Mineral Wool

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ISBN: 9781845694067 | 1845694066
Cover: Hardcover
Copyright: 5/29/2008

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Mineral wool has a unique range of properties combining high thermal resistance with long-term stability. It is made from molten glass, stone or slag that is spun into a fibre-like structure which creates a combination of properties that no other insulation material can match. It has the ability to save energy, minimize pollution, combat noise, reduce the risk of fire and protect life and property in the event of fire. Mineral wool: Production and properties is suitable for engineers, researchers and for graduate and postgraduate students who want to broaden their knowledge of experimental methods in this field.

Preface	p. ix
Introduction	p. 1
Melting the Raw Materials	p. 8
Cupola furnace operation	p. 8
Processes and chemical reactions in the cupola furnace	p. 10
Influence of underdraft on cupola furnace operation	p. 12
Measuring temperature and concentrations in the cupola furnace	p. 15
Multiple Regression	p. 19
Hypothesis testing in multiple linear regression	p. 21
Coefficient of determination	p. 22
Other linear and non-linear models	p. 23
Computer printout	p. 23
Physical Characteristics of Mineral Wool Melts	p. 28
Density	p. 29
Density of silicate melts	p. 30
Viscosity	p. 32
Viscosity of silicate melts	p. 34
Methods for measuring viscosity of silicate melts	p. 36
Surface tension	p. 40
Surface tension of silicate melts	p. 41
Methods for measuring surface tension of silicate melts	p. 41
Computing algorithm for calculation of density, viscosity and surface tension of mineral wool melts	p. 45
Dimensional Analysis	p. 48
Foundations of dimensional analysis	p. 48
Full set of dimensionless numbers	p. 50
Fiberisation Process	p. 54
Dimensional analysis of the fiberisation process on a double-wheel spinning machine	p. 55
Experimental results	p. 59
Statistical analysis of experimental results	p. 60
Simulation of chemical composition's influence on fibre thickness	p. 61
Regression model of mineral wool fibres on a four-wheel spinning machine	p. 65
Regression model of fibre formation in a four-wheel spinning machine	p. 68
Experimental results	p. 69
Statistical analysis of experimental results	p. 70
Cooling of glass fibres	p. 71
Trajectories of mineral wool fibres	p. 74
Numerical analysis	p. 77
Visualisation Method in Real Production Processes	p. 81
Monitoring the production process	p. 83
Identifying the jet image	p. 85
Detection of boundaries	p. 86
Gradients at jet boundaries	p. 88
Gradient establishment	p. 89
Reconstruction of the jet and its trajectory	p. 91
Observation of jet centre line between wheels	p. 95
Experimental results	p. 96
Centre line	p. 97
Fluctuation and centre line	p. 97
Fluctuation of grey levels in the selected field	p. 98
Evaluation of mass flow of melt	p. 99
Applying the Visualisation Method to Measuring the Thickness of Mineral Wool Fibres	p. 106
Experimental results of fibre diameter on a double-wheel spinning machine	p. 110
Influence of Melt Film Temperature on the Fibre Diameter Distribution in Mineral Wool Produced by A Double-Wheel Spinning Machine	p. 113
Thermovision of the spinning wheel melt film	p. 114
Experimental results	p. 116
Formation of the Primary Layer	p. 121
Influence of blow away velocity field on the primary layer fibre structure in the mineral wool production process	p. 124
Velocity field measurements on the nozzles of a four-wheel spinning machine	p. 125
Velocity field structure in the transition region through the perforated mesh of the collection chamber	p. 131
Visualisation method for measuring the primary layer	p. 133
Regression model of mineral wool primary layer homogeneity	p. 137
Experimental results	p. 138
Statistical analysis of experimental results	p. 138
Numerical Analysis of Flow Properties in the Collection Chamber	p. 141
Numerical analysis	p. 142
Simulation set-up	p. 146
Experimental determination of boundary conditions	p. 147
Numerical results of flow properties in the operating collection chamber	p. 147
Numerical simulation of modified geometry of the collection chamber	p. 150
Local distribution and spectral analysis of the primary layer structure	p. 152
Quality of the Primary Layer and its Influence on the Final Product	p. 157
Experiments	p. 158
Measurement of the specific density of the final product	p. 158
Regression model of the specific density of the final product	p. 160
Statistical analysis of experimental results	p. 160
Curing Chamber	p. 163
Measurements of mineral wool layer temperature characteristics along the curing chamber	p. 167
Measurements of aerodynamic resistive characteristics of mineral wool layer	p. 170
Diagnostics of local homogeneities in the mineral wool layer	p. 173
References	p. 179
Index	p. 184
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Mineral Wool

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