Engineering PapersSearch

DOE OSTI · 3682559

Moisture Durability and Thermal Performance of Retrofitted Wall Systems with Wood Fiber Insulation: An Environmental Chamber Study

Abstract

The source did not provide an abstract. Follow the original record for more information.

Keep this discovery

BibTeXRIS

Iffa, Emishaw [ORNL], Desjarlais, Andre [ORNL] (ORCID:0000000186459645), Salonvaara, Mikael [ORNL] (ORCID:0000000318991554), Tang, Mengjia [ORNL] (ORCID:0000000267215626), Smirh, Evan [Highland Park Technologies], Borger, Christian [Highland Park Technologies]. 2025-12-01. Moisture Durability and Thermal Performance of Retrofitted Wall Systems with Wood Fiber Insulation: An Environmental Chamber Study. https://www.osti.gov/biblio/3682559

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

Durability of ABC Team Wall Assemblies

This study evaluates the long-term hygrothermal durability of four advanced retrofit wall systems using a field test facility located in Hollywood, South Carolina, representative of a mixed-humid coastal climate (Zone 3). The research focuses on assessing the thermal and moisture performance of a baseline wall assembly retrofitted with (1) Tremco/Dryvit prefabricated panel systems (Revitalite and Fedderlite), (2) Reinforced Fiberglass Plastic (RFP) panels developed by Oak Ridge National Laboratory (ORNL), and (3) Vacuum Insulated Panels (VIP) integrated with EPS by Home Innovation Research Labs (HIRL) and ORNL. A baseline wall representing a typical uninsulated wood-frame construction was used for comparison.

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATI

Flame retardant biogenic building insulation materials from hemp fiber

Biogenic thermal insulation materials are in high demand because of its carbon-sequestration nature. However, high flammability, moisture condensation, and relatively high thermal conductivity of biogenic material are major concerns for sustainable building applications. In this study, we report the fire-retardant cellulose xerogel insulation nanocomposites derived from hemp fiber recycling and silica xerogel, in which the boric acid treatment improves its fire retardancy. The as-prepared materials show a low thermal conductivity of 31.3 mW/m K, high flexural modulus of 665 MPa, hydrophobicity with the water contact angle of 115°, and fire retardancy with 30% weight loss over a period of burning time 10 min. Overall, this work provides an effective method for the synthesis of fire-retardant biogenic thermal insulation materials and shows a promising way for next-generation bio-based insulation materials.

36 MATERIALS SCIENCE

Retrofitting a Fine-Pointing System to Satellite Optics

This paper describes a system added to an existing satellite-borne telescope design for the purpose of compensating the boresight errors that had been observed in earlier flights of similar instruments. Those errors had been found to be caused by thermal distortion of the spaceframe. This retrofit design was subjected to severe volume restrictions because it was fitted into an already tightly-packaged instrument envelope. It was found practical to improve the basic design by converting a redundant structure into a statically-determinate one. It was also possible to use portions of the mechanical actuation system to facilitate the position encoding needed for computer interfacing.

Robert O Woods