I-V curve and the impedance plot (Nyquist plot) areshown in Figure 4. The DSSC parameters Voc, Isc and FF were extracted from the I-Vcurve to find the cell efficiency. The cell internal resistances are estimated from theNyquist plot. Page 22.857.5 Figure 4: (a) Solar Simulator (b) Advanced Electrochemical SystemInfusion of DSSC Research Results into Classroom
appropriate mastery of the knowledge,techniques, skills and modern tools of their disciplines; b) an ability to apply current knowledgeand adapt to emerging applications of mathematics, science, engineering and technology; c)design a system, component, or process to meet desired needs within realistic constraints; h) understand the impact of engineering solutions in a global, economic, environmental, andsocietal context; and k) use techniques, skills, and tools in engineering practice. Required andrecommended textbooks are: G. M. Masters, Renewable and Efficient Electric Power Systems,B.K. Hodge, Alternative Energy Systems and Applications, and instructor lecture notes.Other alternative energy power generation sources (e.g., geothermal, marine energy
the State Demographer, Institute for Demographic and Socioeconomic Research, The University of Texas at San Antonio 6) Braden R. Allenby, David T. Allen, Cliff I. Davidson, Teaching Sustainable Engineering, Industrial Ecology in North America, Volume 11, Number 1, 2007, Pages 8-10 7) Valeria Costantini, Salvatore Monni, Environment, human development and economic growth, Ecological Economics, Volume 64, Issue 4, 1 February 2008, Pages 867-880, ISSN 0921-8009 8) Erling Holden, Kristin Linnerud, The sustainable development area: satisfying basic needs and safeguarding ecological sustainability, Sustainable Development, Volume 15, Number 3, 2007, Pages 174- 187 9) M. I. Khan, A. B. Chhetri, M. R. Islam
13. A combination of a logical 10 moves the motor in onedirection; a combination of 01 moves the motor in the opposite direction; and a combination of00 cuts off the current to the motors (i.e. stalls the motors).B. Charging A charge controller, or charge regulator is a voltage and/or current regulator to keep batteriesfrom overcharging. It regulates the voltage and current coming from the solar panels going to thebattery. Ordinary charge controller will often work with high voltage panels if the maximuminput voltage of the charge controller is not exceeded. However, a lot of power will be lost, from20% to 60% of what your panel rating. The only way to get full power out of high voltage gridtie solar panels is to use a MPPT controller
Multiple choice questions (N = (response) (response) (response) 30 responses) % % % opportunities. How would you rate the balance of the content? 11 a. technical lecture content need more just right need less (4) 13.3% (19) 63.3% (7) 23.3% 11 b. technical need more just right need less tour content (9) 30% (20) 66.7% (1) 3.3% 11 c. project need more just right need less work (5) 16.7% (24) 80% (1) 3.3% 11 d. computer programming need
emissions inthese same categories (Figure 5 a & b). This largely reflects the drafting and implementation ofa formal “Energy Policy” by the VP of Operations. Page 22.566.8 (a) (b) (c) (d) Figure 5. The data presented show annual emissions (eCO2) (a) per square foot of building space (kBtu ft- 2 ), (b) per student and total energy use (c) per square foot (kBtu ft-2), and (d) per student (MMBtu student- 1 ) between 2002 and 2008. Using
60 42.6 4.25 11.955 75 50.7 4.45 10.976 90 47.3 4.2 9.767 105 41.6 4.18 9.858 120 44 4.2 11.379 135 45.3 4.15 10.9410 150 51.6 4.25 10.8Figure 5. Data recording and graphical analysis for 50 W, 12 V incandescent light bulb run by a bicycle generator with pedal power. Page 14.889.7 (a) (b) (c)Figure 6. (a) Graphical analysis for 15 W, 12 V, CFL bulb run in (b) by a
AC 2008-2241: LARGE-SCALE PHOTOVOLTAIC SYSTEM DESIGN: LEARNINGSUSTAINABILITY THROUGH ENGINEERING CLINICSPeter Mark Jansson, Rowan UniversityUlrich Schwabe, Rowan University Ulrich Schwabe is a graduate student at Rowan UniveristyAndrew Hak, Rowan University Andrew Hak is a senior in electrical and computer engineering at Rowan University Page 13.837.1© American Society for Engineering Education, 2008 Large-Scale Photovoltaic System Design: Learning Sustainability through Engineering ClinicsI. AbstractWorking on cutting edge technology projects with industry is a key component of RowanUniversity’s engineering
