What are different types of fins?
Types of Fins:
- Longitudinal fin.
- Radial fin.
- Pin fin. (a) Longitudinal fin – Rectangular profile. (b) Longitudinal fin – Rectangular profile. (c) Longitudinal fin – Trapezoidal profile. (d) Longitudinal fin – Concave parabolic. longitudinal fin. (e) Radial fin – Rectangular profile. (f) Radial fin – Triangular profile. Radial fin.
Where are fins used in heat transfer?
Fins are thus used whenever the available surface area is found insufficient to transfer required quantity of heat with available temperature gradient and heat transfer coefficient. In the case of fins the direction of heat transfer by convection is perpendicular to the direction of conduction heat flow.
Why do fins increase heat transfer?
Fins are extensions on exterior surfaces of objects that increase the rate of heat transfer to or from the object by increasing convection. This is achieved by increasing the surface area of the body, which in turn increases the heat transfer rate by a sufficient degree.
Which is not a mode of heat transfer?
Electricity
What are the three types of heat transfer and examples?
The first is conduction, which occurs in solids or fluids that are at rest, such as this metal bar. The second form of heat transfer is convection, which occurs in liquids or gases that are in motion. And the third form of heat transfer is radiation, which takes place with no material carrier.
What is the fastest mode of heat transfer?
Radiation
Which material can heat readily pass through?
Answer: The materials which allow heat to pass through them easily are. conductors of heat. For examples,aluminum, iron and copper. The materials which do not allow heat to pass through them easily are poor conductors of heat such as plastic and wood.
Which among the materials do not allow the heat to flow?
insulators
Which material does not allow heat to pass through easily *?
Which object is a good insulator?
Plastic, rubber, wood, and ceramics are good insulators. These are often used to make kitchen utensils, such as saucepan handles, to stop heat from flowing up to burn the cook’s hand. Plastic coating is also used to cover most electrical wires in appliances. Air is also a good insulator of heat.
What is the best heat insulator?
Polystyrene and plastic foam are both used as insulators as they have small air bubbles trapped inside them. This makes them very good insulators because heat energy can’t flow through them.
What is the most efficient insulation?
Spray foam insulation is the most energy-efficient insulation to create an air barrier in the attic. Certain spray foams can expand up to 100 times its original size, so it fills all of the nooks and crannies in the attic.
What is the best type of insulation?
The best types of home attic insulation are open cell spray foam, fiberglass, and cellulose.
- Cellulose is the oldest insulation material used for not only the attic but other areas of the home as well.
- Fiberglass is another traditional insulation material that consists of extremely fine glass fibers.