Q: When selecting the HXR-30 tube-fin heat exchanger, how should the fin-side inlet-outlet air temperature difference be defined?
A: Taking a drying line waste heat recovery scenario as an example, the fin-side inlet-outlet air temperature difference should not be less than 25°C. If the temperature difference is too small, the heat recoverable per unit air volume is limited, and the utilization rate of the heat exchange area decreases. During selection, it is necessary to calculate whether the product of air volume and temperature difference meets the target heat exchange capacity.
Q: What boundary requirements do environmental conditions impose on fin-side operation?
A: The ambient temperature should be in the range of -20 to +60°C, and the relative humidity should be below 80%. Outside this range, condensation or frost may form on the fin surface, affecting air circulation and heat exchange efficiency. It is necessary to evaluate whether pre-dehumidification or anti-freezing measures are required.
Q: What operating conditions is this heat exchanger suitable for?
A: It is commonly used in air-cooled air conditioning, compressed air aftercooling, and process air circulation systems. During selection, the tube-side medium, flow rate, and fin-side air volume must be clearly defined to ensure that the parameters on both sides match.
Q: What are the key operational points for routine inspection and cleaning?
A: After shutdown, first cut off the power supply, and wait until the surface temperature drops to ambient temperature before proceeding. When cleaning the fins, avoid using sharp tools to prevent fin deformation that could affect ventilation.
