Search results
Results from the WOW.Com Content Network
In shell-and-tube heat exchangers there is a potential for a tube to rupture and for high pressure (HP) fluid to enter and over-pressurise the low pressure (LP) side of the heat exchanger. [8] The usual configuration of exchangers is for the HP fluid to be in the tubes and for LP water, cooling or heating media to be on the shell side.
Increased heat transfer due to the secondary flow is not significant in turbulent state constituting less than 10% for /. Furthermore, augmentation created by the use of helically coiled tubes due to the secondary flow is usually employed only for situations where the flow is in the laminar state.
A shell and tube heat exchanger Shell and tube heat exchanger. Shell and tube heat exchangers consist of a series of tubes which contain fluid that must be either heated or cooled. A second fluid runs over the tubes that are being heated or cooled so that it can either provide the heat or absorb the heat required.
Baffles are flow-directing or obstructing vanes or panels used to direct a flow of liquid or gas. It is used in some household stoves [1] and in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers. Baffles are an integral part of the shell and tube heat exchanger design.
The Tubular Exchanger Manufacturers Association (also known as TEMA) is an association of fabricators of shell and tube type heat exchangers. [1] TEMA has established and maintains a set of construction standards for heat exchangers, known as the TEMA Standard. [ 2 ]
It uses approximately double the length of pipe of 35 mm diameter, e.g., around 80 m compared to an EAHX of 40 m. A heat exchanger coil is placed before the air inlet of the heat recovery ventilator. Typically a brine liquid (heavily salted water) is used as the heat exchanger fluid.
Kettle reboilers( Image 1) are simple and reliable heat exchangers, often used in distillation columns. They function similarly to shell-and-tube heat exchangers but are specifically designed to provide a stable liquid level and maintain natural circulation. In this design, steam flows through a tube bundle, condenses, and exits as condensate.
Typically, well-designed and operated Imhoff tanks are expected to remove suspended solids with an efficiency between 50-70%. [4] Effluent coming out from Imhoff tanks can be either discharged in the environment, sent to a centralized wastewater treatment facility, or sent to constructed wetlands for disinfection and nutrient removal.