HEAT EXCHANGERS
IN ORDER TO COOL OR HEAT A FLUID BY ANOTHER FLUID AND WITHOUT USING COOLERS OR HEATERS DIRECTLY AND AS WELL AS RETRIEVAL OF HEAT OR CHILL FROM PREVIOUSLY GIVEN FLUIDS, HEAT EXCHANGERS ARE USED.
HEAT EXCHANGERS AVAILABLE IN THE INDUSTRIES AND FACTORIES SPECIALLY IN PETROCHEMICAL INDUSTRY, ARE USUALLY OF “SHELL AND TUBE HEAT EXCHANGERS”. THE ADVANTAGES OF THESE HEAT EXCHANGERS ARE THE LARGE CONTACT AREA IN LOW VOLUME, GOOD MECHANICAL DESIGN, UNIFORM PRESSURE DISTRIBUTION AND EASY CLEANING. THE STRUCTURE OF HEAT EXCHANGERS CONSIST OF A NUMBER OF TUBES THAT ARE PLACED IN A CYLINDER AND TWO FLUIDS THAT ONE IS COLD AND ANOTHER IS WARM WITHOUT BEING IN DIRECT CONTACT THROUGH THE WALL OF METAL TUBES, EXCHANGE THE HEAT.