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Online since: September 2008
Authors: Gerd Wegener, Elisabeth Windeisen
This band is
dedicated to an uronic acid, which becomes modified and shows the "normal" band for the C1 in
sugar units primarily after the treatment.
1518
927
1737
1605
1334
1247
896
1.0
1800 1600 1400 1200 1000
Absorbance
1800 1600 1400 1200 1000
Wavenumber (cm-1)
0.5
1046
1770 A-200
A-Ref
1518
927
1737
1605
1334
1247
896
1.0
1800 1600 1400 1200 1000
Absorbance
1800 1600 1400 1200 1000
Wavenumber (cm-1)
0.5
1046
1770 A-200
A-Ref
Figure 6: FTIR spectra of cold water extracts of ash before and after thermal treatment
Further analyses of the water extracts concerning the composition of polysaccharides are shown in
Figures 7 and 8.
Online since: January 2016
Authors: Rastislav Menďan
. – Measured basic thermotechnical parameters of clay wall
Sample Number
r
[kg/m3]
wm
[%]
c
[J/(kg.K)]
l
[W/(m.K)]
1
1577,2
3,21
1030,9
0,622
2
1587,1
2,44
896,6
0,652
3
1388,6
2,66
1165,2
0,610
4
1421,7
3,26
957,3
0,572
5
1564,2
2,57
1035,0
0,590
6
1640,3
4,60
1239,4
0,827
7
1333,6
2,30
1175,8
0,471
8
1619,8
2,03
642,1
0,649
Average
1516,5
2,88
1017,8
0,624
Comparing mean heat conductivity coeficient from Table 3. determinated by measure of l = 0,624 W/(m.K) with the value calculated by equation (formula) (2) l = 0,651 W/(m.K) it is possible to point out that those two values are quite close to each other (similar), the differences between them is only 4,33 % which is in accordance (conformable) with measurement accuracy.