Test Procedures for Advanced Insulation Panels.
Test Procedures for Advanced Insulation Panels.
(495 K)
Fanney, A. H.; Saunders, C. A.; Hill, S. D.
Alliance for Responsible Atmospheric Policy; U.S.
Environmental Protection Agency; Environment Canada and
United National Environmental Program. International
CFC and Halon Alternatives Conference, 1994.
Stratospheric Ozone Protection for the 90's. October
24-26, 1994, Washington, DC, 1994 AND National
Institute of Building Sciences/Building Environment and
Thermal Envelope Council. Super Insulations and the
Building Envelope. Proceedings. November 14, 1995,
Washington, DC, 149-161 pp, 1995, 1994.
Keywords:
halons; ozone; thermal measurement; calorimeters; heat
flow; thermal resistance; metal cladding; powder
filling; insulation systems
Abstract:
Advanced insulation technologies are being developed in
order to meet increasing stringent minimum efficiency
standards for appliances and building envelopes.
Numerous advanced insulation concepts have been
developed to the stage that full-scale prototypes and,
in some cases, commercial products are available. These
concepts include powder, aerogel, foam, glass fiber
filled evacuated panels, and low conductivity gas based
systems, some of which are operated at a vacuum whereas
others are operated at atmospheric pressure. These
emerging insulation technologies offer the potential for
extremely high thermal resistance values. The National
Institute of Standards and Technology (NIST) has
undertaken a research program to develop thermal
measurement techniques appropriate for advanced
insulation panels. This paper describes the design of a
calorimetric apparatus, compares the calorimetric
results to measurements made using a heat flow meter
apparatus for homogenous materials, and describes the
procedure used to determine the thermal resistance of an
advanced insulation panel. Finite-element modelling
results are presented which show the effect of various
physical parameters on the overall thermal resistance of
a metal-clad powder-filled vacuum insulation system.
