Heat Exchanger (Condenser)

Within a Condensate Recovery System, this heat exchanger (condenser) serves as the critical component where steam or vapor from industrial processes is cooled and condensed back into liquid water (condensate). It facilitates heat transfer from the hot vapor to a cooler fluid (typically water or air), enabling the recovery of both thermal energy and purified water for reuse in the system, thereby improving energy efficiency and reducing water consumption. The condenser is a component used in machinery and equipment manufacturing, typically integrated into larger systems. It is available in configurations using stainless steel, copper alloy, or carbon steel for wetted parts, with design parameters that must be verified for each application. Key specifications include a heat transfer area ranging from 10 to 500 m², a design pressure of 1.0 to 4.0 MPa, and a design temperature of -20 to 200°C. The cooling water flow rate is 20 to 500 m³/h, and the heat transfer coefficient ranges from 300 to 1500 W/(m²·K). Tube material is typically 304 or 316L stainless steel (ASTM A312), while shell material is Q345R or 304 (GB/T 713). Leakage rate is ≤0.1 mL/min (ISO 15848), weight ranges from 500 to 20000 kg, and dimensions vary from 2000×800×1500 to 8000×2000×4000 mm. These values are reference ranges; actual model-specific data must be confirmed with the legal manufacturer or supplier. The condenser operates by allowing hot vapor to flow on one side of the heat transfer surface (e.g., through tubes or over plates) while a cooler fluid flows on the opposite side. Heat transfers from the vapor to the coolant through the conductive surface, causing the vapor to lose latent heat and phase-change into liquid condensate, which is then collected. Proper selection requires evaluating process conditions, cooling medium availability, and material compatibility. Verification questions should address actual operating pressure, temperature, flow rates, and compliance with relevant standards. Maintenance signals include increased leakage rate, reduced heat transfer efficiency, or visible corrosion. Failure boundaries are defined by design limits; exceeding them may lead to seal failure or structural damage.

Hot vapor flows on one side of the heat transfer surface (e.g., through tubes or over plates). A cooler fluid (coolant) flows on the opposite side. Heat transfers from the vapor to the coolant through the conductive surface. As the vapor loses heat (latent heat of vaporization), its temperature drops below the dew point, causing it to phase-change from gas to liquid (condensate), which is then collected.