7
Machines for generating electrical power; Filtering machines for biofuel, biogas, biomethane, purge gas, synthesis gas, gas; Apparatus and instruments for processing and conditioning biofuels, biogases, biomethane, purge gases, synthesis gases, gases; Apparatus and instruments for the generation of electricity
11
Machines for the generation of heat; Apparatus and instruments for generating heat; Apparatus and instruments for the production, conditioning and distribution of heat from renewable sources (in particular biogases, biomethane, purge gases, synthesis gases, gases); Heat regenerators; Heat accumulators; Heat generating apparatus; Combustion installations for biofuels, biogases, biomethane, purge gases, synthesis gases, gases; Gas heat generators; Gas combustion installations; Regulating and safety fittings for gas apparatus and pipes; Pressure relief apparatus for use with gas installations; Apparatus and instruments for controlling the flow of gases; Purification installations for waste material; Heating apparatus for use in the treatment of waste material; Combustion apparatus and instruments for biofuels, biogases, biomethane, purge gases, synthesis gases, gases