Psychometrics and Combustion Concepts

These flashcards cover key vocabulary terms and definitions from the lecture notes on psychometrics and combustion concepts.

Moist Air

A mixture of dry air and water vapor, treated as if the dry air were a pure component.

Wet-Bulb Temperature

The temperature read from a thermometer with a moistened bulb, indicating cooling effects of evaporation.

Dew-Point Temperature

The temperature at which air becomes saturated and water vapor condenses into dew.

Saturated Air

A mixture of dry air and saturated water vapor.

Humidity Ratio

The ratio of the mass of water vapor to the mass of dry air, represented as ω (omega).

Dry-Bulb Temperature

The temperature measured by a thermometer placed in the air mixture.

Relative Humidity

The ratio of the current amount of water vapor in the air to the maximum amount of water vapor the air can hold at that temperature, often expressed as a percentage.

Complete Combustion

When all carbon in the fuel is burned to CO2, all hydrogen to H2O, and all sulfur to SO2.

Theoretical Air

The minimum amount of air required to supply sufficient oxygen for the complete combustion of all elements in the fuel.

Excess Air

The unburned air present when more than the theoretical amount of air is supplied for combustion.

Lower Heating Value

The heating value obtained when water formed by combustion is a vapor.

Higher Heating Value

The heating value obtained when all water formed by combustion is in liquid form.

Enthalpy of Formation

The energy change when a compound is formed from its elements under standard conditions.

Adiabatic Flame Temperature

The temperature achieved by combustion products under adiabatic conditions.

Chemical Exergy

The maximum theoretical work that could be produced by a chemical system.

Evaporative Cooling

A cooling process where warm air passes through wet media causing evaporation and absorption of heat.

Air-Fuel Ratio

The ratio of the amount of air used in a reaction compared to the amount of fuel.