PCM Integrated Space Heating and Cooling and Cryo-Electrohydrodynamic Dehydration System for Food Processing Applications

Wong, Rudy
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University of Guelph

Energy consumption rates have steadily increased in both the infrastructural and food production sectors for the past 2 decades. This thesis presents a unique thermal energy storage (TES) system and a cryo-electrohydrodynamic (C-EHD) dehydration system to provide ways to reduce today’s energy demand. The design, numerical simulation, development and analyses of both the TES and C-EHD systems are detailed in this thesis. A rotational thermal energy storage prototype was developed to store phase change material (PCM) in different orientations (0°, 45° and 90º) and analyze its performance during the charging and discharging processes to determine the thermally efficient orientation. A numerical model was produced using COMSOL Multiphysics® to examine the effect of C-EHD on the drying rate and energy consumption for different porous media. The main variables under investigation include, wind velocity, electrode configuration, applied voltage, and electrode gap. In addition, an experimental prototype was designed and developed for validation of the numerical simulation. The energy storage and release rates for space heating was 470.04 W and 414.57 W. The energy storage and release rates for space cooling was 527.15 W and 501.84 W. For the EHD experiment, it was determined that a wind velocity of 3.0 m/s produced the fastest evaporation rate of water from the porous media.

PCM, Orientations, TES, Charging, Discharging, Electrohydrodynamics, Dehydration, Corona, High Voltage, Thermal Energy Storage