Multiple Regression Analysis of in situ Thermal Measurements — Study of an Attic Insulated with 800 mm Loose Fill Insulation

Abstract

A multiple regression method for analyzing thermal measurements in order to eliminate the influence of varying outdoor temperature is suggested. It is shown that the method worked extremely well for in situ measurements in a one- family house situated in the south of Sweden, where the thermal resistance of 0.8 m loose fill glass fiber attic insulation was determined during a 60-day winter period and a 14-day summer period.

Get full access to this article

View all access options for this article.

References

Aittomaki, A. "Determination of the Overall Heat Transfer Coefficient of Multilayer Structures under Non-Steady Conditions," CIB W 40, Holzkirchenmeeting, 18-20 September, 1972.

Ahvenainen, S. , E. Kokko and A. Aittomaki. 1980. "Thermal Conductance of Wall Structures," LVI-Tekniikan Laboratorio, Tiedonanto 54, Espoo.

Roulet, C. , J. Gass , I. Marcus and T. Cerkez. 1985. The Investigations on the On Site Measurement of the Thermal Transmittance of Building Elements. Lausanne : EPFL-GRES.

Courville, G.E. and J.V. Beck. 1989. "Techniques for in situ Determination of Thermal Resistance of Light Weight Board Insulations," Transactions of the ASME, Vol. 3

Silberstein, A. , C. Langlais and E. Arquis. 1990. "Natural Convection in Light Fibrous Insulating Materials with Permeable Interfaces: Onset Criteria and Its Effect on the Thermal Performances of the Product," Journal of Thermal Insulation, Vol. 14 (July).

1991. "Thermal Insulation — Building Elements—In situ Measurement of Thermal Resistance and Thermal Transmittance." Draft International Standard ISO/DIS 9869.2, International Organization for Standardization.

Norlén, U. 1992. Varmemotstånd hos en tjock isolering, Statens Institut for Byggnadsforskning.

Besant, R.W. and E. Miller. 1983. "Thermal Resistance of Loose-Fill Fiberglass Insulations in Spaces Heated from Below," Proceedings, ASHRAE/DOE Conference on Thermal Performance of the Exterior Envelopes of Buildings II, ASHRAE SP 38, pp. 720-733.

Langlais, C. , E. Arquis and D.J. McCaa. 1990. "A Theoretical and Experimental Study of Convective Effects in Loose-Fill Thermal Insulation, Insulation Materials: Testing and Applications," ASTM STP 1030, D. L. McElroy and J. F. Kimpflen , eds., Philadelphia, PA: American Society for Testing and Materials, pp. 290-318.

10.

Rose, W.B. and D.J. McCaa. 1991. "The Effect of Natural Convective Air Flows in Residential Attics on Ceiling Insulation Materials," Insulation Materials Testing and Applications, 2nd Volume, ASTM STP 1116, R. S. Graves and D. C. Wysocki , eds., Philadelphia, PA: American Society for Testing and Materials, pp. 263-274.

11.

Wilkes, K.E. and J.L. Rucker. 1983. Thermal Performance of Residential Attic Insulation, Energy and Buildings, 5:263-277.

12.

Wilkes, K.E. , R.L. Wendt , A. Delmas and P.W. Childs. 1991. "Attic Testing at the Roof Research Center-Initial Results," Proceedings of the Third International Symposium on Roofing Technology, National Roofing Contractors Association, pp. 391-400.

13.

Wilkes, K.E. , R.L. Wendt , A. Delmas and P.W. Childs. 1991. "Thermal Performance of One Loose-Fill Fiberglass Attic Insulation," Insulation Materials. Testing and Applications, 2nd Volume, ASTM STP 1116, R. S. Graves and D. C. Wysocki, eds., Philadelphia, PA: American Society for Testing and Materials, pp. 275-291.