Anti - Corrision Dry Heat Exchanger , Commercial Straight Tube Heat Exchanger

Dry Type Shell and Tube Heat Exchanger

Water - Cooled Tube Heat Exchanger
 
The evaporator is one of the main heat exchange equipment in the refrigeration equipment for the heat
 
exchange between the refrigerant and the cooled medium. The dry horizontal shell and tube evaporator is
 
the most commonly used. Dry horizontal shell and tube evaporator is mainly used for freon refrigeration
 
system, in which the refrigerant along the shell flow, refrigerant liquid flow along the pipeline, the
 
refrigerant filling less. Commonly used in the project are straight tube and U-tube. A. Freon with a straight
 
tube dry evaporator: refrigerant liquid after throttling from the end of the end of the evaporator inlet into
 
the pipe, after 2-4 processes after the end of the end of the same side of the end of the outlet The
 
Refrigerant in the straight tube dry evaporator flow of a single into a single, double into a single, double
 
into the double and other different forms. Straight tube type evaporator on the level of smooth copper
 
tube sets with a number of inverted array of cut off the arch area of ​​the circular baffle. The coolant flows
 
along the pipe under the guidance of the shell-shaped round baffle, and flows out above the other end (or
 
side) of the barrel. Since the heat dissipation coefficient of the refrigerant inside and outside the heat
 
transfer tube is different from that of the refrigerant, various types of fins are often used to enhance the
 
heat transfer of the evaporator. B. U-tube dry evaporator: it consists of a number of different radius U-
 
shaped tube, the opening of these U-shaped tube expansion in the same tube plate, the other structure
 
and straight tube similar. In the U-tube dry evaporator, the refrigerant liquid is throttled and enters from
 
the lower part of the end cap, and is sucked out from the upper end of the end cap after two processes.
 
The advantage is that the internal stress is not caused by the difference in the expansion rate of the
 
different materials and the U-shaped tube bundle can be easily pumped out. Dry-type evaporator liquid
 
charge is generally about 40% of the volume of the tube, obviously less than the full liquid evaporator, so
 
the refrigerant liquid static pressure is less affected, easy drainage, cold refrigerant will not swell Cracking
 
heat pipe; also has a compact structure, high heat transfer coefficient. But the refrigerant in the tube
 
group is not easy to liquid evenly, the baffle outside the shell and the shell is easy to produce refrigerant
 
leakage bypass, affecting its heat transfer effect.