Spiral heat exchanger

Figure 7.11 Details of the burner vessel used by Rossini to determine the enthalpy of formation of water [54,99], A burner tube B and C platinum electrodes D reaction chamber E exit tube F heat-exchange spiral ...

Spiral Heat Exchangers. Spiral heat exchangers have similar problems to the plate type when the gap is small. The velocity profile is better than the plate type. These types of exchangers can be used for media with low... 

It is improbable that these clearances will all accumulate to either the positive or negative side, so it is customary to compute heat transfer relationships on the basis of average clearances. Refer to Plate and Frame Heat Exchanger, Spiral Plate Heat Exchanger, and U-Tube Heat Exchanger. (Source N. P. Cheremisinoff, Handbook of Chemical Processing Equipment, Butterworth-Heinemann Publishers, U.K., 2000). 

For extended surfaces, which include fins mounted perpendicularly to the tubes or spiral-wound fins, pin fins, plate fins, and so on, friction data for the specific surface involved should be used. For details, see Kays and London (Compact Heat Exchangers, 2d ed., McGraw-HiU, New York, 1964). If specific data are unavailable, the correlation by Gunter and Shaw (Trans. ASME, 67, 643-660 [1945]) may be used as an approximation. 

Air-cooled heat exchangers include a tube bundle, which generally has spiral-wound fins upon the tubes, and a fan, which moves air across the tubes and is provided with a driver. Electric motors are the most commonly usea drivers typical drive arrangements require a V belt or a direc t right-angle gear. A plenum and structural supports are basic components. Louvers are often used ... 

Description The spiral-plate heat exchanger (SHE) may be one exchanger selec ted primarily on its virtues and not on its initial cost. SHEs offer high reliability and on-line performance in many severely fouling seiwices such as slurries. 

Figure 10-9A. Spiral flow heat exchanger, cross-flow arrangement for liquids, gases, or liquid/gaseous (condensable) fluids. (Used by permission Alfa Laval Thermal Inc., Bui. 1205 1993.)...

Figure 10-9D. Assembly of components of Heliflow spiral heat exchanger. (Used by permission Graham Manufacturing Company, Bui. Operating and Maintenance Instructions for Heliflow . )...

FIG. 10 Energy-saving evaporation of alkanesulfonate solution. 1, Spiral tube vaporizer 2, cyclone separator 3, heat exchanger 4, rotation film evaporator. 

Figure 9.90. Spiral heat exchanger (a) Flow paths...

Spherical droplet in a liquid, mass transfer 617 Spiral heat exchangers 550 Spray dryers 393... 

Spiral heat exchangers are compact units a unit with around 250 m2 area occupying a volume of approximately 10 m3. The maximum operating pressure is limited to 20 bar and the temperature to 400°C. 

The design of spiral heat exchangers is discussed by Minton (1970)... 

Trom L. (1990) Hyd. Proc. 69 (10) 75. Consider plate and spiral heat exchangers. 

---