Abstract:
Fuel and electrical characteristics of coal-peats found in
Faridpur and Khulna districts-of Bangladesh have been studied.
The suitability of the coal-peats for use as fuel and
for other technical purposes has been assessed on the basis
of its fuel value along with its proximate analyses and
electrical response of the samples .The results indicate
that the peat is technically feasible for domestic and
industrial uses. The electrical study involving the change
of resistivity with temperature ascertains that the peat
available in this region like other peats in the world have
the semi-conducting properties.
The high insulating character in the temperature region
(239.82- 279.41i)oC has been found,~Chanda Beel peats
and in the temperature regions (191.04 -346.2)oC; (29.3.57-
318.72)oC for two samples of Baghia Beel peats respectively
and (247.83 -346.20)oc for KOla Mouza peats, that
is, the resistivity increases with increasing temperature
in each case. Above the ranges of tempe~ature, i.e. for
temperature range ( 438.75 - 624) °c of Chanda Beel peatE'
(399.75 -536.72)oc (402.1€l-570.c[O)OC of Baghia Beelpeats
and ( 36G - 550)oc of r:ola !louza peat, the hydrocarbons and
other oxides of different materials are found to decompose
and the molecules of parent materials are structurally ordered.
Here a liquid mesophase is formed in each case of
and hence a sharp fall of resistivity is observed. This
sharp fall of resis tivity ascertail1.?the semiconducting
characters of the samples. It has also been found that
peat under 'investigation are structurally different in
different areas as indicated by resistivity vs inverse of
temperature curves.
