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  Energy Terms

 
  Addition
Extension of or increase in conditioned floor area and volume of a building, which can be new construction or adding space conditioning to an existing space

Air Change
The replacement of a quantity of air in a space within a given period of time, typically expressed as air changes per hour. If a building has one air change per hour, this is equivalent to all of the air in the building being replaced in a one-hour period

Alteration
Any change to a building's water-heating system, space-conditioning system, lighting system, or envelope that is not an addition

ASHRAE
American Society of Heating, Refrigerating, and Air-conditioning Engineers

CEC - California Energy Commission
The state agency responsible for energy policy

Climate Zone [ California Building Climate Zone Map ]
A geographical area in the state that has particular weather patterns. These zones are used to determine the type of building standards that are required by law

Conditioned Floor Area (CFA)
Floor area (in square feet) of enclosed conditioned space on all floors of a building, as measured at the floor level of the exterior surfaces of exterior walls enclosing the conditioned space

Conditioned Space
Space in a building that is either directly conditioned or indirectly conditioned

Conditioned Space, Directly
An enclosed space that is provided with wood heating, is provided with mechanical heating that has a capacity exceeding 10 Btu/hr-ft²), or is provided with mechanical cooling that has a capacity exceeding 5 Btu/hr-ft², unless the space-conditioning system is designed for a process space

Conditioned Space, Indirectly
An enclosed space, including, but not limited to, unconditioned volume in atria, that (1) is not directly conditioned space; and (2) either (a) has a thermal transmittance area product (UA) to directly conditioned space exceeding that to the outdoors or to unconditioned space and does not have fixed vents or openings to the outdoors or to unconditioned space, or (b) is a space through which air from directly conditioned spaces is transferred at a rate exceeding three air changes per hour

Fenestration
In simplest terms, windows or glass doors. Technically fenestration is described as any transparent or translucent material plus any sash, frame, mullion or divider. This includes windows, sliding glass doors, French doors, skylights, curtain walls and garden windows

Heating, Ventilating and Air Conditioning (HVAC)
A system that provides heating, ventilation and/or cooling within or associated with a building

HVAC Load Calculations
HVAC Load Calculations is a heating and cooling loads summary, calculated using the ASHRAE method. Its useful for sizing HVAC equipment and required for any new HVAC system

Low-Rise Residential Building
All low-rise residential occupancies including single family homes, duplexes, garden apartments and other housing types with three or fewer habitable stories:
All single family dwellings of any number of stories (Group R-3)
All duplex (two-dwelling) buildings of any number of stories (Group R-3)
All multifamily buildings with three or fewer habitable stories (Groups R-1 and R-2)
Additions and alterations to all of the above buildings

Non-Residential Building
Any building which is heated or cooled in its interior, and is of an occupancy type other than Type H, I, or J, as defined in the Uniform Building Code, 1973 edition, as adopted by the International Conference of Building Officials

 
     
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