TABLE OF CONTENTS This chapter is a guide to specifying insulation systems for refrigeration piping, fittings, and vessels operated at temperatures ranging from 35 to ?100 F. It does not deal with HVAC systems or applications such as chilled-water systems. Refer to Chapters 23, 24, 25, and 26 in the 2005 ASHRAE Handbook Fundamentals for information about insulation and vapor barriers for these systems.
The success of an insulation system for cold piping, such as refrigerant piping, depends on factors such as
Correct refrigeration system design
Correct specification of insulating system
Correct specification of insulation thickness
Correct installation of insulation and related materials (e.g., vapor retarders)
Installation quality
Adequate maintenance of the insulating system
Various insulation materials are used for HVAC, steam, and hot-water lines that either run hot or cycle between cold and hot. These lines are insulated for the following reasons:
Energy conservation
Economics (to minimize annualized costs of ownership and operation)
External surface condensation control
Prevention of gas condensation inside the pipe
Process control (i.e., for freeze protection and to limit temperature change of process fluids)
Personnel protection
Fire protection
Sound and vibration control
Design features for typical refrigeration insulation applications recommended in this chapter may be followed unless they conflict with applicable building codes. A qualified engineer may be consulted to specify both the insulation material and...
