OnDoc
| sign
in
up
~
pub
|
pdf
txt
html
toc
url
|
<<
>>
1
2
3
4
5
6
7
8
~
21
Table of Contents
(Published as a Chapter (No. 4) in book “Alternative Energy in Agriculture”, Vol. II, Ed. D. Yogi Goswami, CRC Press, 1986, pgs. 83-102.). (Author's comments: Since publication of this chapter lot of work in gasification has taken place in our lab. Please see; http://nariphaltan.virtualave.net/Gasifier.pdf )
BIOMASS GASIFICATION
I INTRODUCTION
Table 1. Advantages and Disadvantages of various Gasifiers
Updraft
Downdraft
Crossdraft
The following major reactions take place in combustion and reduction zone12.
Fuel
Volume Percentage
Avg. calorific value of 1 kg of fuel
Fuel
Pieces 2-5 cm,
Cubed,
m.c. = 11.9%
Cubed,
m.c. = 20.6%
Rice hulls
Safflower
Sugarcane
Walnut shell
Walnut shell
Pelleted.
Wheat straw
Wheat straw and corn stalks
Wood blocks
Wood chips
It should be noted that in general the overall efficiency of the IC engine itself does not change though the power derating takes place. However, detailed comparison of the engine efficiencies with and without producer gas has not been done till now because of insufficient data and large variations in producer gas composition30. Thus a conservative figure of 15-20% can be used as efficiency of spark ignition engines.