How electrical engine power load and feedstock moisture content affect the performance of a fixed bed gasification genset
Huchon, Valentin | Pinta, François | Commandré, Jean-Michel | Van De Steene, Laurent
Performance of wood gasification genset is sensitive to the moisture content in the feedstock and the electrical load (demand of users). This study investigates the influence of these process parameters on the electrical efficiency of the genset (ηgₗₒbₐₗ), the electrical engine efficiency (ηₑₙgᵢₙₑ), the cold gas efficiency (CGE), and the syngas composition. Experimental tests were carried out by varying the moisture content from 11% to 23% and the electrical power from 4.7 kW to 12.8 kW on a commercial gasifier equipped with precise measuring tools. The increase of the performance when the electrical load is increased or when the moisture content in the wood chips is decreased is both quantified and discussed. Such behaviour was mainly explained by differences in engine filling rates and reactor temperatures.
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