Plate heat exchanger
- Weihai Yuanda Electric Appliance Manufacturing Co., Ltd.
- product brand: Weihai ambitious
- Numéro de stand：B2K02N8G31
- product specification:
- product category:Air Conditioning-Special used air conditioners-Computer room used
- product introduction:1. High heat transfer coefficient: because different corrugated plates are inverted to form a complex flow channel, which makes the fluid flow in three-dimensional rotation in the flow channel between corrugated plates, and can produce turbulent flow at a lower Reynolds number (generally re = 50-200), the heat transfer coefficient is high, which is generally considered to be 3-5 times of the shell and tube type.
2. Large logarithmic average temperature difference and small terminal temperature difference: in shell and tube heat exchanger, two kinds of fluids flow in the tube side and shell side respectively, generally cross flow, and the correction coefficient of logarithmic average temperature difference is small, while plate heat exchanger is mostly parallel flow or counter flow, and its correction coefficient is usually about 0.95. In addition, the flow of cold and hot fluids in plate heat exchanger is parallel to the heat exchange surface There is no side flow, so the temperature difference at the end of plate heat exchanger is small, and the water heat exchanger can be lower than 1 ℃, while the shell and tube heat exchanger is generally 5 ℃.
3. Small floor area: the plate heat exchanger has a compact structure, the heat exchange area per unit volume is 2-5 times of that of the shell and tube type, and it is not the same as that of the shell and tube type, so the same heat exchange is realized. The floor area of the plate heat exchanger is about 1 / 5-1 / 10 of that of the shell and tube heat exchanger.
4. Easy to change the heat exchange area or process combination: as long as several plates are added or reduced, the purpose of increasing or reducing the heat exchange area can be achieved; changing the plate arrangement or replacing several plates, the required process combination can be achieved to adapt to the new heat exchange conditions, while the heat transfer area of shell and tube heat exchanger is almost impossible to increase.
5. Light weight: the plate thickness of plate heat exchanger is only 0.4-0.8mm, while that of shell and tube heat exchanger is 2.0-2.5mm. The shell of shell and tube heat exchanger is heavier than the frame of plate heat exchanger. Generally, the plate heat exchanger is only about 1 / 5 of the shell and tube weight.
