The main types of fins used in compact heat exchangers include plane, wavy and rectangular fins . The wavy fin and tube arrangement is famous plate fin and tube heat exchanger where it is used in applications that are constricted by high resistance to thermal on the air side of the heat exchanger [4].
What are the different types of fins in heat transfer?
- Constant Area Straight Fin.
- Variable Area Straight Fin.
- Pin Fin.
- Annular Fin.
What are the different types of fin?
- Fish Fins. Fins are one of the most distinctive features of a fish and appear in several different forms. ...
- Dorsal Fins. ...
- Tail Fin or Caudal fin. ...
- Ventral or Pelvic Fins. ...
- Anal Fin. ...
- Pectoral Fin. ...
- Finlets or Scutes.
Where are fins used in heat transfer?
Uses. Fins are most commonly used in heat exchanging devices such as radiators in cars , computer CPU heatsinks, and heat exchangers in power plants. They are also used in newer technology such as hydrogen fuel cells.
Why fins are used in heat exchanger?
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.
What are the 2 types of fin fish?
- Dorsal fins are found on the back of the fish. ...
- Caudal fins are also known as tail fins. ...
- Anal fins are on the ventral (bottom) surface of the fish, behind the anus. ...
- Pectoral fins are located on each side of the fish, around where the head meets the body.
What are the two types of fin fish?
Most fish have two kinds of fins: median and paired . Median fins are single fins that run down the midline of the body. The dorsal fin is a median fin located on the dorsal side of the fish. The anal fin and caudal fin are also median fins.
What are the functions of fins?
Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids . Fins are also used to increase surface areas for heat transfer purposes, or simply as ornamentation. Fins first evolved on fish as a means of locomotion.
What are dimensionless numbers in heat transfer?
- Reynolds Number.
- Nusselt Number.
- Prandtl Number.
- Grashof Number.
- Rayleigh Number.
Which has high thermal conductivity?
| Common metals ranked by thermal conductivity | Rank Metal Thermal Conductivity [BTU/(hr·ft⋅°F)] | 1 Copper 223 | 2 Aluminum 118 | 3 Brass 64 |
|---|
Which material is used for fins?
Most commonly used material for manufacturing of fins is aluminum alloy . Now we are replacing present aluminum alloy with Aluminum alloy 6063 and Aluminum alloy 7068.
What makes a good fin heat transfer?
Typically, the fin material has a high thermal conductivity . The fin is exposed to a flowing fluid, which cools or heats it, with the high thermal conductivity allowing increased heat being conducted from the wall through the fin.
What is M in heat transfer?
Unsteady state heat transfer
we arrive at a general expression for the temperature change: ... The last term m is the relationship between the thermal conductivity (k) and the overall heat transfer coefficient (h) .
Who are the fins?
Katelyn Jayne The Fins are described in more detail in book one. However they are the guardians/helpers of Jane , to keep the secret of Storyton Hall.
What is profile area of Fin?
The fin profile is defined according to variation of the fin thickness along its extended length . For example, the cross-section area of the fin may vary as where is the width of the fin, is the fin thickness along the length.
What is effective fin?
Efficiency of fin (ηfin):
The efficiency of a fin is defined as the ratio of the actual heat transfer from the fin to that the heat that would be dissipated if whole surface of the fin is maintained at base temperature .
