Causes of insufficient heating capacity of finned tube heat exchanger
① The pressure or temperature of the hot side in the tube is too low. The main symptom is that the temperature of the hot air on the cold side is close to the temperature of the hot side.
② The flow rate on the hot side of the tube is too low. The main symptom is the large temperature difference between the inlet and outlet of the hot side.
③The flow distribution of multiple fin-tube heat exchangers operating in parallel is uneven. The main symptom is the inconsistent temperature at the inlet and outlet of each hot side.
④The heat transfer performance of the finned tube radiator decreases with the use of time.
⑤The design effect of the finned tube radiator is not reached when the finned tube radiator is installed and debugged, and the pipeline stroke is connected correctly, and the insulation measures are ideal
Treatment method to solve insufficient heat exchange capacity of finned tube heat exchanger
① If conditions permit, to increase the temperature or pressure of the finned tube radiator inlet, you need to consult the manufacturer for the design pressure and allowable temperature range.
② Increase the flow of medium in the pipe.
③Adjust the position of the inlet and outlet nozzles to ensure that the formation of each finned tube radiator is consistent.
④Check whether the dirt in the tube is serious, the thermal resistance of 1mm dirt ≈ the thermal resistance of 50mm steel plate. Check whether the fins are overturned or loose, especially the steel tube and aluminum wound fin tube. Clean up the dust or dust on the surface of the fins in time.
⑤Exclude excess gas in the pipe to ensure the normal operation of the trap.