As an efficient and compact heat exchange equipment, plate heat exchangers are widely used in petroleum, chemical, metallurgical and other engineering fields, and play an important role in the national economy and industrial production. Therefore, it is very important to develop and optimize the design of the plate shape and improve the overall performance of the heat exchanger. The corrugation angle is an important design element of the plate exchange. We found that as the plate angle of the plate heat exchanger decreases, the heat exchange performance of the plate heat exchanger is reduced to a certain extent, and the flow resistance is also reduced correspondingly, but the overall performance is correspondingly increased. . In actual work, this conclusion can guide the selection and design of heat exchangers.
Determine the plate angle of the plate heat exchanger mainly based on the following points:
1. The type of medium. The type of medium here is mainly based on the special medium. For example, the mortar used in the photovoltaic industry has a large viscosity and a slow flow rate. Therefore, when selecting a design, we will give priority to a small angle so that the flow rate can be increased.
2. The flow rate, such as the steam-water heat exchanger, the steam flow rate is too large, then our first consideration is to prefer a small angle, because the steam flow rate itself is fast, plus the current large flow rate, considering that the heat of the steam can be fully absorbed Use, a small angle is the first choice
3. Heat exchange area. Some heat exchangers need to be replaced by the whole machine due to their age. However, without knowing any parameters, the heat exchange area can also be provided. Calculate the approximate number of channels based on the heat exchange area, and calculate whether the existing channels can be satisfied based on the average flow rate of the medium in the plate heat exchanger, so as to determine the plate angle of the plate heat exchanger.