Constant Volume Burning Characteristics of HHO Gas
There has been much interest during the last decades in the use of hydrogen as supplement with classical or alternative fuels for internal combustion engines. The dual fuel engine can achieve better efficiency and emissions and can be simply retrofitted to existing engines. One of the main limitations in using the hydrogen addition to the main fuel at car engines is its generation and/or storage on board. To avoid the storage problems, in the last years the possibilities of the on board continuously hydrogen production were intensively studied. The hydrogen production by water electrolysis using the engine output as a source for energy needed appeared thus as a technical solution to be explored. Recently, an apparently new mixture of hydrogen and oxygen gas called HHO has been developed by Hydrogen Technology Applications Inc. of Clearwater Florida. The new HHO gas is produced by a special dynamic alkaline electrolysis of water. The new type of electrolyzer is presented as remarkable by its efficiency of gas production. The HHO gas composition would include among the conventional hydrogen-oxygen mixture and other hydrogen-oxygen compounds. The present work presents an experimental study of the burning characteristics of HHO gas in comparison with stoichiometric hydrogen-oxygen mixture. Experiments were conducted in a constant volume bomb, at 2 bar initial pressure and the results are thus valid at high pressures and temperatures. The laminar burning velocities were evaluated based on pressure-time measurements. A general survey of the combustion process and a check of the model used to calculate the burning velocity were obtained by the record of the successive positions of the flame front using a Schlieren visualization technique. It was found that the burning characteristics of the two gases are close, with somewhat lower chemical activity of the HHO gas. This is evident by a longer phase of flame kernel formation and development and by a 5% lower laminar burning velocity. Another group of experiments were carried out in a heated bomb, to find the selfignition limits of HHO gas.
water electrolysis HHO gas laminar velocity detonation selfignition
BIRTAS Adrian VOICU Iulian CHIRIAC Radu APOSTOLESCU Nicolae PETCU Cristian
University POLITEHNICA of Bucharest, Romania ROKURA Aplicatii Industriale SRL Bucharest, Romania
国际会议
2009 International Autumn Seminar on Propellants,Ezplosives and Pyrotechnics(2009国际推进剂、炸药、烟火技术秋季研讨会)
昆明
英文
1-7
2009-09-22（万方平台首次上网日期，不代表论文的发表时间）