After a general understanding of the plate heat exchanger, we all know that this product is a very commonly used heat exchange equipment in heating systems. Since it is a heat exchange equipment, its heating characteristics must be very strong. But sometimes the product also has a problem of insufficient heat exchange, which directly affects the quality of heating. Therefore, our main problem now is to find ways to improve the heating quality of this product. So what's a good way?
1. When the primary side pressure drop is also taken at 30kPa, both of them fail to meet the design requirements. If the pressure drop is reduced to 10kPa, then the BRW50 can reach the secondary-side heat medium outlet temperature required by the design. Of course, this is at the cost of doubling the heat exchange area. When the design specifications are delineated to consider the effect of dirt, the area addition coefficient is relatively large at 67%.
2. Under the conditions of standard temperature and normal flow rate, the existing plate heat exchanger can generally guarantee the heating quality required by the design in the early stage of its continuous use period, and in the later stage of its continuous use period, due to the influence of dirt , Can not provide the secondary heat medium required in the design. Narrowing the plate spacing and appropriately increasing the height-to-width ratio of the existing plate heat exchanger plate can effectively improve the heating quality of the product, can improve the heating quality during the scale-attaching operation of the product, and is easily realized in the manufacturing process .
3. In the selection calculation, if the theoretical heat transfer area F0 is determined by the primary heat medium flow rate of 0.4m / s, if the selected area does not consider additional, then the product is used in the early part of the continuous use period. The thermal quality can meet the design requirements, and the designated secondary water temperature cannot be reached in the later stage. However, if the heat exchange area is increased by 15%, even in the later stage of continuous use, the heating quality required by the design can still be guaranteed.
We should also pay attention to the fact that the operating condition of the plate heat exchanger directly affects the quality of its external heat supply. This requires that when we work with this product, we must regularly maintain and repair it to avoid failure of the product. So that it cannot operate normally. In addition, we want the product to have a better heat exchange effect, and we must infer the precise heat exchange area based on the situation when it is not in use.