Yifeng Hu R&D Associate Staff Member Contact HUY1@ORNL.GOV All Publications A high efficiency rooftop air conditioning system using multi-speed compressors... Residential Integrated Heat Pump to Meet All the Home Comfort Needs Heating performance of a vapor compression heat pump cascaded with a thermoelectric heat pump Heating performance of a vapor compression heat pump cascaded with a thermoelectric heat pump Experimental Investigation on Heating Performance of a Cold Climate Thermoelectric-Assisted Heat Pump... System Modeling of Frost/Defrost Cycles in Heat Pumps Experimental Investigation on Cooling performance of A Thermoelectric Freezer Experimental insights into thermoelectric freezer systems: Feasibility and efficiency Experimental Study on Flow Condensation of Low Global Warming Potential Refrigerants in a Micro-fin Aluminum Tube In tube condensation of low global warming potential refrigerants in an axial micro-fin aluminum tube Key Links Curriculum Vitae Organizations Energy Science and Technology Directorate Buildings and Transportation Science Division Building Technologies Research Section Building Equipment Research Group User Facilities Building Technologies Research and Integration Center