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Keywords: convection
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7527-3
... in the large hydrocarbon fire environment, and in conduction losses from the gage sensor plates. The importance of these sources of discrepancy varied depending on the magnitude of the measured heat flux and on whether the gages were located in a radiation-dominated or mixed radiative-convective environment...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2007
ISBN-10: 0-8031-3422-3
ISBN: 978-0-8031-3422-5
...-meter with controlled air flow has been used to determine total heat-flow rates as a function of air-flow rate, air-flow direction, and temperature for commonly used wall cavity insulation. thermal resistance fiberglass convection convection in porous insulation fiberglass batts David W...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-1987-9
ISBN: 978-0-8031-1987-1
... that thermal and moisture transfer do not correlate with each other: for one sample, even if the wide sleeve has a much higher thermal insulation than the narrow one, the water vapour resistance is much lower. clothing comfort thermal resistance water vapour resistance ventilation convection...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1991
ISBN-10: 0-8031-1420-6
ISBN: 978-0-8031-1420-3
... We relate experiments carried out both in the lab, in a guarded hot box, and in experimental test houses. It is shown that forced convection does not significantly affect the thermal properties of the insulation under the air velocities usually found in the cavities, unless the construction mode...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1278-5
ISBN: 978-0-8031-1278-0
... Experimental results obtained by guarded hot box testing of low density loose-fill insulations have been analyzed using convective models. Closed and open specimens have been studied in an attic configuration with heat flow up. Experiments were conducted with and without a transverse air flow...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1396-X
ISBN: 978-0-8031-1396-1
... medical CT technology can be used effectively to measure tracer concentration in flow experiments in saturated sand. The results of ICP analyses support the CT results. The ICP results also clarify the limitations of the CT procedure used here. porous media flow convection dispersion tracers...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1989
ISBN-10: 0-8031-1184-3
ISBN: 978-0-8031-1184-4
... transfer conduction convection radiation control J. A. Mason, 1N. Bainbridge, ~and P. J. H. Heiferz Calibration Problems in the Direct Measurement of Radiation Absorbed Dose REFERENCE: Mason, J. A., Bainbridge, N., and Heifer, P. J. H., "Calibration Problems in the Direct Measurement of Radiation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1987
ISBN-10: 0-8031-0493-6
ISBN: 978-0-8031-0493-8
... is to consider heat transfer in the apparatus, to supply some rough practical tips to aid in understanding the apparatus performance, even though much more has to be done to reach the same level of knowledge achieved for the guarded hot plate apparatus. Convection heat transfer is considered first. Theoretical...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1983
ISBN-10: 0-8031-0230-5
ISBN: 978-0-8031-0230-9
.... thermal insulation loose-fill insulation thermal resistance heat flux convection mineral fiber insulation cellulosic insulation blown insulation D. W. Yarbrough^ and I. A. Toor^ Effect of Air Movement on Thermal Resistance of Loose-Fill Thermal Insulations REFERENCE: Yarbrough, D. W. and Toor, I...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1983
ISBN-10: 0-8031-0230-5
ISBN: 978-0-8031-0230-9
... circulation through the insulation by convection. Although thermal bridging has received much design attention, it has recently come to light that actual placement of the insulation and design for its proper placement may be the most serious problem. This paper describes tests on typical commercial building...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1983
ISBN-10: 0-8031-0230-5
ISBN: 978-0-8031-0230-9
... fibers anisotropy calcium silicate cementitious products ceramic fibers compression convection environmental conditions field studies flaws forced convection gaseous conduction heat flow direction heat transmission industrial systems installation load mass transfer mean free path...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1982
ISBN-10: 0-8031-0724-2
ISBN: 978-0-8031-0724-3
... and Steel Institute. radiation convection emissivity flame shape fire load density fire severity burning rate fire temperatures fire compartment geometry ventilation forced draft flame plume buoyancy horizontal flame projection effective flame boundary natural draft flame axis...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1980
ISBN-10: 0-8031-0794-3
ISBN: 978-0-8031-0794-6
... of the standard calibration specimen have been outlined. Areas requiring further research are indicated. insulation heat flux effective conductivity convection permeability porous medium guarded hot plate two-specimen heat meter apparatus scattering parameter two flux model thermal insulation R...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1978
ISBN-10: 0-8031-0275-5
ISBN: 978-0-8031-0275-0
... estimation of crosswind spread in quasi-ideal boundary-layer flow is briefly summarized. Recent considerations of the behavior of the crosswind component of turbulence in the surface layer and new developments from laboratory modeling of horizontal dispersion in convective mixing are noted. A brief survey...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1978
ISBN-10: 0-8031-0589-4
ISBN: 978-0-8031-0589-8
... convection heat-transfer models M. Bertasi,^ G. Bigolaro,^ and F. De Ponte^ Fibrous Insulating Materials as Standard Reference Materials at Low Temperatures REFERENCE: Bertasi, M., Bigolaro, G., and De Ponte, F., "Fibrous Insulatiiig Materials as Standard Reference Materials at Low Temperatures," Thermal...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1978
ISBN-10: 0-8031-0589-4
ISBN: 978-0-8031-0589-8
... that would occur in roof spaces. In a more realistic roof cavity, this optimal pitch would be smaller; it is suggested that full-size nonventilated roofs be designed with pitches near 15 deg. heat transfer pitch angle roof thermal insulation convection triangular cavity thermal conductivity T...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1974
ISBN-10: 0-8031-0372-7
ISBN: 978-0-8031-0372-6
... simultaneously to calculate actual conditions of heat transfer in porous media from recent theoretical analysis. It is shown by computation of filtration Rayleigh Number from these results that it is possible to design insulating structures to minimize convective heat transfer. thermal insulation heat...