Units
The conversion between SI and US units of R-value is 1 h·ft²·°F/Btu = 0.176110 K·m²/W, or 1 K·m²/W = 5.678263 h·ft²·°F/Btu.
More simply, R-values may be converted from SI to US units through the following, where RSI is the given unit in metric units:
- R-value (US) = RSI × 5.678263337
Or converted from US units to SI units, where R-value is given in imperial units:
- RSI (SI) = R-value × 0.1761101838
To disambiguate between the two, some authors use the abbreviation "RSI" for the SI definition .
Read more about this topic: R-value (insulation)
Famous quotes containing the word units:
“Even in harmonious families there is this double life: the group life, which is the one we can observe in our neighbour’s household, and, underneath, another—secret and passionate and intense—which is the real life that stamps the faces and gives character to the voices of our friends. Always in his mind each member of these social units is escaping, running away, trying to break the net which circumstances and his own affections have woven about him.”
—Willa Cather (1873–1947)