Used Alfa-Laval twin plate cooler, type M15-BFM8/65+59, consist of 124 plates in the material of AISI 316 / 0.5mm, equipped with NBR rubber sealings assembled in an industrial frame. Technical data of 1st exchanger: capacity of 625kW, Primary medium water, Process 14-10°C, Flow rate 133m3/h, Pressure drop 45kPa, Secondary medium 30% Eth Glycol, Process 4-10°C, Flow rate 97m3/h, Pressure drop 29kPa. Technical data of 2nd exchanger: capacity of 625kW, Primary medium water, Process 10-6°C, Flow rate 133m3/h, Pressure drop 54.1kPa, Secondary medium Cooled water, Process 1-6.5°C, Flow rate 97m3/h, Pressure drop 31kPa.