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材料的比熱容

材料的比熱容

specificheatcapacity計算器數據表

Overview

Specific heat capacity (cc) is the amount of heat required to raise the temperature of a unit mass by one degree. It is a fundamental thermodynamic property.

Key Formulas

Heat Transfer

Q=mcΔTQ = m c \Delta T

Heat required to change temperature.

Specific Heat at Constant Pressure

cp=(hT)pc_p = \left(\frac{\partial h}{\partial T}\right)_p

Enthalpy change per degree at constant pressure.

Specific Heat at Constant Volume

cv=(uT)vc_v = \left(\frac{\partial u}{\partial T}\right)_v

Internal energy change per degree at constant volume.

Variables

SymbolDescriptionUnit
QQHeat transferredJ
mmMasskg
ccSpecific heat capacityJ/(kg·K)
ΔT\Delta TTemperature changeK

Reference Data

9
Specific heat capacity of common substances at 25°C, 1 atm
Substance
c_p(J/(kg·K))
c_v(J/(kg·K))
γ = c_p/c_v
Air10057181.4
Helium519331161.67
Hydrogen14310101801.41
Nitrogen10407431.4
Oxygen9196591.4
CO₂8466571.29
Water (liquid)418641861
Ethanol244019301.13
Mercury1401401

來源: engineeringtoolbox.com

References