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China Stainless Steel Tubular Heater Factory - Reliable Suppliers for Efficient Heat Exchanger Solutions
Description
Tubular 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.
Main Control Parameters
The main control parameters of Tubular 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.
Characteristics
Efficient and energy-saving, the heat transfer coefficient of this heat exchanger is 6000-8000W/m2.0C.
Made of all stainless steel, with a long service life of over 20 years.
Changing laminar flow to turbulence improves heat transfer efficiency and reduces thermal resistance.
Fast heat exchange speed, high temperature resistance (400 ℃), and high pressure resistance (2.5Mpa).
Compact structure, small footprint, light weight, convenient installation, and saving on civil engineering investment.
Flexible design, complete specifications, strong practicality and targeting, saving funds.
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.
Low maintenance cost, easy operation, long cleaning cycle, and convenient cleaning.
The use of nano thermal film technology significantly increases the heat transfer coefficient.
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.
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.
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.
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 & velocity (Under 0.5m/sec m/hr) | Nominal pressure (MPa) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | - | |
Frequently Asked Questions
Q1. What are the main components of a Tubular Heat Exchanger?
A tubular heat exchanger consists of components such as a shell, heat transfer tube bundle, tube plate, baffle plate (baffle), and tube box. One fluid flows inside the tubes (tube side) while another flows outside the tubes (shell side) to facilitate heat exchange.
Q2. What is the purpose of the baffles inside the shell?
Baffles are installed to increase the fluid velocity on the shell side. They force the fluid to pass through the tube bundle multiple times along a specified path, which enhances fluid turbulence and improves the overall heat transfer coefficient.
Q3. How do equilateral triangle and square tube arrangements compare?
An equilateral triangle arrangement is compact, offering a high degree of turbulence and a larger heat transfer coefficient. In contrast, a square arrangement makes cleaning the outside of the pipes much easier, making it suitable for fluids that are prone to scaling.
Q4. What are the key performance limits of these heat exchangers?
These tubular heat exchangers feature high temperature resistance of up to 400 ℃ and high pressure resistance of up to 2.5Mpa. They offer an efficient heat transfer coefficient of 6000-8000W/m2.0C and a service life exceeding 20 years.
Q5. What are the primary control parameters during selection?
The main control parameters to consider are the heating area, hot water flow rate, heat exchange capacity, and heat medium parameters.
Q6. What industries commonly use tubular heat exchangers?
They are widely applied in fields such as thermal power, factories and mines, petrochemical industry, urban centralized heating, food and medicine, energy electronics, machinery, and light industry.