Specific heat capacity

The term ‘specific heat’ (or specific heat capacity) refers to the heat energy per unit mass (typically 1 kg) required to raise the temperature of a substance by one degree Celsius.

The formula for specific heat: q=mc(Tf-Ti)

The higher the specific heat capacity of a substance, the more energy is required to raise its temperature.

Specific heat capacity (c) in J (joules) / kg °C can be calculated as:

c = E/m θ

Where:

• E is the energy transfer in J.
• m is the mass of the substances in kg.
• θ is the temperature change in °C.

Some examples of the specific heat capacities of different substances are listed below:

• Aluminum 902 J/kg°C
• Copper 385 J/kg°C
• Gold 129 J/kg°C
• Iron 450 J/kg°C
• Lead 128 J/kg°C
• NaCl 864 J/kg°C
• Oxygen 918 J/kg°C
• Water 4181 J/kg°C
• Brick / block: 840 J/kg°C
• Concrete: 880 J/kg°C
• Marble: 880 J/kg°C
• Steel: 420 J/kg°C
• Timber: 1200 J/kg°C

Specific heat capacity is one of the properties that contributes to the thermal mass of a material, that is, how much heat it can store. Water, which has a very high specific heat capacity, is very effective at storing heat.

[edit] Related articles on Designing Buildings Wiki

• Dry bulb temperature.
• g-value.
• Heat capacity.
• Heat transfer.
• Insulation.
• k-value.
• Latent heat.
• Mass transfer.
• Refrigeration.
• Sensible heat.
• Temperature
• Thermal admittance.
• Thermal comfort.
• Thermal indices.
• Thermal mass.
• Thermal optical properties.
• U-value.
• Wet-bulb temperature.