Stephen Caskey Email & Phone Number

Denver, Co, Us

Nedre Vats, No

Thornton, Colorado, Us

- Writing technical proposals for government SBIR/STTR grants - Positive displacement modeling to characterize and size new applications for scrolls- Project and technical management of thermal systems projects; single stage and two-stage oil-free vapor compression cycles for aerospace applications, small and large scale Organic Rankine Cycle systems for waste heat recovery- Apply oil-free scroll compressors, expanders, or vacuum pumps to address complex requirements, reduced scale desalination high-pressure brine energy recovery, abrasive and acid tolerant lunar oxygen ISRU air lock chamber vapor collection, and submersible decompression minimizing time to reach sea level pressure at water depth- Design experimental plan and data analysis to document prototype hardware performance- Model, develop a bill of materials around required specifications, and assemble delivered hardware to build three hot-gas bypass test stands to accelerate the performance map of oil-free, refrigerant scroll compressors- Generate and run project updates (weekly/biweekly/quarterly/final technical reports and presentations) for program monitors- Run a small team of 2-3 employees to identify government topics suitable for oil-free scroll technology, apply thermodynamic modeling principles for suction volume sizing, develop 6-month, 9-month, 24-month work plans to - Executed four parabolic flights to collect zero- and microgravity data on oil-free vapor compression cycle refrigerator for cold food storage in space to support long-term human space exploration missions

West Lafayette, In, Us

PhD Graduate Research Assistant• Evaluated waste heat availability in EES of five, major household appliances by heating different volumes of stored water• Developed physical Modelica models capturing thermal interaction between four appliances and stratified water storage tank • Applied Dymola results of the integrated appliance system as selection criteria to design a bench top test stand • Operated integrated appliance test stand to collect cycle data capturing individual appliance impact from thermal integration• Processed raw data in Python for calculations of 2nd law efficiencies using fluid property functions • Compared predicted appliance energy saving to experimental data for tuning of Modelica assumptions • Executed parametric study on tuned Modelica model for recommended test stand improvements and ideal system savingsReNEWW House Student Manager • Support on-site activities of ReNEWW (Retrofitted Net-zero Energy Water and Waste) House Project • Instrumented single-family home with over 100 sensor channels to quantify thermal comfort and energy, water consumption• Assessed the reduction of heating energy by the deep-energy retrofit with Python script processing 1-sec, monthly data files• Collaborated on the design of a potable, rainwater collection and treatment system to offset usage of city water• Designed new piping connection between solar-thermal storage tanks for snow melting in winter, improved PV in summer

West Lafayette, In, Us

Completed a Masters Degree in Mechanical Engineering researching two-stage air-source heat pumps with economizing for application in cold climates.

Built experimental set-up to collect data from different heat exchanger designs to generate steam for small-scale power productionSized and installed a hydronic system for heating a dentist officeCalculated thermal mass for a building constructed of autoclaved aerated concrete (AAC)

Doctor Of Philosophy (Phd), Mechanical Engineering

Master Of Science In Mechanical Engineering (M.S.M.E), Mechanical Engineering

Bachelor Of Science, Mechanical Engineering