Division 22 23 Ebook Page 93 FOAMULAR XPS Pipe Insulation Installation Guidelines

PubNo.10013974-A.Rev.9/2015 Page 23 of 24 FOAMULAR!XPS!Pipe!Insulation Installation!Guidelines Design!Table!for!Ammonia!Refrigeration!Indoors! ambienttemp.=90 o F outersurface=PVC(E=0.9) ambientrelativehumidity=80% windvelocity=0mph dewpoint-83 o F geometry=horizontalpipe ServiceTemperature( o F) NominalPipeSize -100 -80 -60 -40 -20 0 20 40 0.5! 2 2 1.5 1.5 1.5 1.5 1 1 0.75! 2 2 2 2 1.5 1.5 1.5 1 1! 2 2 2 1.5 1.5 1.5 1 1 1.25! 2.5 2.5 2 1.5 1.5 1.5 1.5 1 1.5! 2 2 2 2 1.5 1.5 1.5 1 2! 2.5 2.5 2 2 1.5 1.5 1.5 1 2.5! 2.5 2 2 1.5 1.5 1.5 1.5 1 3! 2.5 2.5 2.5 2 2 1.5 1.5 1 4! 3 2.5 2.5 2 2 1.5 1.5 1 5! 3 2.5 2.5 2.5 2 2 1.5 1 6! 3 3 2.5 2.5 2 2 1.5 1 8! 3 3 2.5 2.5 2 2 1.5 1 10! 3 3 2.5 2.5 2 2 1.5 1 12! 3.5 3 3 2.5 2 2 1.5 1 14! 3.5 3 3 2.5 2.5 2 1.5 1.5 16! 3.5 3 3 2.5 2.5 2 1.5 1.5 18! 3.5 3.5 3 2.5 2.5 2 1.5 1.5 20! 3.5 3.5 3 2.5 2.5 2 1.5 1.5 24! 3.5 3.5 3 2.5 2.5 2 1.5 1.5 28! 3.5 3.5 3 3 2.5 2 1.5 1.5 30! 3.5 3.5 3 3 2.5 2 1.5 1.5 36! 4 3.5 3 3 2.5 2 1.5 1.5 ThistableisbasedontheASTMC680algorithmforthicknessofinsulationrequiredtocontrol condensationontheoutersurfaceofaninsulatedpipe,asusedintheNAIMA3EPLUSprogram. Therequiredinsulationthicknessvaluesdonotincludeasafetyfactor.Actualoperating conditionscanvary.Consultadesignengineerforanappropriatesafetyfactor.Thischartwas developedwithaKfactorof0.200BTU/in-hr-ft 2 -Fat180daysat75Fmeantemperature.

Previous Page
Next Page