How does the type of insulation material affect the performance of refrigeration piping?

The type of insulation material used on refrigeration piping significantly affects its performance. For instance, polyurethane foam provides high thermal resistance and low water absorption, making it suitable for applications where moisture is present. Polystyrene foam, on the other hand, offers good thermal insulation and moisture resistance, but is more prone to damage from mechanical stress. Elastomeric foam, being flexible, is ideal for applications where vibration or movement is expected. The choice of insulation material depends on the specific requirements of the application, including temperature range, moisture exposure, and mechanical stress.