A measure of the capacity of a material, such as insulation, to impede heat flow, with increasing values indicating a greater capacity.
[r(esistance) value.]
R-value
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Dictionary:
R-val·ue (är'văl'yū) |
n.
A measure of the capacity of a material, such as insulation, to impede heat flow, with increasing values indicating a greater capacity.
A measure of the capacity of a material, such as insulation, to impede heat flow, with increasing values indicating a greater capacity.
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| Real Estate Dictionary: R Value |
A measure of the heat conductivity of material. The higher the R value, the better the material serves as insulation from heat transfer. R value generally applies to insulating materials, roofs, exterior walls, and windows and doors.
Example: The walls in a building have an estimated R value of 20. Fiberglass insulation with an R value of 34 was installed in the walls to make the building more energy efficient.
| Architecture: R-value |
A measure of the thermal resistance of a material or component.
| Wikipedia: R-value |
R-value can refer to:
- Properties of materials:
- R-value (insulation), the efficiency of insulation
- R-value (soils), stability of soils and aggregates for pavement construction
- r-value, in computer science, a value that does not have an address in a computer language
- R-factor (crystallography), a measure of the agreement between the crystallographic model and the diffraction data
- In statistics, r (or r value) refers to the Pearson product-moment correlation coefficient, often called simply correlation coefficient
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| R (physics, electromagnetics, engineering) |
| R value (engineering) |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Real Estate Dictionary. Dictionary of Real Estate Terms. Copyright © 2004 by Barron's Educational Series, Inc. All rights reserved. Read more |
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| Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "R-value". Read more |
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Mentioned in
- RSI (engineering)
- R (physics, electromagnetics, engineering)
- R value (engineering)
- unvaluable
- relationship
- subharmonic function (mathematics)
- gry
- respiratory exchange ratio
- moment-generating function
- Newton's inequality (mathematics)
- Correlation Coefficient (R) (in accounting)
- U factor (engineering)
- overvalue
- electron radius (physics)
