The jacketed heat interchanger is becomes with the fitting two kind of sizes different standard pipe couplings the concentric circle the drive pipe. Then with 180° the return bend double bend establishes contacts the multistage drive pipe but becomes, the following chart shows. Each section of drive pipes are called a regulation, the number of passes may act according to the request which transfers heat but to fluctuate. Each regulation effective length is 4-6 meter, if pipe too long, among the tube under the reverberation is curving, causes to move in a circle the fluid distributed non-uniformity.
The double-pipe heat exchanger merit is: The structure is simple; Ability high pressure; The heat transfer area may according to need but to fluctuate; In the suitable choice tube, the outer diameter, may cause the fluid the speed of flow to be big; Also the bilateral fluid makes the strict adverse current, is all advantageous to the heat transfer.
The double-pipe heat exchanger shortcoming is: Between the tube attaches many, is easy to have the revelation; The unit length has the heat transfer area to be small. Therefore in needs to transfer heat the area not when to request too greatly the intensity of pressure high or the heat transfer effect is good, suitably uses the jacketed heat inter changer.
