What is the volumetric heat capacity of air?
0.0012
3.7. 6 Typical values of volumetric heat capacity
| Material | Volumetric heat capacity, ρ c p [MJ/(m3 °C)] |
|---|---|
| Dry | |
| Steel | 3.12 |
| Water | 4.186 |
| Air | 0.0012 |
How do you calculate volumetric heat capacity?
The SI unit of volumetric heat capacity is joule per kelvin per cubic meter, J⋅K−1⋅m−3. The volumetric heat capacity can also be expressed as the specific heat capacity (heat capacity per unit of mass, in J⋅K−1⋅kg−1) times the density of the substance (in kg/L, or g/mL).
How many BTU does it take to heat a cubic foot of air?
One BTU will raise temperature 1 degree per 55 cubic feet, so divide by 55 (720,000/55).
How do you calculate heat capacity of air?
The nominal values used for air at 300 K are CP = 1.00 kJ/kg. K, Cv = 0.718 kJ/kg. K,, and k = 1.4.
What is the specific heat of air?
1.005 kJ/kg⋅K .
At 300 K (27oC) , the specific heat of air is 1.005 kJ/kg⋅K .
What is the heat capacity of the atmosphere?
The specific heat of air is about 1158 J/(kg*C) while the specific heat of seawater is about 3850 J/(kg*C), where a Joule is a standard measurement of energy. We can see that air has a specific heat a little more than 3x smaller than that of water.
What is the volumetric heat capacity of ground?
Volumetric heat capacity of the ground is in the order of 1.3–2.8 MJ/m 3 K for unconsolidated ground material and 1.8–3 MJ/m 3 K for solid rock. In comparison, volumetric heat capacity of water is 4.2 MJ/m 3 K.
How much heat does 1.08 BTU of heat take?
It takes 0.24 BTU of heat to change the temperature of one pound of air by one degree F. The 1.08 factor also contains the specific density of air (0.075 pounds per cubic foot).
What is the specific heat capacity ( C V ) of air?
Specific heat capacity (C v) air at 0°C and 1 bara: 0.7171 kJ/kgK = 0.17128 Btu(IT)/(lb m °F) or kcal/(kg K) Thermal conductivity at 0°C and 1 bara: 24.35 mW/(m K) = 0.02094 kcal(IT)/(h m K) = 0.01407 Btu(IT)/(h ft °F)
How much heat does one pound of air have?
This number includes the specific heat (Cp) of air (0.24 BTU per pound per degree Fahrenheit). It takes 0.24 BTU of heat to change the temperature of one pound of air by one degree F. The 1.08 factor also contains the specific density of air (0.075 pounds per cubic foot).
