Actual meaning of different heat transfer related terms

Thread starter mahaesh
Start date Oct 3, 2008
Tags

Heat Heat transfer Terms

In summary, conduction is the transfer of heat through direct contact, convection is the transfer of heat through the movement of a fluid, and radiation is the transfer of heat through electromagnetic waves. Insulation reduces heat transfer by trapping air particles. Heat is a form of energy transferred due to a difference in temperature, while temperature measures the average kinetic energy of particles. Heat transfer impacts Earth's climate through processes like convection, radiation, and conduction. Real-life examples of heat transfer include feeling the warmth of the sun (radiation), cooking on a stove (conduction), and using a heating pad (conduction).

Oct 3, 2008

mahaesh

Hi everyone
Can anybody give me the meaning of

1)Total surface heat flux
2)Surface heat transfer coeficient
3)wall function heat transfer coeficient

and difference between surface heat transfer coeficient and wall function heat transfer coeficient

Please......

Engineering news on Phys.org

Oct 9, 2008

pawan

college assignment? refer heat transfer book by CENGEL

1. What is the difference between conduction, convection, and radiation?

Conduction is the transfer of heat through direct contact between two objects or substances. Convection is the transfer of heat through the movement of a fluid, such as air or water. Radiation is the transfer of heat through electromagnetic waves.

2. How does insulation affect heat transfer?

Insulation works by reducing the flow of heat between two objects or environments. It does this by trapping air particles, which are poor conductors of heat, and preventing them from moving and transferring heat.

3. What is the difference between heat and temperature?

Heat is a form of energy that is transferred from one body to another due to a difference in temperature. Temperature, on the other hand, is a measure of the average kinetic energy of the particles in a substance.

4. How does heat transfer impact the Earth's climate?

The Earth's climate is largely affected by heat transfer through processes such as convection, radiation, and conduction. These processes play a crucial role in regulating the temperature of the Earth's atmosphere, oceans, and land, and can impact weather patterns and global climate change.

5. What are some real-life examples of heat transfer?

Some common examples of heat transfer include feeling the warmth of the sun on your skin (radiation), cooking food in a pan on a hot stove (conduction), and feeling the heat from a fire (convection). Other examples include using a heating pad to relieve muscle pain (conduction) and feeling the warmth of a blanket when you wrap it around you (convection).