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ARE - BS - Enviro
ARE - BS
| Term | Definition |
|---|---|
| Latent Heat | Heat required to convert a solid into a liquid or vapor, or a liquid into a vapor, without change in temperature, given in BTU |
| Sensible Heat | Amount of energy released or absorbed by a chemical substance during a change of temperature, changes the temperature but not the state, given in BTU |
| Relative Humidity | Ratio of moisture content of the air to the max possible moisture content at the same temperature |
| Radiation | The transfer of heat between surfaces that are not in direct contact |
| Conduction | The transfer of heat between two objects that are in direct contact |
| Convection | The transfer of heat that requires a fluid medium like air to transfer |
| Evaporation | Liquid is absorbed into the air as latent heat |
| Degree Day (DD) | The average yearly difference between the indoor temperature and outdoor temperature. |
| Design Day | Used to design and size a heating system that determines the day cooler than 98% of all days in the year experienced in a particular climate |
| Dry Bulb Temperature | Runs vertically on a psychrometric chart. Typical temperature measure with a standard thermometer |
| Wet Bulb Temperature | Measured with a sling psychrometer. The lowest temperature that can be reached under current ambient conditions by the evaporation of water only, given in degrees farenheit |
| Dew Point | The temperature at which water vapor starts to condense out of the air |
| Mean Radiant Temperature | Average radiant temperature of your surroundings and is independent of air temperature |
| Solar Heat Gain Coefficient (SHGC) | Ratio of solar heat gain through fenestration to the total solar radiation incident (falling upon/striking) on the glazing (0.0-0.87) |
| Shading Coefficient | Ratio of solar heat gain through a glazing product to the solar heat gain through an unshaded 1/8" thick clear double strength glass under the same set of conditions |
| Mass Walls | Thick walls placed in sunlight, behind a large window or glass skin. |
| Trombe Walls | Mass walls + convective loop |
| Water Walls | Tank or collection of large vertical tubes that are filled with water and put by a window, allowing some light to get into the space |
| Indirect Gain Space | Heated by reflected sunlight or warm air in the room |
| Sun Spaces/Rooms | Isolated thermal storage room |
Created by:
skbehm
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