Refrigeration pipework operates at cold temperatures, enabling the formation of condensation which accelerates pipe corrosion and mould growth whilst diminishing insulation performance. In a refrigeration system two sets of heat transfer coils are connected by pipework along which a liquid or gaseous refrigerant flow. Mechanical processes make it possible to cool the refrigerant and in this way heat can be carried away from the refrigeration unit.
Water condenses and instantly freezes on surfaces of pipes operating at temperatures below freezing. Ice formation makes a chiller work harder and can dramatically reduce the system performance and life expectancy so correctly applied insulation is essential for refrigeration pipework.
As condensation and ice forms most readily at the weakest points, including valves and fittings, insulation must be present along the entire pipe length and should demonstrate the following: