Chapter I: I Isovolume Process

I

iodine (element)

ICE

heat energy required to melt 1 kg/h:

• 0.0263 ton (refrigeration)

heat energy required to melt 1 kg/min:

• 4782 kg-cal/h

• 79.69 kg-cal/min

heat energy required to melt 1 lb/h:

• 143.44 Btu/h

• 2.39074 Btu/min

• 0.0119 ton (refrigeration)

latent heat: 144 Btu/lb

specific gravity: 0.913

specific weight: 57 lb/ft ³

ideal gas

See also gas, ideal.

IES

Illuminating Engineer's Society

ILLUMINATION

visible form of radiant energy; density of luminous flux falling on a surface measured in ft-cdl.

brightness: luminous intensity per unit area, reflected from a surface, measured in cd/in. ² or ft-L.

candela:candle *

candle: candle, standard unit for measurement of candlepower of a light source. A light source of 1 cd produces 12.57 lm, also 1 cd equals 1 lm/steradian.

candle/square centimeter equivalent: CANDLE/SQUARE CENTIMETER

candle/square foot equivalent: CANDLE/SQUARE FOOT

candle/square inch equivalent: CANDLE/SQUARE INCH

candle/square meter equivalent: CANDLE/SQUARE METER

candlepower: luminous intensity; amount of light flow produced by a light source in a specific direction, measured in candles. One candlepower equals 12.57 lm.

foot-candle: amount of light on a surface; measure of illumination equivalent to the illumination produced by light flux of 1 lm/ft ².

foot-candle equivalent: FOOT-CANDLE

foot-lambert: unit for measure of brightness of a surface emitting or reflecting light at a rate of 1 lm/ft ². Foot-lambert is a function of foot-candles of illumination projected and the reflectivity of the surface. A perfect...