year as shown in Figure 2 (b). Both of them are the fastestgrowing renewable energy sectors. However, electricity from sustainable energy resources(excluding hydropower) in 2007 still represents a small percentage of overall installed electricitycapacity (3%) and generation (2.5%) in the U.S. as shown in Figure 2 (b). Page 14.752.3 Figure 1 US Primary Energy Overview (Quadrillion Btu)2 (a) (b)Figure 2 sustainable energy overview (a) and the energy resources distribution in 2007 (b)3To reduce national consumption of energy and to
irradiation on its roof and walls. Thesimulation is performed for a home in the southwest portion of the United States, specifically,Phoenix. The simulation is performed twice: a) with half of the roof shaded with PV modulesmounted on a rack, and b) with no PV modules. Even though the specific device used here toprovide the shading is PV arrays, any other means would produce similar results. The dynamicthermal model of the house is implemented in TK-Solver. The simulation goes through everyhour to determine the required cooling and heating load. It takes into consideration direct anddiffuse solar irradiance. It uses the Sol-Air temperature approach to determine wall and rooftemperatures. This approach modifies the outside skin temperature depending
. Meiry “Bang-Bang Aspects of Manual Control in High Order Systems,” IEEE Transactions on Automatic Control, vol. 10, no. 3, pp. 336-342, July 1965. 6. Y. Chen and J. Naughton," An Undergraduate Laboratory Platform for Control System Design, Simulation, and Implementation," IEEE Control Syst. Mag., vol. 20, no. 3, pp. 12-20, June. 2000. 7. R. Molengraft, ML Steinbuch, and B. Karker, "Integrating Experimentation into Control Courses, "IEEE Control Syst. Mag., vol. 25, no. 1, pp. 40-44, Feb. 2005. 8. K. Arzen, A. Blomdell, and B. Wittenmark, "Laboratories and Real-Time Computing," IEEE Control Syst. Mag., vol. 25, no. 1, pp. 30-34, Feb. 2005. 9. D. Varsakelis and W. Levine," An
conditioning, and understand their workings and principles. It provides students withknowledge so they are able to design, analyze, and implement small-scale standalone and gridconnected renewable or hybrid energy systems.This course supports the achievement of the following outcomes: a) an appropriate mastery ofthe knowledge, techniques, skills and modern tools of their disciplines; and b) an ability to applycurrent knowledge and adapt to emerging applications of mathematics, science, engineering andtechnology. Our upper-level undergraduate course on renewable energy and power systems wasfirst offered in spring 2009 quarter. It is a three credit-hour course. The course primarily focuses
theconcepts of both curve fitting and fluid properties. Air at 300 K and 200 kPa is heated at constant pressure to 600 K. Determine the change in internal energy using (a) air tables (b) constant specific heat (c) average specific heat (d) polynomial fit given in the text for specific heat and (e) curve fit in class for air tables. Compare the results and draw some conclusions. The third part deals with modeling of components and thermal systems. Only twotypes of thermal systems are considered: pipe and pumping systems and power systems.For each system, the process of identifying the system and its component, designvariables (variables to be determined through analysis to satisfy the need/requirement),and parameters
successoffices. In the event a participant’s efforts to remediate their GPA within the probationary periodfailed, the student was dropped from the program, and a suitable replacement was sought fromthe scholarship application pool of applicants.IV. Scholarship Program ActivitiesThe implementation activities associated with our scholarship programs include various ways toengage the scholars with the engineering profession in support of nuclear-related industry. Afterthe completion of each outreach and recruiting cycle, the annual program participant activitiesincluded the following: a. New student orientation, student advising and registration b. Mentoring & PBL/research activities to engage students c. Extracurricular
American Society for Engineering Education, 2012 Novel Approach to Conducting Labs in an Introduction to Thermodynamics CourseAbstractThis paper describes an easily implementable new approach to thermodynamics laboratoryinstruction that directly addresses ABET Criterion b) an ability to design and conductexperiments, as well as to analyze and interpret data. In a traditional lab, students conductpreconfigured experiments based on established procedures. They then gather, analyze andinterpret data, and write reports. However, little is done to train engineering graduates to designexperiments for a specific purpose and without a prescribed procedure. However, engineeringprofessionals are frequently tasked with
Paper ID #18773Energy Engineering Undergraduate Degree Program: Lessons Learned fromProgram Development and LaunchDr. Greg Kremer, Ohio University Robe Professor and Chair of Mechanical Engineering, Ohio University Program Director: Energy Engi- neering Director: ”Designing to Make A Difference” ME / EnE senior capstone design experience. c American Society for Engineering Education, 2017 Energy Engineering Undergraduate Degree Program: Lessons Learned from Program Development and LaunchIntroduction:The National Academies have identified energy issues as among the most significant facinghumankind in this
hardware that communicates directly with the user and or the utility. Uncontrolled charging is merely the act of people plugging in their EVs at any time that is convenient to them and the charging of the battery taking place regardless of grid considerations such as price or stability. Due to the size of the load posed by charging EVs, the demand profile of a region with EVs could drastically change as EVs are integrated [19]. To aid this transition, achieve more stable operation, and reduce the cost of power used to charge EVs, controlled charging is proposed. Uncontrolled charging of many EVs on a large scale would make for difficult load forecasting and cause challenges for power quality and equipment lifespan. B. Power Quality EVs charge by
. Figure 15. A snapshot of the Control screen of the CCM4. Assessment of Student Learning OutcomesStudent learning outcomes were assessed throughout the project duration in each department aspart of its own senior design course. As in senior design courses at most institutions, the studentlearning outcomes in the senior design in the three departments typically were assessed on some ofthe key ‘a thru k’ ABET-defined student learning outcomes such as a) ability to apply knowledgeof mathematics, science, and engineering, b) ability to design and conduct experiments, c) abilityto design a system, component, or process to meet desired needs, d) ability to function onmultidisciplinary teams, f) understanding of professional and ethical responsibility
Energy Program3 provides some of the most lucrative rebatesfor renewable energy system installations in the nation, and this clinic experience allowedengineering students to directly participate in a growing renewable energy market while learningmore about the electrical design of PV systems. In order to assure that their PV systems wouldbe economically feasible and well designed, the City of Ocean City (OC) and the OC Board ofEducation hired Integrated Systems (a consulting engineering group) to determine appropriatedesigns and plans for each of the twenty buildings they were considering. The feasibility studydetermined that ten buildings were good candidates for the PV systems. The consultingcompany (acting as an industry affiliate to the
AC 2012-4605: INTEGRATING POWER ENGINEERING INTO MIDDLEAND HIGH SCHOOL MATH CURRICULUMSMr. Mark Vincent Abbott, University of Illinois, Urbana-Champaign Mark Abbott obtained his B.S. degree from the University of California, Davis, in biomedical engineering. He is now a graduate student at California State University, Los Angeles, studying electrical engineering. Abbott’s main interests are in power and systems engineering. His research involves improving efficiency of residential vertical axis wind turbines by developing a control algorithm for an adaptive, power sensing, and pulse-width-modulation (PWM) controller. As an IMPACT LA Fellow, Abbott works closely with teachers from LAUSD to develop hands-on
