Impact of Wind on Heat Loss
Dana Dorsett’s heat loss calculation using fuel usage and heating degree days seems simple and highly accurate for existing homes. However, I’ve seen comments that posit particularly windy days cause high levels of infiltration and high heat loss, which seems intuitive to me and I’d like to further understand. I’ve attached regressions of a 1930’s house in Zone 4: Daily therms over 2 years are extremely well (R^2 = .94) predicted by knowing the heating degree days. Adding average wind speed adds a little of accuracy, but ~3,000 BTUs per wind MPH over the course of a whole day seems minor. My questions are: are there data or studies that show that wind speed matters to heat loss? If so, under what conditions does it matter? What impacts the magnitude?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part