Decreases in both pressure and saturation temperature adversely affect compressor performance.
Refrigerant pipe insulation thickness ashrae.
The requirements for pipe insulation contained in the ashrae 90 1 2007 standard are unchanged from the 90 1.
Guidelines for insulation selection thickness installation and maintenance are found in the 2006 ashrae handbook refrigeration in chapter 33 insulation systems for refrigeration piping reliability should be the primary concern when considering the design and installation for any application.
When ashrae standard 90 1 2010 takes effect later this year compliance will require greater pipe insulation thicknesses.
Proper mitered joints on piping insulation specification item mitered joints on refrigeration insulation improper insulation installation.
Use 1 1 2 thick wall on pipes larger than 2 ips.
In piping 1 in.
For pipes section 6 4 4 1 3 in ashrae 90 1 and section c403 2 10 in the iecc contain the identical table that shows the insulation thickness required depending on the pipe operating temperature and the size of the pipe these sections also give the thermal conductivity range at a specified mean temperature that the insulation must meet for the table to be applicable.
Thickness to prevent heat gain and condensation.
On most pipe sizes when using materials such as mineral wool fiberglass and calcium silicate.
Pipe insulation requirements in commercial buildings continued ansi ashrae ies standard 90 1 2010 2012 iecc code notes 4 table c403 2 8 minimum pipe insulation thickness thickness in inches a fluid.
On steam distribution pipes in buildings those thicknesses will increase from 4 in.
Related commercial resources ashrae handbook refrigeration chapter.
Or less insulation is not required for.
Insulation systems for refrigerant piping clicking on a company s name will take you to their web site.
Pipe hangers ashrae and the pipe manufacturers.
R actual outside radius of pipe in t insulation thickness listed in this table for applicable fluid temperature and pipe size.
Chart shows minimum thickness to meet ashrae 90 1.
Minimum thicknesses to meet ashrae 90.
Such as liquid refrigerant piping.
As refrigerant flows through pipes the pressure drops and changes the refrigerant saturation temperature.
We have replicated the 2016 building energy efficiency standards table 120 3 a pipe insulation thickness below for this review which matches table c403 11 3 of the iecc international energy conservation code and ashrae 90 1 table 6 8 3 1.
46 manufacturer recommendations glue the joints glue the fittings vapor stop.
