System![]() System
Your home power station. An engineering marvel.Do you have natural gas or LPG? Are you intending to do without a voluminous reformer? Then have a SOFC in your fuel cell heating system. Become a power plant operator. To really get power and heat form a fuel cell, it needs a high-performance system around – the job of EBZ. Fuel Conditioning Natural gas or LPG seem to be clean fuels. However they containsubstances that are harmful for the fuel cell. An example is sulphurthat occurs naturally in the fuel or is added as odorant and has to beretained by the desulphuriser. The succeeding pre-reformer transformshigher-order hydrocarbons like propane, butane etc. by addition ofsteam to methane, hydrogen and carbon monoxide. Due to a spontaneouscomplete reforming at temperatures of 700 to 900°C inside the fuelcell, these gases are processed to power and heat. Heat Usage An apparent disadvantage of the SOFC is that not all of the gaseous fuel can be converted directly to power and heat inside the cells. This limitation is caused by its physical principle and can therefore not be avoided. Excess fuel will be directed to a special system integrated afterburner. The excess heat is applied for internal gas preheating and fuel processing. Furthermore it can be used externally for house heating and industrial tasks. Power Generation The stack containing the serial connected cells is generating a DC voltage. For grid-parallel operation, an inverter is applied to feed the electrical power into the public grid. For on-board power supply of large vehicles the inverter usually fulfils 42 Volt requirements in combination with a backed battery. |

