Latent heat of vaporization

Insulation · The Basics · printed page 232 (PDF page 233)

Original page Sign in to save

Book index entries

Latent Heat of Vaporization Vaporization – Latent Heat of Insulation – the Basics

Text in the illustration

latent heat of vaporization is the name for the significant amount of heat required to change a liquid to a vapor (without changing its temperature)
additional energy required to convert liquid to vapor
liquid (212°F)
latent heat of vaporization
vapor
vapor (212°F)
additional energy given off when vapor turns to a liquid (no temperature change)

Generated explanation

The illustration presents two schematic equations explaining latent heat during liquid–vapor phase changes. In the upper equation, a container of liquid at 212°F plus added heat, symbolized by burning logs, produces vapor at 212°F. Upward arrows show vapor leaving the container. In the lower equation, vapor at 212°F loses energy as it becomes liquid at the same temperature. The annotations emphasize that these phase changes absorb or release energy without changing temperature; no building assembly or installation practice is depicted.

Related illustrations

1209

Latent heat of vaporization

· p. 211

Two diagrammatic equations illustrate heat transfer during liquid-to-vapor and vapor-to-liquid phase changes. The upper equation shows liquid at 212°F plus latent heat becoming vapor at 212°F, with an annotation relating

1202

Evaporator coil - collecting hot air inside the house

· p. 210

The illustration shows a finned evaporator coil absorbing heat from indoor air. Red arrows indicate house air at 75°F entering the coil, while blue arrows indicate cooled air at 55°F returning to the house through ductwo