Emissivity, Emittance, Green-Built, North Texas, Glossary, Central Texas, Defines, North Central Texas, Green Buiding, Green Homes, Green Builder, Energy-Efficient Houses
Emissivity is a thermodynamics term. It is The ability of a surface to emit radiant energy compared to that of a black body at the same temperature and with the same area. In simpler words, it is the ability of a material to hold or release heat.
Don’t confuse emissivity with conductivity, however, which is the ability of heat to transfer through a material. Metallic materials have high conductivity but low emissivity when left uncoated.
For example, three baked potatoes are wrapped in three different materials: aluminum foil, coated aluminum foil, and paper. Both the paper and the coated aluminum foil have high emittance and the potatoes cool more quickly than the potato wrapped in aluminum foil.
Back to glossary
Do you need an energy consultant, energy auditor, green builder, or green remodeler in North Central Texas or the Dallas-Fort Worth area? Contact Terry JensenFrugal Energy, LLC 972 251-1532 or 817 443-2553
Note: The opinions expressedherein are exclusively those of the writers or other participants and do not necessarily reflect theposition of CyberParent,LLC. They are not intended to take the place of advice of ahealth, legal, or other professional whose expertise you might need to seek.This website explains green building and green remodeling for a climate zonecomparable to North Central Texas or Dallas-Fort Worth, Texas, It isimportant to hire a green builder and an energy consultant who are experts inenergy-efficient building in your climate zone and who use the most up-to-dategreen building information.