- medium- or high-pressure gasholders (8 - 10 bar/200 bar)
Neither system can be considered for use in small-scale biogas plants. Even for large-scale plants,
they cannot be recommended under the conditions anticipated in most developing countries. High-
pressure gas storage in steel cylinders (as fuel for vehicles) is presently under discussion. While
that approach is possible in theory, it would be complicated and, except in a few special cases,
prohibitively expensive. It would also require the establishment of stringent safety regulations.
Table 5.12: Properties of plastic sheeting - gasholder suitability ratings (Source: UTEC 1985)
Description Mechanical properties
Stability/resistance values
Application
g/m² mbar N
-
°C - - - cm3Xmm
m2 XdXat
1
23
4
5 6 7 8 9 10 11 12 13
Solid PV 1400 42
50 -
90/65 o
-/o +
365/1 HF,
-
C 300 HW,
HA
sheetin
HT, C
g
per PE 950 42
100 -
90/ -/o o
o 760/4 HF,H -/o
1.0- 70 88 W,HA
mm
thick-
ness IIR 1300 9
32 +
170/1 ++
+
o 290/2 HV,FF, +
10 30 C
EP 1200 4
32 +
170/1 ++
+
o 3200 HV,FF, +
DM 20
C
Lamina PV 750/ 59-
240- ++
90/65 o
-/o +
310/- HF,H +
ted C
W,HA,
syn 1400 80 300
HT,
thet C
ic
fabr CPE 1100
-
70 +
++
165/20 HF,H
ics 0 W,H
A
of CS 1100
++
140/9 ++
+
o 290/3 HV, C +
various M
0 70
thickne CR 1100
++ 90 ++ +
o 1010/ HV,C ++
ss 720
62