Page last updated 30/08/2018
The
KVIC design uses a metal gas holder
that floats in the slurry. Biogas is stored and used
as the drum rises and sinks in the slurry.
The
Dome design
uses a fixed dome made from masonry (brick or concrete) over the
digester.
Gas storage is obtained by pushing slurry into a reservoir pit
,
which flows back as
gas is used. This is called
the “displacement” or “hydraulic” principle
.
There are three versions of the dome design:
1
.
The “Janata” or “cast in place”, with a dome made from concrete
(
GGC 2047
in Nepal);
2
.
The “
Deenbandhu
” or “non-mould rolling dome”, with a
dome made from bricks
.
3.
The “Suntala” plant, with a
dome cast over a metal mould
.
There are two ways of defining the size of a biogas plant, the first is the expected daily gas
production, the second is the internal volume. The daily gas production depends on the feed
material and slurry temperature, so is not an absolute measure. The total internal volume
(tiv) can be calculated from the dimensions of the plant.
The shape and dimensions are given for three different designs:
1
.
The
floating drum KVIC design
;
2
.
The
fixed dome Deenbandhu design
made of brick; and
3
.
The
fixed dome
GGC 2047 design
, made from concrete.
Technical design
Floating drum biogas plant
in Nepal
Brick dome biogas plant
Bangladesh
Concrete dome biogas
plant Nepal
Suntala dome biogas
plant India
The displacement principle
showing how gas is stored in a dome plant
Small-scale
Handbook
Resources
Abstracts-1
Abstracts-2
Abstracts-3
Abstracts-4
Abstracts-5
Abstracts-6
running
running-1
Technology
Technical Design
Design
Drum
Brick Dome
Concrete Dome
Equations
Models
First Order
Technology
History
Developments
Future
Consulting
Examples
Company Information
Contact
Page last updated 30/08/2018
Technical
design
The
KVIC design uses a metal gas holder
that floats in the
slurry. Biogas is stored and used as the drum rises and sinks
in the slurry.
The
Dome design
uses a fixed dome made from masonry
(brick or concrete) over the digester.
Gas storage is obtained
by pushing slurry into a reservoir pit
,
which flows back as gas
is used. This is called
the “displacement” or “hydraulic”
principle
.
There are three versions of the dome design:
1.
The “Janata” or “cast in place”, with a dome made from
concrete
(
GGC 2047
in Nepal);
2
.
The “
Deenbandhu
” or “non-mould rolling dome”, with a
dome made from bricks
.
3.
The “Suntala” plant, with a
dome cast over a metal
mould
.
There are two ways of defining the size of a biogas plant, the
first is the expected daily gas production, the second is the
internal volume. The daily gas production depends on the
feed material and slurry temperature, so is not an absolute
measure. The total internal volume (tiv) can be calculated
from the dimensions of the plant.
The shape and dimensions are given for three different
designs:
1
.
The
floating drum KVIC design
;
2
.
The
fixed dome Deenbandhu design
made of brick; and
3
.
The
fixed dome
GGC 2047 design
, made from concrete.
Drum plant
Brick dome
Concrete dome
The displacement principle
showing how gas is
stored in a dome plant
Home Page
Small-Scale Programmes
Small-Scale
Handbook
Resources Used
Abstracts-1
Abstracts-2
Abstracts-3
Abstracts-4
Abstracts-5
Abstracts-6
Running a Programme
Running
Handbook
Technical Aspects
Design Aspects
Dome plant
Brick Dome
Concrete Dome
Design Equations
Process Models
First Order Model
Background
Technology
History
Developments
Future
Experience
Consulting
Consulting
Examples
Company
Company
Contact