In HVAC equipment rooms or chemical plant areas, when maintenance personnel replace heat exchangers, they often first check the installation space and connection orientation, then verify the medium parameters. Taking the BRF-135 plate-frame fin-type heat exchanger as an example, during the selection stage, the design pressure, design temperature, connection diameter, and medium compatibility must be confirmed item by item; a single heat transfer value cannot replace full-condition verification. Field records show that ignoring any one parameter may lead to gasket seal failure or fin channel blockage.
The materials of the fins and plates must be determined according to the corrosivity of the medium. Carbon steel is suitable for general industrial water or oil conditions; 304 stainless steel is suitable for weakly corrosive media; for conditions with chloride ions or large acid-base fluctuations, 316L material is recommended. When replenishing spare parts, maintenance personnel should check the material markings of the original equipment to avoid electrochemical corrosion caused by mixing materials.
The connection diameter should be consistent with the pipeline flange standard, and the pressure drop verification must cover both maximum flow and minimum flow conditions. The BRF-135 plate-frame fin-type heat exchanger has a heat transfer capacity of 1350 kW under design conditions; based on this, maintenance personnel can compare it with the system heat load curve to determine whether the selection margin is insufficient or excessive.
This model is suitable for medium-temperature heat exchange links in HVAC, district heating, and chemical processes. Daily inspections should focus on changes in inlet and outlet temperature differences, traces of gasket leakage, and dust accumulation on the fin surface. When an abnormal increase in pressure drop is found, arrange cleaning or check the filter promptly.
