Stainless Steel Tube Bundle Heat Exchanger

Before installing the stainless steel tube bundle heat exchanger, first check the elevation of the installation foundation, locate the centerline, and verify the size of the anchor bolts. Inspect the heat exchanger nameplate and pipe outlet orientation. The heat exchanger has been protected by filling with nitrogen before leaving the factory. Do not open the blind flange on the pipe connection.
If the foundation of the heat exchanger is reinforced concrete, one end should be fixed, and a sliding plate should be installed on the other end. If the base is a steel frame, no additional sliding plate is needed; the heat exchanger is placed directly on the steel frame base. Ensure that there are no debris on the support, some contact surfaces, and the sliding end of the heat exchanger should be lubricated with grease.
The heat transfer process in stainless steel tube bundles is not merely a heat transfer phenomenon; it is more importantly the fluid flow state. The heat exchanger plays a controlling role in the heat transfer process. The heat transfer boundary layer on both sides of the heat transfer surface constitutes the main thermal resistance of the heat exchanger. As the turbulent degree of the fluid increases, this boundary layer becomes thinner, reducing the thermal resistance, which is favorable for heat transfer. Conversely, when the turbulent degree decreases, it is unfavorable for heat transfer.
Additionally, the wall thickness of the stainless steel tube bundle heat exchanger should also be limited. The value of recovered heat from the heat exchanger is inversely proportional to the fluid friction resistance, thus influencing the cost of power required. Generally, obtaining reasonable economic design and operation data is determined after the type is decided, but it is inconvenient to be unclear about the approximate range of economic conditions before selecting the type. Therefore, manufacturers should roughly provide the heat transfer coefficient and type during design, calculate the approximate heat transfer area, and at the same time, study the suitable temperature difference for the heat exchanger. The flow ratio of the two fluids is the governing condition for this temperature difference.