Used and in good condition Alfa Laval plate heat exchanger, type M15-FF-M8 for water application. The used plate heat exchanger is selected as follows: water flow rate on the cold side 114300kg/h water inlet temperature of +9,5°C and outlet temperature of +13°C, water flow rate on the warme side 114300kg/h inlet temperature of +15°C and outlet +11,5°C.