Bộ trao đổi nhiệt dạng tấm lần đầu tiên được đưa vào sản xuất thương mại vào những năm 1930 và hiện nay đang được sử dụng ngày càng rộng rãi trong cấp nước, sưởi, và các dự án điều hòa không khí trong các công trình công nghiệp và dân dụng. Việc lựa chọn đúng bộ trao đổi nhiệt dạng tấm có thể đảm bảo việc thực hiện và sử dụng dự án suôn sẻ. Here we introduce how to select the heat exchanger.

Đây là danh sách nội dung:

Material of construction
Blocking tendency
Maintence
Pressure Drop

Material of construction

Because compared with the tube or other heat exchanger’s heat surface, tấm trao đổi nhiệt bề mặt trao đổi nhiệt khá là một cuốn sách, chỉ một 0.5 mm, corrosion allowance is basically meaningless. The maximum corrosion rate allowed is 0.05mm/a. The heat exchange surface of a plate heat exchanger sometimes requires the use of alloy materials. Tuy nhiên, except for the occasional use of high-strength alloy materials, thin plates and high heat exchange rates in plate heat exchangers mean that the heat exchanger is less expensive.

Blocking tendency

Blocking is a common phenomenon encountered in heat exchangers. Blockage occurs when a low thermal conductivity material is formed on the surface of the heat exchanger. The heat exchange rate decreases because the resistance factor is added to the heat exchange system fraction. Also, the pressure drop increases when the number of flowable interface paths is reduced. The plate heat exchanger is less likely to be blocked. Because of the uniform media distribution, high turbulence, and smooth surface of the plate. The use of highly corrosion-resistant materials for the plates also reduces blockages.

Maintenance

The plate heat exchanger has certain advantages in terms of maintenance. It is easy to detect blockage and corrosion, easy to clean chemically and mechanically, and easy to repair. The heat exchange capacity can also be expanded by increasing the number of plates, provided the frame and interface are suitable. The bolted structure of the plate heat exchanger can be increased by increasing the length of the load-bearing rod to meet the requirements of alternative operating conditions. Plate heat exchangers can be used for other applications as long as the plates and gaskets are suitable for the new process fluid.

Pressure Drop

Pressure drop plays an important role in the design of a wrench heat exchanger. Due to the high cost of the pump and the limitations of the process, the pressure drop is somewhat limited. Vì thế, it is very important to effectively utilize the total pressure drop generated on the plate heat exchanger, where the plate pressure drop loss occurs near the holes and in the channels. If a multi-flow system is used, the pressure drop increases considerably, therefore, it is recommended to use a single-flow system whenever possible to achieve good heat exchange results. The pressure drop generated in the channel is due to the friction between the medium flow and the plate and increases with the flow rate in the channel. In general, the pressure is proportional to the square of the channel flow rate.

These are just a few of the indicators to look for during the selection of a heat exchanger. If you have a need for a plate heat exchanger, you can pay attention to Shanghai Jiangxing Chemical Equipment Co. Công ty TNHH, which has been developing heat exchangers for decades and must have the style you need.