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Green Terms Defined Summary 2015
Green Terms Defined Summary 2015
Green Terms Defined Summary 2015
2012 International Energy Conservation Code: Minimum energy code standards adopted by the Commonwealth of Virginia
Air Changes per Hour (ACH): the measure how many times the air within a defined space is replaced.
ASHRAE 90.1: a standard in the US that provides minimum requirements for energy-efficient designs for buildings except for low-rise residential…
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Green Term Defined: Vapor Barrier
Green Term Defined: Vapor Barrier
Green Term Defined: Vapor Barrier
A vapor barrier is a barrier that reduces the rate that water vapor can move through a material. Also known as vapor retarders, they are most commonly plastics or foil sheets. Vapor barriers per the building code have a permeability of 1 perm or less.
There are three categories of vapor retarding materials: Impermeable, Semi-Permeable, and Permeable. Impermeab…
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Green Term Defined: Natural Ventilation
Green Term Defined: Natural Ventilation
Green Term Defined: Natural Ventilation
Natural Ventilation is the process of supplying and removing air by natural means from building spaces by using windows, doors, solar chimneys, and non-powered ventilators.
solar chimney
Most of us spend about 90% of our time inside of a building. As a result, the indoor air quality is critical to our health, productivity, and comfort. Scientific studies…
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Green Term Defined: ASHRAE 90.1
Green Term Defined: ASHRAE 90.1
Green Term Defined: ASHRAE 90.1
ASHRAE 90.1 is a standard in the US that provides minimum requirements for energy-efficient designs for buildings except for low-rise residential buildings. The standard was first created in 1975. It has since been updated on a regular basis in 2004, 2007, 2010, and 2013.
There are two paths for compliance with ASHRAE 90.1, both the prescriptive path and…
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Green Term Defined: Light Shelf
Green Term Defined: Light Shelf
Green Term Defined: Light Shelf
A light shelf is a horizontal overhanging element located above the eye-level and typically having a highly reflective upper surface. Sunlight hits the top of the light shelf and bounces inside of the structure hitting the ceiling. This brings light deeper into the structure that reduces energy usage for lighting and glare.
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Green Term Defined: Insulating Curtains
Green Term Defined: Insulating Curtains
Green Term Defined: Insulating Curtains
Thermal curtains have a lining that resists temperature change and are heavy enough to stop air flow. These curtains will help reduce the amount of energy needed to keep a space comfortable. They come in many styles, colors, and textures and can be used in almost any application.
image from thermalwindowcurtains.com
Windows, even the best on the market, are…
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Green Term Defined: Heat Flow
Green Term Defined: Heat Flow
Green Term Defined: Heat Flow
When two objects with different temperatures come together, energy will be transferred from the object with a higher temperature to that with the lower temperature. The objects exchange thermal energy until each have reached the same temperature or equilibrium. The basic means to transfer heat include Conduction, Convection, and Radiation.
Conduction– the flow of…
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Green Term Defined: Ceramic Tile
Green Term Defined: Ceramic Tile
Green Term Defined: Ceramic Tile
Ceramic tile is made from clay that has been permanently hardened by heat, often having a decorative glaze. Ceramic is a word derived from the ancient Greek “keramos” meaning “of fired clay.”
A properly installed ceramic tile floor will last for a very long time. Ceramic tile floors are aging-in-place friendly helping extend the usable life of a home.Ceramic tile…
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