Summary

New research led by atmospheric scientists at the University of Hawai'i (UH) at Mānoa found that the century-old yardstick used across many industries to estimate air-conditioning and refrigeration energy demand—called cooling degree days—is missing something fundamental. Their study, published in Nature Communications , reports a new, physics-based version of the metric—effective cooling degree days—that captures how temperature and humidity together affect the actual work a cooling system must do.

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