Pipe Insulation Thickness Tables

Ashrae 189 1 2009 and iecc 2009 featured changes to their.

Pipe insulation thickness tables.

The following tables compare the minimum insulation thickness required to maintain the outside surface temperature at or below 140ºf. Ashrae 90 1 2010 includes a new more stringent table. A low thermal conductivity allows specified thermal performance standards to be achieved with thinner insulation. For product availability please contact your local owens corning area sales manager.

Iron pipe double layer nesting chart iron pipe size iron pipe outside diameter insulation wall thickness 1 1 2 2 3 3 4 4 5 6 0 840. Indicative thickness mm of insulation for non domestic hot water 60 c and low temperature heating service areas 75 c to control heat loss. Eca y50 enhanced table 2. To meet the energy code requirement a minimum pipe insulation thickness of 4 5 in.

These tables were generated using the naima 3e plus computer program which follows the heat transfer calculation methodology in astm c680. With a 25 year aged thermal conductivity as low as 0 025 w m k at 10 c mean kooltherm pipe insulation is one of the most thermally efficient insulation material commonly used. To avoid heat loss and reduced system efficiency pipe work in heating systems should always be insulated. Hot cold water freeze protection.

The values are in figures 1 and 2 complete with the footnotes. Insulation thickness table to control heat loss. The thickness of pipe insulation for most common residential cold water pipes is 1 2 thick. In the new standard these tables are also reproduced in metric units.

There is usually no additional benefit of adding more than 1 2 thick fiberglass or rubber pipe insulation to cold water piping. Refer to fiberglas pipe insulation sizing manual for more information. The minimum pipe insulation thicknesses are given in two tables 6 8 3a and 6 8 3b in the standard. Very hot systems like hot water and steam systems should also be insulated to avoid potential personal injuries.

Based on nes y50 enhanced and enhanced capital allowance thickness tables. Thickness 0 2 in 5 mm 0 4 in 10 mm material form 1 500 ft rolls. Our fiberglas pipe insulation portfolio is available in thicknesses up to 5 with inside diameters of up to 36.