When the medium contains acidic or alkaline gases, carbon steel tube bundles and fins are at risk of pitting corrosion. Design and selection personnel should verify the medium composition, concentration, and dew point temperature, and determine the material combination for the tube bundle and fins accordingly. During the ordering stage, on-site operating conditions can be included in the technical agreement, making it easier to check the equipment nameplate parameters item by item upon arrival.
The GFH-50 finned tube heat exchanger is designed and manufactured in accordance with relevant standards such as JB/T 4736. The finned tube arrangement, tube spacing, and face area affect heat transfer capacity and air resistance. During selection, the layout must be verified against the length, width, and height constraints of the installation location, maintenance access, and air inlet/outlet directions, with space reserved for maintenance.
Determine the required heat transfer area based on heat load, inlet/outlet temperatures, and flow rate, and match it with the fan airflow. Selection personnel should compare design conditions with the equipment's nominal parameters item by item, and allow reasonable margin for operating conditions that deviate from the design point, avoiding long-term low-load or overload operation.
Before commissioning the control loop, if signal lights flash abnormally, first check whether the temperature sensor wiring is secure, then inspect the contactor contact status in the control loop. During the selection stage, the temperature measurement point locations and signal types should be clearly defined to facilitate on-site wiring and commissioning.
In corrosive environments, corrosion products tend to accumulate on the outer surface of the tube bundle and at the fin roots. During selection, accessibility for cleaning and inspection should be considered, and necessary inspection openings and drainage measures should be provided. Procurement personnel can use this to verify whether the on-site conditions are consistent with the equipment nameplate parameters.
