Heat transfer is given by

Where,m is the mass,

C is the specific heat and

$\Delta$ T is the temperature difference in K.

There are three types of Heat transfer

- Conduction
- Convection
- Radiation.

Where, k is the thermal conductivity of the material,

A is the cross sectional area,

T_{Hot }is the higher temperature,

T_{Cold} is the cooler temperature,

t is the time taken,

d is the thickness of the material.

A is the cross sectional area,

T

T

t is the time taken,

d is the thickness of the material.

Heat transfer by Convection is given by

Where H

The Heat transfer by radiation is given by

Here $\sigma$ is the Stefan Boltzmann Constant.

Heat transfer is usually expressed in Joules. Heat transfer formula is used in problems to find the heat transfer taking place for any given material.

Related Calculators | |

Heat Transfer Calculator | Specific Heat Formula Calculator |

Heat Calculator | Heat Capacity Calculator |

Below are some problems on Heat transfer which may be helpful for you.

Thermal Conductivity of glass is 1.4 W/mK.

Thermal Conductivity of glass is 1.4 W/mK.

Initial temperature Tcold = 10

Final temperature THot = 20

Area A = 1m $\times$ 2m = 2 m

The Heat transfer Q = $\frac{k A(T_{Hot} - T_{Cold})}{d}$

= $\frac{1.4 W/mK \times 2 m^{2} \times 10^{o} C}{0.003 m}$

= 9333.33 W.

Specific heat of iron C = 0.45 kJ/kg K.

Given: Initial temperature T

Final temperature T

Mass of the body m = 2 kg,

The Heat lost is given by Q = m c $\Delta$ T

= 2 Kg $\times$ 0.45 kJ/kg K $\times$ 293 K

= 263.7 J.