Stainless Steel Shell And Tube Heat Exchanger

product details

description

A shell and tube heat exchanger consists of components such as a shell, heat transfer tube bundle, tube plate, baffle plate (baffle), and tube box. The shell is mostly cylindrical, with a bundle of pipes installed inside, and the two ends of the bundle are fixed on the tube plate. There are two types of fluids for heat exchange: cold and hot. One flows inside the tube and is called the tube side fluid; Another type of flow outside the tube is called shell side fluid. To improve the heat transfer coefficient of the fluid outside the pipe, several baffles are usually installed inside the shell. Baffles can increase the fluid velocity on the shell side, forcing the fluid to pass through the tube bundle multiple times according to the specified path, and enhancing the degree of fluid turbulence. The heat exchange tubes can be arranged in equilateral triangles or squares on the tube plate. The equilateral triangle arrangement is relatively compact, with a high degree of turbulence in the fluid outside the pipe and a large heat transfer coefficient; A square arrangement makes cleaning outside the pipe convenient and suitable for fluids that are prone to scaling.

The main control parameters of shell and tube heat exchangers are heating area, hot water flow rate, heat exchange capacity, and heat medium parameters.

Each time a fluid passes through a tube bundle, it is called a tube pass; Each pass through the shell is called a shell pass. The diagram shows the simplest single shell and single tube heat exchanger, abbreviated as Type 1-1 heat exchanger. To improve the fluid velocity inside the pipe, baffles can be installed inside the two ends of the pipe box to divide all pipes into several groups. In this way, the fluid only passes through a portion of the tube each time, so it travels back and forth multiple times within the tube bundle, which is called a multi tube pass. Similarly, to increase the flow velocity outside the pipe, longitudinal baffles can also be installed inside the shell to force the fluid to pass through the shell space multiple times, known as multiple shell passes. Multi tube and multi shell processes can be used in conjunction.

1. Efficient and energy-saving, the heat transfer coefficient of this heat exchanger is 6000-8000W/m2.0C.

2. Made of all stainless steel, with a long service life of over 20 years.

3. Changing laminar flow to turbulence improves heat transfer efficiency and reduces thermal resistance.

4. Fast heat exchange speed, high temperature resistance (400 ℃), and high pressure resistance (2.5Mpa).

5. Compact structure, small footprint, light weight, convenient installation, and saving on civil engineering investment.

6. Flexible design, complete specifications, strong practicality and targeting, saving funds.

7. It has a wide range of application conditions and is suitable for a large range of pressure and temperature, as well as heat exchange in various media.

8. Low maintenance cost, easy operation, long cleaning cycle, and convenient cleaning.

9. The use of nano thermal film technology significantly increases the heat transfer coefficient.

10. It has broad application fields and can be widely used in fields such as thermal power, factories and mines, petrochemical industry, urban centralized heating, food and medicine, energy electronics, machinery and light industry, etc.

11. The heat transfer tube adopts copper tubes with rolled fins on the outer surface, which has a high thermal conductivity and a large heat transfer area.

12. The guide plate guides the shell side fluid to flow continuously in a zigzag shape inside the heat exchanger, and the spacing between the guide plates can be adjusted according to the optimal flow rate. The structure is sturdy and can meet the heat transfer needs of shell side fluids with high flow rates, even super large flow rates, and high pulsation frequencies.

13.When the shell side fluid is oil, it is suitable for heat exchange of low viscosity and cleaner oil.

specification

DN	Tube side	Number of tubes	heat exchange area Nominal/calculated					Cross-sectional area of pipeline channel and flow velocity of pipeline channel Under 0.5m/sec m/hr		nominal pressure
			Length of tube（m）					φ25×2.5
			1500	2000	3000	4000	6000	φ25×2
159	1	14	1.5/1.62	22.17	33.27			0.0044/0.0049	7.92/8.82	0.25
219	1	26	3/3.00	4/4.02	6/6.06	8/8.1		0.0082/0.0090	14.76/16.20	0.6
	2	26	3/3.00	4/4.02	6/6.06	8/8.81		0.0041/0.0045	7.38/8.01	1.0
273	1	44	5/5.08	7/5.18	10/10.26	14/13.72	21/20.63	0.0138/0.0152	24.84/27.36	1.6
	2	40	5/4.62	6/6.19	9/9.33	12/12.47	19/18.76	0.0063/0.0069	11.24/12.42	2.5
325	1	60	7/6.93	9/9.28	14/14.00	19/18.71	28/28.13	0.0188/0.0208	33.84/37.44	0.6
	2	56	6/6.47	9/8.66	13/13.05	17/17.46	36/26.26	0.0088/0.0097	15.84/17.46	1.0
400	1	119	14/13.47	18/18.41	28/27.76	37/37.10	55/55.8	0.0374/0.0412	67.32/74.16	1.6
	2	110	13/12.70	17/17.02	26/25.66	34/34.20	50/51.58	0.0173/0.0190	31.14/34.20	2.5
500	1	185			45/4.15	55/57.68	85/86.74	0.0581/0.0641	104.58/115.38
	2	180			40/41.99	55/57.68	85/86.74	0.0283/0.0312	50.94/56.16
600	1	269			60/62.7	85/83.88	125/126.13	0.0845/0.0932	152.10/167.76
	2	266			60/32.05	80/82.94	125/14.72	0.0418/0.0461	75.24/83.98
700	1	379			90/88.41	120/118.17	175/177.71	0.0091/0.1313	214.38/236.34
	2	358			85/83.51	110/111.62	165/167.85	0.0562/0.0620	101.16/111.60
800	1	511			120/119.20	160/159.16	240/239.60	0.1605/0.1770	288.90/318.60
	2	488			115/113.83	150/152.16	230/228.81	0.0767/0.0845	138.06/152.10
900	1	649			150/151.39	200/202.36	305/304.3	0.2036/0.2248	367.02/404.46
	2	630			145/146.96	195/196.44	295/295.40	0.0990/0.1091	178.20/196.38
1000	1	805			185/187.78	250/251.00	375/377.45	0.2529/0.2788	455.22/501.74
	2	792			185/184.75	245/246.95	370/371.36	0.1244/0.1374	223.92/246.96