“Don't gobblefunk around with words.” (Roald Dahl)

 

ENDO VS EXO ...
ALL GREEK TO ME!

Endothermic Chemical Reaction: Chemical Reactions that absorb the heat around them to keep on going.

Otherwise stated, heat is a necessary reactant to keep an endothermic reaction going and must be constantly supplied.

 

THAR SHE BLOWS!

Air-Cooled Exchangers: A fancy name for a fin fan.

Air-Cooled Condenser: A fancy name for a fin fan which also clarifies that the process stream that is cooled down in the fin fan will exit the fin fan completely in the liquid phase.

Fin Fans: The commonly used nick name for a type of temperature-reducing process industry equipment that uses a fan to mechanically induce or force air to flow around the nooks and crannies of finned tubes through which a hot process fluid is flowing.

The hot process fluid indirectly transfers its heat into the cool air.

The purpose of the fin fan is to get rid of heat pronto before the process stream flows into the next processing step or flows into a storage tank.

Fin Fan Condensers: See Air Cooled Condenser definition above.

Fin Fan Heat Exchangers: Another common name for a fin fan that accurately classifies fin fans as heat exchangers because heat is transferred out of a hot process stream.

Although technically accurate, the phrase is a bit misleading in that the heat transferred is not exchanged but rather intentionally wasted.

Finned Tubes: The multiple rows of tubes in a fin fan through which the hot process stream flows.

The tubes are densely surrounded by thin-metal fins or extensions which increase the surface area available for heat transfer.

Header Inlet: The opening through which the hot process stream flows into the fin fan.

Header Outlet: The opening through which the colder process stream flows out of a fin fan.

(Fin Fan) Tube Sheet: The flat sheet of metal with many finned tubes connected to it that separates the single hot process stream which entered the Header Inlet into multiple rows and layers of small streams that flow through the finned tubes.

The cooled process fluid exits the finned tubes via an outlet tube sheet and is once again aggregated into one process stream before entering the Header Outlet.

 

COOL   CLEAR   WATER

Basin: The cement tank at the bottom of a cooling tower that captures the cooled water.

Cooling Tower: A temperature-reducing piece of equipment installed specifically to remove the heat that has been transferred into a circulating  water stream so that the water is once again sufficiently cool and able to have more heat transferred into it.

The majority of the heat removed from the hot water is accomplished via evaporation.

Evaporation is accomplished by promoting contact between the downward trickling hot water and cross-wise flowing cool air.

Cooling Water Supply Header: The pipe at the discharge of the Cooling Water Supply Pump through which cold water returns to the processing area and is subsequently split up and used in shell and tube heat exchangers designed to use the "cw utility" for coolant.

Cooling Water Supply Pump: The pump that draws suction from the basin of cold water and adds pressure to the fluid so that it can be delivered back to the process area via the Cooling Water Supply Header.

Cooling Water System: Process industry equipment that is purposely connected together to provide the "cooling water" or "cw" utility.

A Cooling Water System includes:

• All the shell and tube heat exchangers that use the cw utility as a coolant.
• The Hot Water Return Header which collects the hot water that exits heat exchangers.
• The Cooling Tower which cools down the hot water primarily by evaporation.
• The Cold Water Supply Pump and Cold Water Supply Header that circulate cold water back to the shell and tube heat exchangers that use it as a coolant.

Fan Deck: The wooden deck on top of a Cooling Tower that physically supports the induction fan.

Process Operators can access and monitor the operations of the hot water collected in the Hot Water Tanks from the Fan Deck.

Hot Water Return Header: The pipe that collects all the hot water returning to the Cooling Tower after the water has been used as a coolant in shell and tube heat exchangers.

The Hot Water Return Header delivers one hot water stream to the Hot Water Tanks on top of the Cooling Tower.

Hot Water Pipes: Pipes that extend the length of the Cooling Tower's wedge-shaped filled areas and are filled with hot water from the Hot Water Tanks.

Hot Water Tanks: The tanks on top of the Cooling Tower that collect the hot water returned from the process area.

Induced Draft Air Flow Area: This is another name for the 'filled, wedge shaped area' of a Cooling Tower.

The placement of a fan up high in the tower induces air to enter the  the Louvers and flow in a cross-wise pattern relative to the hot water that is tricking down.

(Air) Louvers: Slats on the sides of the Cooling Tower that draw the surrounding ambient air into the Cooling Tower structure.

Mist Eliminator: A barrier that allows air to flow through but knocks water particles back into the filled area so that they will continue trickling downward.

The mist eliminator is located between the wedge shaped filled area and the empty center area of a Cooling Tower through which only air is supposed to flow.

The mist eliminator reduces Drift Losses.

Spray Nozzles: Nozzles that are on the bottom sides of the Hot Water Pipes that start the trickling flow of hot water downward through the Cooling Tower.

 

©2015 PTOA Segment 00055
PTOA Process Industry Jargon Recap 2-5

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