How to convert saturated steam into subcooled water.

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There is a process in which saturated steam at 2 bar needs to be condensed to 1.5 bar, with subcooled water at 70°C being recycled (taking into account a pressure loss of 0.5 bar). How can this process be achieved? 1. We know that the condensation pressure changes with the condensation temperature. Only under negative pressure conditions is it necessary to use an exhaust pump to maintain that negative pressure. How to achieve supercooled water at 70℃. 2. Can this be achieved by increasing the back pressure at the discharge end, for example by raising the pressure of the water being discharged to 1.5 bar, while condensation still takes place normally at the upstream end. Once the condensation temperature reaches 111°C and saturation is attained, further condensation occurs at 70°C, with the water being discharged at 1.5 bar. 3. If the above method is adopted, how can the back pressure be increased? What methods can be used? Will there be any changes in the design of the heat exchanger, or will additional devices need to be added? 4. Are there any other methods?