Specific Density Of Air At Room Temperature

Isochoric specific heat c v is used for air in a constant volume isovolumetric or isometric closed system.

Specific density of air at room temperature.

At 70 degrees f and 14 696 psi the density of dry air is 0 074887 lbm ft 3. At 20 degrees c and 101 325 kpa the density of dry air is 1 2041 kg m 3. The iupac standard of temperature and pressure 0 degrees c and 100 kpa uses a dry air density of 1 2754 kg m 3. At sea level and at 15 c air has a density of approximately 1 225 kg m 3 0 001225 g cm 3 0 0023769 slug ft 3 0 0765 lbm ft 3 according to isa international standard atmosphere.

It also changes with variation in atmospheric pressure temperature and humidity at 1013 25 hpa abs and 15 c air has a density of approximately 1 225 kg m or 0 00237 slug ft about 1 1000th that of. If you change the air temperature humidity or the altitude and hence the pressure the air density will change too. Air density specific weight and thermal expansion coefficient at varying temperature and constant pressures online calculator figures and tables showing density specific weight and thermal expansion coefficient of air at temperatures ranging 100 to 1600 c 140 to 2900 f at atmospheric and higher pressure imperial and si units. It also changes with variation in temperature or humidity.

Specific heat c is the amount of heat required to change the temperature of a mass unit of a substance by one degree. Rho is the mass per unit volume of earth s atmosphere air density like air pressure decreases with increasing altitude. The density of air or atmospheric density denoted ρ greek. Air density like air pressure decreases with increasing altitude.

Isobaric specific heat c p is used for air in a constant pressure δp 0 system.