Shell and Tube heat exchanger

Shell and tube heat exchanger
1.row tube heat exchanger
2.plates and tube are made by 09Cr2AlMoRE forges and pipe
3. ASME U

Double Rotary cylinder flow heat interchanger  was pass the application Verified, which was developed base on the the spiral baffle heat interchanger.

 

The spiral baffle heat interchanger’s heat transfer pressure drop's efficiency is very high. Mr. P.Krat pointed out in a  article that in the system design, requests heat interchanger's pressure drop to be as far as possible small. In the conventional design, the shell side baffle has the high pressure loss. Therefore, it is necessary to further discuss to baffle's arrangement way. 

 

In the shell type heat interchanger, the shell side will usually be the key factor, the conventional arch baffling plates’ z type flow mode will cause the big dead area and turbulence. The dead area will increase the shell side scaling, will have the adverse effect to the heat transfer speed. Turbulence  will create the mean drop of the mean temperature and confusion, its result will cause the arch baffle type have lower heat exchange efficiency compared with the plunger type. the arch baffle's shell type heat interchanger is very difficulty to satisfy now the high heat exchange efficiency request.

 

Firstly  improvement of the usual baffle's geometrical shape is the direction of  the shell side's research, for example, improve the shape of  guiding baffle and other similar characteristic baffle, can improve the heat interchanger performance. But in the usual baffle design's major problem has not been solved. The spiral heat interchanger as the helix baffle's shell type heat interchanger is helpful in overcomes the usual design  feature. Not only the spiral heat interchanger's merit was confirmed by the transfers heat  experimental, moreover also confirmed by the hydromechanics research institute. The experiment rests on drove that a response technology and makes the revision to the specific goal. But responded that is from optical sensor's tracing output signal. This signal rests on the dimensionless resident time distribution to select, draws the C curve. This will be able to determine the relative volume of dead zones and turbulence. Because think mainstream body flow mode significantly deviate from the plunger streams, can use the hybrid model to test for evaluation. Analysis of test results, return to the mixed and plunger stream C curve tracer for ideal State is located in the output signal range. Because of the real shape of the curve C is close to the piston flow curve, which shows that in the heat exchanger does not occur in turbulence. Spiral heat exchanger of fluid dynamics research shows encouraging results. The use of baffles can close to the plunger flow results approximately,  which can be describe by the number of pecq Wright on heat exchanger efficiency. For example, the design conditions heat exchanger efficiency is 0.70, segmental baffle needed delivery unit number 4.8.

 

In the past, both at domestic and abroad in the baffles, its application is just on the smaller diameters, and Hubei  changjiang petrochemical equipment co., Ltd. made a bold reform and try different Helix angles and baffles for comparison test and optimization on helical structure and achieved good results, solve the baffles leakage problems, develop the unique helical structure. In order to increase the heat transfer efficiency, baffles can apply together with bellows, screw-effect component, the gap between the bellows and baffled resulted in heat exchanger tube vibration, bellows will lost heat effect when scaling, the Hubei Changjiang  petrochemical equipment co., Ltd’s design  optimize the spiral groove tube, which can strengthen the pipe and heat transfer coefficient, durable, and baffled connect tightly.

Hubei changjiang petrochemical equipment co., Ltd invited rotary piston flow heat exchanger (the unique structure of helical groove tube and snails), have been declared national patents, the users get good results.

Our prtoduct in project: