Differentiate between convection conduction . please explain me
Answers
Explanation:
In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.
Answer:
What is the difference between conduction and convection? Conduction is the transfer of heat by direct contact; requires a solid. Convection is the transfer of heat in a fluid; can be a liquid or a gas. Both require matter.
Explanation:
Conduction :
Conduction :1} It is the transfer of heat by direct contact.
Conduction :1} It is the transfer of heat by direct contact.2) The reason for heat transfer is temperature difference.
Conduction :1} It is the transfer of heat by direct contact.2) The reason for heat transfer is temperature difference.Convention:
Conduction :1} It is the transfer of heat by direct contact.2) The reason for heat transfer is temperature difference.Convention:1) It involves the heat movement by actual motion of the matter.
Conduction :1} It is the transfer of heat by direct contact.2) The reason for heat transfer is temperature difference.Convention:1) It involves the heat movement by actual motion of the matter.2) This process takes place due to difference in densities.
The change of energy between two systems (bodies) due to their different temperatures is called heat transfer. The heat transfer from one to the other body takes place spontaneously, from the warmer (higher temperature) to the colder body (lower temperature). If there are no other causes, the state of the observed systems will change until heat balance is established. In principle, there are three modes of heat transfer: conduction, convection and radiation.
What is Conduction?
What is Conduction?Heat conduction is a way of heat movement that is characteristic for solid materials, although it appears (but with negligible intensity) in fluids as well. This means that conduction is a process of heat transfer through a medium without transport of mass. When there is a temperature difference between different parts of a system, a heat transfer takes place through which the energy passes from the area (body) with a higher temperature into the area with the lower temperature range. Energy is transmitted from particle to particle, i.e. heat moves from one end to the other end, while the substance (system, body) is idle. Conduction takes place in homogeneous non-conductive hard bodies, and it is done by transmitting the heat from one particle to other, without any apparent movement. Similarly, the same happens in a homogeneous, translucent hard body, such as glass and quartz, while some of the heat is also carried out with radiation. According to the molecular kinetics theory, this method of heat transmitting is done by collision of molecules. Molecules in the warmer body have higher speed, and when clashed, their velocity (temperature) decreases, while the slower (colder) molecules get faster. The characteristic of the material that signifies the intensity of the heat movement through the material is called thermal conductivity coefficient – λ (W / m ° C) and it is a measure of how good heat conductor a material is, and it affects the heat transfer velocity. The amount of heat Q that will be passed by conduction through the homogeneous plate can be calculated according to the following formula: