Energy Engineering Seminar: Jake Casselman (Hawaiʻi at Mānoa)

Beyond the Degree Day: Bridging Climate Science and Energy Systems Engineering The cooling degree day (CDD) has served as the standard climatological measure of building cooling demand for decades. It captures sensible temperature excess, while ignoring both the latent heat burden of humidity and the thermodynamic efficiency penalties that warmer outdoor conditions impose on cooling systems. As cooling becomes a dominant link between weather and grid stress, that omission increasingly matters. Here, we introduce efficiency-weighted cooling degree day (eCDD), which incorporates compressor perfo