Heat Trace Design Guide - ARCO Engineering

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Find QP in Table 1 (page 2) for the nominal pipe size and insulation thickness based on ΔT. For example, for a 3" (76 mm) pipe with 2" (51 mm) insulation and ΔT = 60ºF (33.3ºC), the value for QP is 5.5 W/ft (10.8 W/m). THERMAL DESIGN- PIPES Step 3.Adjust for Insulation Table 1 (page 2) is based on ASTM C547 Fiberglas® insulation.

  Pipe, Fiberglas