The mixed-type condenser utilizes a water film formed by a supercooled water jet, which directly contacts the steam. With advantages such as a high heat transfer coefficient, compactness, reliability, and a low heat transfer temperature difference, it is considered an optimal choice for ships and offshore platforms. The mass and heat transfer at the steam-water film interface is a critical process in direct contact condensers, and the transfer efficiency plays a key role in determining the overall performance of the condenser. The cooling water impacting the baffle and forming the film involves a multiphase flow, with film formation directly influencing the heat transfer characteristics of the condenser This process is affected by various factors, including nozzle angle, liquid film area, and cooling water flow rate. In this study, an experimental approach was adopted to investigate the effects of varying cooling film areas on the condenser’s performance, providing guidance for the subsequent design of condensers. The results indicate that for each nozzle size, there is an optimal flow rate that maximizes the liquid film area. For example, when the nozzle angle is 35°, the optimal film formation flow rates corresponding to 7 mm, 11 mm, and 15 mm nozzles are 0.8, 1.6, and 2.2 L per hour, respectively. The maximum liquid film area varies with different injection angles, and as the nozzle flow rate increases, reducing the injection angle helps achieve a larger liquid film area.