Behavior of cellular glass insulation on a DHC pipe subjected to underground water attack
- Texas Tech Univ., Lubbock, TX (United States). Dept. of Mechanical Engineering
- General Motors Corp., Troy, MI (United States). Advanced Technology Vehicles
- Eaton Corp., Rochester Hills, MI (United States). Climate Control Engineering
Cellular glass pipe insulation was tested unjacketed under flooded conditions to simulate underground water attacking an underground pipe in a district heating and cooling system. The pipe`s fluid temperature was tested from 35 F (1.6 C) to 20 F (216 C). The surrounding water was maintained from 46 F (7.7 C) to 100 F (37.7 C) to simulate the possible conduit water temperatures when the system fails. Cellular glass pipe insulation of 2-inch, 3-inch, and 4-inch thicknesses was tested. The insulation demonstrated excellent moisture resistant performance when the pipe temperature was lower than the surrounding water temperature. Cracks developed in the insulation when the pipe temperature was higher than the water temperature, causing a deterioration in insulating performance.
- OSTI ID:
- 687586
- Report Number(s):
- CONF-980650-; TRN: IM9944%%251
- Resource Relation:
- Conference: 1998 ASHRAE summer annual meeting, Toronto (Canada), 20 Jun 1998; Other Information: PBD: 1998; Related Information: Is Part Of ASHRAE transactions 1998: Technical and symposium papers. Volume 104, Part 2; PB: 1511 p.
- Country of Publication:
- United States
- Language:
- English
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