Foundation Distinguished Professor (2016-Present)
University of Kansas
Department of Chemical and Petroleum Engineering

ME Capstone Project: KU Central Utility Plant Chiller Retrofit

The new central utility plant (CUP) at the University of Kansas has two 900 ton York chillers that will provide chilled water for cooling the new Integrated Science Building (ISB), Kansas Student Union and Central District. The chillers will initially operate using refrigerant R-134a (1,1,1,2-tetrafluoroethane). A mechanical engineering Capstone project led by Cade Albert, Chad Sevart, Michel Alhathal, Josh Seybert and Yong Hahn (shown standing in front of the chillers) and supervised by Prof. Mark Shiflett (Chemical Engineering) and Prof. Tom DeAgostino (Mechanical Engineering) are measuring the cooling capacity and energy efficiency of R-134a to determine the baseline chiller performance. Plans are to retrofit one of the chillers to a new lower global warming refrigerant in the Fall of 2018 to measure the differences in cooling capacity and energy efficiency relative to the R-134a baseline measurements.

Pictured Left to Right: Michel Alhathal, Chad Sevart, Cade Albert, Josh Seybert, Yong Hahn

New Thermodynamics Experiment for Undergraduate Chemical Engineering Lab
Dr. David Griffin, Prof. Mark Shiflett, Mr. George Whitmyre

VLE Experiment - 1
New Thermodynamics Experiment Module for CPE 616- Chemical Engineering Lab I

A new thermodynamics experiment was designed and constructed for the Fall, 2017 undergraduate Chemical Engineering Laboratory, C&PE 616.  Designing a VLE-based separation process requires information about the compositions of phases (vapor and liquid) as a function of temperature, pressure, and overall composition.  The objective of this experiment is to obtain data so that the students can predict the isobaric vapor-liquid equilibrium for a particular ternary mixture by measuring the VLE in the constituent binary mixtures. The students learn to operate four modified Swietoslawski ebulliometers which operate at ambient pressure for measuring the boiling temperature for pure component and mixtures to calculate activity coefficients near the limits of infinite dilution.

VLE Experiment 3
Swietoslawski ebulliometer

The infinite dilution activity coefficients, obtained by data regression, will be used in common activity coefficient models (NRTL, Wilson, Margules) to predict the activity coefficients over the whole concentration range, and then for the construction of binary phase diagrams. The predictive capabilities of the Regular Solution activity coefficient models will be tested for the binary systems and compared with known literature values. Based on these results, the students choose the best model for the prediction of the ternary VLE phase behavior.  Results from the isobaric experiment allow construction of useful x-y and T-x-y phase diagrams and solving a design problem which requires an isothermal or adiabatic flash calculation.  Students are also introduced to ASPEN Plus (version 10) process simulation software to perform flash calculations.  For a discussion of VLE phase diagrams, see S. I. Sandler, Chemical, Biochemical and Engineering Thermodynamics, 5th Ed., J. Wiley and Sons, 2017.

C&PE 626 Chemical Engineering Laboratory II  (Spring 2017)

New Kinetics Experiment – Iodination of Acetone – C&PE 616 Chemical Engineering Lab I.

C&PE 616 Chemical Engineering Laboratory I (Fall 2016)
Senior Lab, kinetics

ASPEN Plus® Tutorials
Taught ASPEN Plus® modeling using video presentations at the University of Kansas and University of Delaware. Video library includes: Hydrogenation of Benzene to Cyclohexane (KU), Hydrogenation of Benzene to Cyclohexane, Solids modeling, and Reactor modeling.

C&PE 661 Undergraduate Honors Research
Advise undergraduates in chemical engineering thermodynamic and reaction engineering experiments with my graduate and post-doctoral researchers

C&PE 651 Undergraduate Research
Advise undergraduates in chemical engineering thermodynamic and reaction engineering experiments with my graduate and post-doctoral researchers

Adjunct Professor (2011-2016)
University of Delaware
Department of Chemical and Biomolecular Engineering

CHEG 345 Chemical Engineering Laboratory I
Junior Lab, kinetics and vapor-liquid equilibria theory and experimentation, and safety

CHEG 445 Chemical Engineering Laboratory II
Senior Lab, distillation theory, operation of pilot-scale column, and process hazards analysis

CHEG 473/474 Junior/Senior undergraduate research
Advised 39 students during the past six years to: design new kinetics experiment for Junior lab, reactivate heat-exchanger experiment for Junior lab, upgrade pilot-scale distillation column from batch to continuous operation for Senior lab, create ASPEN tutorial videos for introductory course in ChE, measure friction and wear properties for bioderived and synthetic lubricants, and publish manuscripts.

UNIV 401/402 Undergraduate Thesis
Advised undergraduate thesis student, obtained departmental research funding, Project:  Friction and Wear Characteristics for  Bioderived Lubricants – Advantages versus Synthetic Lubricants.

CHEG 112 Material and Energy Balances
ASPEN modeling