Regarding the problem of tube condenser

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A carbon steel tube heat exchanger is used to condense 100-degree secondary saturated water vapor (1atm). The secondary saturated water vapor flow rate is 900Kg/h. The cooling water is softened water, which is used for heating after heat exchange. Assume that the water temperature on the cooling water is 45 degrees, the return water temperature is 55 degrees, and the condenser water temperature is 60 degrees. Based on the amount of secondary saturated steam, the calculated circulating cooling water volume is about 50 tons/hour. If k is 1500, a 20-square-meter condenser will be enough. The question is whether a 20-square-meter tube condenser can meet the requirements in actual production? If the cooling water temperature is 45 degrees, can the return water temperature reach 55 degrees? Is the horizontal or vertical type better? Which direction does water vapor take? Please give some advice from experienced experts, thank you!