Evaluation of an SI engine running with gas of flow power heat trate from gasification of rice husk / Avaliação do funcionamento de motor ice com gas de baixo poder calorifico proveniente da gaseificação de casca de arroz

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Nowadays there is a great waste of organic matters, residues and other substances that could be used in a power plant. Examples can mainly be observed in the whole world and in regions where the poverty reigns and where the electric energy could be of great aid.The use of small power generation plants integrated to a gasification with an internal combustion engine (Integrated Gasification Combustion Engine-GCE) of cycle OTTO and adapted to operate with low power heat rate gas, consists an interesting and economical viable alternative, that makes possible the independent production of electric and thermal energy. For the exploitation of residues of BIOMASS, as the rice husk, we used a gasification process that is a form to increase the energy use of the biomass. The gasification can generate thermal energy and electric energy. It was used gasifier of fluidized bed from UNICAMP, where it was installed an engine with of 5,965 liters and 6 cylinders, with compression rate 12:1(cycle OTTO),which was originally used in vehicles powered by compressed natural gas, to running with the gas of low power heat rate (46 MJ/Nm3) produced by gasifier. Typical experimental result. Power (kW)=40,7@1800rpm; Advance (Degrees)=30; Exhaust gas temperature(°C)=596; Lambda=1,12; Maximum Combustion Pressure (PA)=4000000. During the running of the engine, the necessity of some alterations in some components was verified as well changes in the advance regulations. A system to increase the pressure of the gas proceeding from the gasifier and a system of start are necessary. In this way we would have an engine to operate as generating group and to be part of a pilot plant for generation of eletric energy for gasification of biomass in agricultural and interior cities

ASSUNTO(S)

gaseificação rice husk lower power heat rate biogas gas biomassa gas de gasogenio gaseification biomass natural gas engine cycle otto cinza de casca de arroz

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