Society of Engineering Education Annual Conference and Exposition, 200222. Hodge, B. K., “Alternate Energy Systems – A New Elective?,” Proceedings of the American Society of Engineering Education Annual Conference and Exposition, 200223. Rosa, A. J., Predecki, P. K., and Edwards, G., “Technology 21 – A Course on Technology for Non- Technologists,” Proceedings of the American Society of Engineering Education Annual Conference and Exposition, 200424. Jansson. P. M., Stewart, J., Heston, W., Molner, R., Murphy, J., and Tomkiewicz, P., “Undergraduate Service Learning: Campus Photovoltaic System Siting, Design, and Permitting,” Proceedings of the American Society of Engineering Education Annual Conference and Exposition, 200525. Wies, R
Instrumentation Data Center [7], for later use. The instrument takes measurements every second, writes 1-minutes averages into the database. The time stamp is Standard Central Time. It is also possible to download selected hourly data from MIDC 2. A calculated time-series Clear sky Global Horizontal Irradiance GHICLEAR-SKY[k], in synchronism with the measured GHIMEAS[k] time series. The former is calculated in solar time; the latter are obtained in standard time. Reference [8] offers a variety of methods to calculate the clear-sky irradiance. We have chosen one due to B. Harwitz, due to its simplicity. ∑ [ ] =∑ (1
spring 2006, a different PV-panel was selected for trial use in the FYS, a Kyocera Mini-module that comes wired with two sets of leads similar to our custom-made modules (9.9 Voc or19.8 Voc, 1.12 Wp). This panel was chosen because it is very rugged, utilizing single-crystallinecells encapsulated in acrylic with built-in mounting holes in the corners. Approximate cost was$18 per module but is now $23 per module.This paper describes the current FYS course, with emphasis on the experimentation, analysis,and modeling of the current system using the Kyocera Mini-modules. The different sections willaddress: a. Course overview b. Use of experimental results for the PV panel and DC motor to define the torque/speed characteristic of the combined
(# correct) 27 students 15 students % A (9 or 10) 1 4 0 0 1 B (8 ) 3 11 3 20 3 C (7) 3 11 4 27 8 D (6) 8 30 4 27 13 F (5 or less) 12 44 4 27 76Conclusions and Long Term GoalsA complete cycle of four ELG semesters have been completed. Overall, the class was a successaccording to student comments. Unfortunately, the numbers in the ELG decreased from 27initially to 12 in the fourth semester for several reasons. Some students decided to leave
: (3)Where: Cb = Energy Storage Capacity E (d) = Daily Energy Consumption (Wh) D (d) = Maximum Allowable Depth of Discharge (DOD) N = Number of days of storage required V = Voltage of the battery systemStep 2: Determine number of Batteries N (b)To calculate the number of batteries required, we take the ratio of ampere hour (Ah) of thesystem battery bank to the Ah for the battery voltage. (4)Step 3: Determine the amount of current delivery over a period of 1-hr using a 48VDC, 847.22Ah storage bank. (5)Step 4: Determine the battery
confident;” to have participants respondto 5 question items that asked about their: a) Preparedness to teach the solar PV technician course b) Preparedness to provide technicians with information on the importance of women’s involvement in energy transactions c) Preparedness to use inclusive teaching practices, foster community in the classroom, and help students make connections to the material d) Provided technicians in training with information on business opportunities related to PV and the entrepreneurship process e) Confidence to recruit women for the technician trainingOnly 41 participants out of 42 completed the survey. Table 7 shows the aggregate results of thereaction question items for the three
a. Stakeholder engagement and community involvement 10 b. Corporate responsibilities c. Management, leadership and social networking Sustainability and EE: Definitions, frameworks and 9 economic development Exam 2 Total hours 45 Table IV. Attainment of course objectives for “Social, Ethical and Global Issues in Electrical Engineering” Assessment Question