Double Pipe Heat Exchanger

We are the leading manufacturer of double-pipe heat exchanger in india. The double-pipe heat exchanger is one of the simplest types of heat exchangers. It is called a double-pipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. This is a concentric tube construction. Flow in a double-pipe heat exchanger can be co-current or counter-current. There are two flow configurations: co-current is when the flow of the two streams is in the same direction, counter current is when the flow of the streams is in opposite directions.
as conditions in the pipes change: inlet temperatures, flow rates, fluid properties, fluid composition, etc., the amount of heat transferred also changes. This transient behavior leads to 2 changes in process temperatures, which will lead to a point where the temperature distribution becomes steady. When heat is beginning to be transferred, this changes the temperature of the fluids. Until these temperatures reach a steady state their behavior is dependent on time.
in this double-pipe heat exchanger a hot process fluid flowing through the inner pipe transfers its heat to cooling water flowing in the outer pipe. The system is in steady state until conditions change, such as flow rate or inlet temperature. These changes in conditions cause the temperature distribution to change with time until a new steady state is reached. The new steady state will be observed once the inlet and outlet temperatures for the process and coolant fluid become stable. In reality, the temperatures will never be completely stable, but with large enough changes in inlet temperatures or flow rates a relative steady state can be experimentally observed.
advantage
reliable closures for design pressures up to 15,000 psi (1055 kg/cm2)
independent tube sheets for high-temperature differences, thermal shock and cycling.
external split rings do not contact shell side fluid.
all connections on the same end for ease of piping.
moveable support brackets with slots for shell expansion and flexibility in installation.
durable all welded baffle cage construction.
all bolting is external.
large radius u-bends for ease of cleaning and effective thermal expansion (no expansion joints)