What is baffle pitch?
The spacing between segmental baffles is called the baffle pitch. The baffle pitch and the baffle cut determine the cross flow velocity and hence the rate of heat transfer and the pressure drop.
What is the function of baffle?
Baffles serve two functions: Most importantly, they support the tubes in the proper position during assembly and operation and prevent vibration of the tubes caused by flow-induced eddies, and secondly, they guide the shell-side flow back and forth across the tube field, increasing the velocity and the heat transfer …
What are types of baffle?
Types of baffles
- Longitudinal Flow Baffles (used in a two-pass shell)
- Impingement Baffles (used for protecting bundle when entrance velocity is high)
- Orifice Baffles.
- Single segmental.
- Double segmental.
- Support/Blanking baffles.
- Deresonating (detuning) baffles used to reduce tube vibration.
What does Square pitch mean?
The most common design is that which is referred to as “square pitch”. The square pitch propeller has a pitch ratio of 1:1 which means for each rotation fluid is moved forward by an amount equal to its diameter.
What is baffle in bioreactor?
Baffles are obstructing vertical arranged vanes or elongated plates inside the vessel needed to stop the radial swirl inside the fermenter and convert the rotational flow to axial mixing.
What is the role of baffles in fermenter?
What is heat exchanger pitch?
Pitch is the shortest center-to-center distance between adjacent tubes. Commonly 1.25 to 1.5 time the tube diameter. Clearance is the distance between tubes. It should be larger than 25% of the tube diameter. Triangular or square arrangement of tubes are quite common.
What is a baffled fuel tank?
The baffle plates are basically the flow-directing or obstructing panels inside a fuel tank that direct the flow in the fuel tank and help in keeping the fuel from sloshing around during maneuvering.
What is a baffle in construction?
A sound baffle is a construction or device which reduces the strength (level) of airborne sound. Sound baffles are also applied to walls and ceilings in building interiors to absorb sound energy and thus lessen reverberation.
What is Baffle pitch and baffle cut in heat exchanger?
The baffle pitch and baffle cut are selected during the heat exchanger design to yield the highest fluid velocity and heat transfer rate while respecting the allowable pressure drop. The orientation of the baffle cut is important for heat exchanger installed horizontally.
What is a segmental baffle pitch?
The spacing between segmental baffles is called the baffle pitch. The baffle pitch and the baffle cut determine the cross flow velocity and hence the rate of heat transfer and the pressure drop.
What is the meaning of the word baffled?
baffled; baffling ˈba-f(ə-)liŋ . (Entry 1 of 2) transitive verb. 1 : to defeat or check (someone) by confusing or puzzling : to confuse or frustrate completely : disconcert Her behavior baffled her parents. 2 : to check or break the force or flow of by or as if by a baffle (see baffle entry 2) baffle the steam. baffle.
What is the function of a baffle in a tube?
Baffles serve three functions: 1) support the tube; 2) maintain the tube spacing; and 3) direct the flow of fluid in the desired pattern through the shell side. A segment, called the baffle cut, is cut away to permit the fluid to flow parallel to the tube axis as it flows from one baffle space to another.