Katheryn Yoder M.S. Graduate Student Mechanical Engineering Room: 1327 ERB Email: keyoder@wisc.edu Hometown: Phoenixville, PA Thesis: Investigating switch-bed regenerators in Supercritical CO2 Brayton Cycles.

Motivation The demand for clean, renewable energy is increasing The supercritical CO2 (S-CO2) Brayton cycle can use smaller turbomachinery to achieve the same thermal efficiencies as the Rankine cycle, but it requires some form of heat regeneration to be a feasible alternative. The regenerator is typically more efficient then the recuperator, but there has been little investigation into the use of a regenerator with a supercritical working fluid.

Goals and Objectives To examine the heat regeneration of a closed S-CO2 Brayton cycle To investigate the use of a switch-bed regenerator for heat regeneration in replace of a standard recuperator To optimize the design of the regenerator, including parameters such as blow time, matrix porosity, and bed size. 3

Switch-Bed Regenerator Printed-Circuit Heat Exchanger (Recuperator) heatric.com www.thermopedia.com.