BRIEF DESCRIPTION OF LIMPET COOLING ARRANGEMENT SYSTEM
The main raw material used for the manufacturing of the polyester resin is Styrene Monomer (CAS registry no:
100-42.5). While storing, it should have 5-100ppm inhibitor (IS 14631:1999 Reaffirmed 2009) depending on
period of storage, to avoid self-polymerisation. The inhibitor works well at lower temperature, usually at a
temperature below 25oC.
Hence, Styrene monomer shall be stored at lower temperature, preferably lower than 20oC to have long life and
to avoid self-polymerisation.
For this, limpet cooling coils are provided for the underground Styrene Monomer storage tanks to maintain and
control temperature. The chilled water is generated using a chiller system and is circulated through the coils to
cool and maintain the temperature of the Styrene Monomer below 20oC. A schematic diagram of the cooling
system is shown in the below figure.