Showing posts from December, 2013

Degree Days

Degree days is a term used to indicate the heating or cooling needed for any certain day. It is calculated fr…

Temperature Humidity index

The term "temperature humidity index" (THI) is a number which aims to establish the degree of disco…

Humidity Measurement (Hygrometer)

Relative humidity is measured by a hygrometer. A hygrometer consists of two identical thermometers. The bulb …

Saturated Vapor

The term "saturated vapor" identifies a condition of balance on an enclosed quantity of a vaporized…

Relative Humidity

As previously explained, relative humid­ity is the percentage of moisture contained in a sample of air compar…

Humidity

The word humidity as used on con­nection with refrigeration, air conditioning, and weather information refers…

Isothermal Expansion and Contraction

An isothermal condition is the expansion or contraction of a gas which occurs with­out a change in temperatur…

Adiabatic Expansion and Contraction

The term adiabatic refers to the process whereby a gas expands or contracts with­out any transfer of heat int…

Dalton's Law

Material Specific Heat      CP                CV  R            Air .............................…

Gas Law

Boyle’s Law and Charles' Law may be combined to solve true gas problems and the formula is as follows: Po…

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