 | Low Cost Charcoal Gasifiers for Rural Energy Supply (GTZ, 1994, 49 p.) |
 |  | (introduction...) |
| | Foreword |
| | 1. What? Gasifiers? |
| | 2. Gasification in recent history |
| | 3. Small gasifier-engine systems for rural energy supply in developing countries |
|  | 4. The trouble with ''field applications'' |
| | 4.1 Weak points of gasifier-engine-systems |
| | 4.2 The problem of ''acceptance'' |
| | 5. Lowering plant costs by ferrocement construction |
| | 5.1 What makes a gasifier expensive? |
| | 5.2 The construction of a ferrocement gasifier |
| | 6. Technical performance of the ferrocement gasifier |
| | 6.1 Design details |
| | 6.2 Performance data |
| | 7. Derived technical demands for field application of gasifier-engine systems |
| | (introduction...) |
| | 7.1 Issues in engine operation |
| | 7.2 Typical applications |
| | 7.3 Repair and maintenance of the ferrocement gasifier |
| | 8. Non-technical aspects of gasifier operation in the field |
| | (introduction...) |
| | 8.1 Pro's and contras of the ''do it yourself'' approach |
| | 8.2 Community plant or private ownership? |
| | 8.3 Qualification and motivation of the operator |
| | 8.4 Implications of non-technical issues |
| | 9. Economics of gasifier operation |
| | 9.1 How to compare gasifier costs |
| | 9.2 Case study: Comparative costs of gasifier installations in Argentina and Malaysia |
| | 10. Concepts of future dissemination of small gasifier-engine systems |
| | 10.1 Perspectives of biomass energy |
| | 10.2 The actual limits of gasification technologies |
| | 10.3 Substitution of firewood by other biomasses |
| | 10.4 Framework for establishing gasification technologies |
| | References |
5.2 The construction of a ferrocement gasifier
A typical working schedule is the following:
First week
Final check of available materials and tools, completion.
Wiring of inner cylinders, top attachments, ash ports, covers. Ordering of metal parts, to be prepared in the workshop (fuel bunker, grid, shroud). Preparation and leveling of the platform for the gasifier.
Second week
Plastering of inner cylinders and attachments. Wiring of outer tank, plastering of outer tank. Construction of refractory cylinder and refractory disc. Curing of plastered parts. Begin of assembly of the inner cylinders in the cooling tank.
Third week
Completion of final assembly, water leak proofing.
Installation of the grate and the metal shroud Installation of the engine with gas-air-mixer and gas inlet manifold adapter.
First tests of gas production, run by an electric fan.
Installation of fabric filter bags, first test runs with engine suction.
Last modifications on the gasifier-engine-genset.
Fourth week
Commissioning of the gasifier-engine-genset. Test runs with engine without load.
Demonstration of alternative starting procedures:
- by suction fan
- by suction manifold from engine
- by stove mode
Demonstration to personnel in optimum operation and maintenance of the ferrocement gasifer.
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