Work Item
ASTM WK93450
New Practice for Testing for Retention of Thermal Properties after water immersion and evaporation of water
1. Scope
This is a practice for testing for thermal properties of new above ambient pipe insulation, subsequent water immersion and drying of it, followed by retesting for thermal properties. The objective is to measure any deterioration of thermal properties after water immersion and drying. This practice is intended to reproduce the exposure of district energy pipe insulation on below ground pipes.Keywords
testing for thermal properties, pipe insulation, water immersion, drying of wet insulationRationale
There are large quantities of below ground, insulated pipes that carry steam or hot water for district energy heat distribution systems. Often, due to rain and / or melting snow, resulting in a high water table, the insulated pipes become temporarily immersed in water, resulting in the pipe insulation becoming saturated with water. When the steam or hot water subsequently dries the pipe insulation, it can become thermally degraded. This is a practice for determing the extent of that thermal degradation.
Work Item Status
Date Initiated: 01-15-2025
Technical Contact: Gordon Hart
Item: 000
Ballot:
Status: