DAR ES SALAAM INSTITUTE OF TECHNOLOGY
DEPARTMENT OF MECHANICAL ENGINEERING
MEU 08209 : Renewable energy Technologies
Tutorial 4 : Biomass Energy Technology
1. What are the chief advantages of wood as a source of fuel?
2. Outline how photosynthesis works.
3. What are the principal disadvantages of the use of land for intensive
biofuel growth?
4. From a biomass perspective, describe combustion, pyrolysis,
gasification, fermentation and digestion.
5. How much of your country’s land area would be required to replace
fossil fuel use by biomass?
6. What is the chief constituent of the biogas in anaerobic digester
systems? Why are such systems so abundant in the developing
countries?
7. What are the three types of primary fuel are produced from biomass?
8. List the causes of incomplete combustion and explain how you can
improve combustion efficiency of wood.
9. As an Engineer, advance the community best recommended places for
draught animals use.
10.What are chief advantages and disadvantages of draught animals?
11.Discuss the physical and chemical properties of wood.
12.Describe the factors which affect proportions of charcoal in pyrolysis
process.
13.Describe the factors which affect Bio-digestion process.
Nyari E.A.
