“…On the other hand, regarding moisture, the authors recommend that the moisture content of the biomass be as low as possible, and although this has little impact on the composition of the syngas and, consequently, on the lower heating value (LHV) of syngas when an external heat supply is available, if this is the most significant parameter in gasifier performance: the higher the humidity, the lower the cold gas efficiency (CGE). The CGE is a performance parameter, which is defined as the amount of energy contained in the clean gas with respect to the energy of the feed biomass, that is, it is the percentage of feed biomass energy still present clean syngas [ 12 ]. This occurs because feedstock with higher moisture content produce a smaller syngas flow rate, leading to a reduction in CGE [ 13 ].…”