เครื่องแลกเปลี่ยนความร้อนแบบแผ่นถูกนำไปผลิตเชิงพาณิชย์ครั้งแรกในช่วงทศวรรษปี 1930 และปัจจุบันมีการใช้กันอย่างแพร่หลายมากขึ้นในการจัดหาน้ำ, เครื่องทำความร้อน, และโครงการเครื่องปรับอากาศในอาคารอุตสาหกรรมและโยธา. การเลือกเครื่องแลกเปลี่ยนความร้อนแบบแผ่นที่ถูกต้องช่วยให้การดำเนินงานและการใช้งานโครงการเป็นไปอย่างราบรื่น. Here we introduce how to select the เครื่องแลกเปลี่ยนความร้อน.

นี่คือรายการเนื้อหา:

Material of construction
Blocking tendency
Maintence
Pressure Drop

Material of construction

Because compared with the tube or other heat exchanger’s heat surface, แผ่นแลกเปลี่ยนความร้อนพื้นผิวแลกเปลี่ยนความร้อนค่อนข้างเป็นหนังสือ, เท่านั้น 0.5 มม, 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. อย่างไรก็ตาม, 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

ที่ แผ่นแลกเปลี่ยนความร้อน 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. ดังนั้น, 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. บจ, which has been developing heat exchangers for decades and must have the style you need.