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Glossary G-I

Term Symbol Unit
gaseous state    
geographic information system    
geostationary satellite    
glare    
glare, disability    
glare, discomfort    
glazing    
global horizontal irradiance Eeg W/m²
global solar radiation    
Greenwich    
ground albedo ρg 1
heat    
heat accumulation    
heat balance model    
heat capacity    
heat demand    
heat exchanger    
heat gain    
heat load    
heat loss (from a body)    
heat loss (from a building)    
heat pump    
heat recovery    
heat transmission    
heat transmission coefficient    
heating    
heating degree-days    
heating season    
humidifying/dehumidifying effect    
humidity    
HVAC    
hybrid solar heating system    
illuminance Ev lx
impermeable    
incident angle    
indirect cooling    
indirect gain    
indirect lighting    
induced draft flue system    
infiltration    
infrared radiation    
insulation material    
internal (heat) gains    
internal sources    
intrinsic heat    
irradiation    
irradiance Ee W/m²
isentropic    
ISO    
iso-illuminance curve; isolux curve or line    
isotropic