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SHELL AND TUBE HEAT EXCHANGERS

- FINNED TUBE HEAT EXCHANGERS

- REPAIR & RETUBING OF HEAT EXCHANGERS

- OIL COOLERS

- HEAT RECOVERY SYSTEMS

- AGITATED VESSELS

- PIPE IN PIPE HEAT EXCHANGERS

- PRE / INTER AND AFTER COOLERS

- STORAGE AND NON STORAGE CALORIFIERS

- DX & FLOODED CHILLERS

- PROCESS CONDENSORS

- STEAM HEATERS

- STEAM CONDENSORS

- STORAGE VESSELS

- AIR & GAS RECIEVERS

- PRESSURE VESSELS

- AC & R CONDENSORS
TYPES OF SHELL & TUBE HEAT EXCHANGERS MANUFACTURED BY FLOWLINK
Fixed Tube-Sheet Exchangers :-

These are the most economical and are used more often than any other type. The tubes sheets are welded to the shell. The tubes can be examined and replaced easily. Expansion joints are used where there is a possibility of excessive stresses due to differential expansion during operation.

Packed Lantern Ring Exchangers :
This is the least costly of straight-tube removable bundle types. The use of this type is recommended only for mild service conditions of design temperature below 200°C, and design pressure below 25 kg/sq., Cm.

Outside Packed Floating Head Exchangers :
In this construction, the shell side fluid is contained by packing rings, which are compressed within a stuffing box by a packing follower ring. The tube bundle is removable and has straight tubes which can be easily examined and replaced. This type of construction accommodates differential expansion between shell and tubes. Recommended for design temperatures below 300°C and design pressures below 50 Kg./Sq. Cm.

U-Tube Heat Exchanger :
The tube Bundle, in this case, consists of a stationery tube sheets, "U" tubes (or hair pin tubes). The tube bundle cab be removed from the shell for inspection and cleaning from outside. The design is particularly recommended for high pressure, high temperature applications. The disadvantages of this design are that the tubes cannot be mechanically cleaned from inside, and also that the tubes can not be replaced except for a few outer bands. Variations of this design are used as Tank Suction Heaters and also in Kettle type re-boilers / evaporators etc.

Internal Floating Head Exchanger :
The tube bundle is removable and the floating head takes the differential expansion between the Shell & Tubes. A split backing ring and bolting usually hold the floating head cover and the floating tube sheet. The split backing ring and head cover need to be removed before the tube bundle can be removed. This type is extensively used in petroleum refinery service.

Pull Through Floating Head Exchanger :
The construction is similar to the Internal Floating Head tube except that the tube bundle can be withdrawn from the shell without removing the shell cover or the floating head cover. These are more expensive than the internal Floating head type exchangers.