Dr. ING. HINRICH MOHR B+V INDUSTRIEJECHNIK Russian Natural Gas LCV Natural Gas ıır Sewage Gas Caıverter Gas Pyrolsysis G as ■CnHm DCSHlZ DC4H10 DC3H8 DCZH6 DCH4 DHZ DHZS ■CO DCOZ DNZ DOZ DO1hers Diagram 1 Typical Fuel Gas Compositions gases, originating from natura! sources as well as from technical processes. Compared with standard natura! gas, they often contain large amounts of inert components This sophisticated planı is used for electrical power generation as well as for heating and cooling purposes and is able to operate on three different fuels. it is integrated like nitrogen or carbon-dioxide, causing a noticeable decrease in the fuel gases lower heating value (LHV). Diagram 1 shows examples of typical fuel gas compositions which can be utilized in BVl's DFC-engines. The burning components of fuel gases from natura! origins (e.g. LCV natura! gas, mine gas) or biological processes (sewage gas, biogas) are mainly methane and - in distinctly smaller quantities - higher hydrocarbons. Fuel gases from technical production processes (e.g. converter gas, pyrolysis gas) differ from the aforementioned and consist of hydrogen and carbonmonoxide as the main burning components, which causes another burning characteristic in the engines. in Diesel mode it is possible - besides standard Diesel fuel -to utilize Domestic Fuel Oil (Fuel Oil No. 4), a special brand in Turkey, biogenic fuels (e.g. rape seed oil) or- especially with the DFS-engine type - Heavy Fuel Oil (Fuel Oil No. 6). it should be mentioned, however, that a direct switch-over from Diesel operation to gas mode is not always feasible with such fuels (except standard Diesel fuel), due to possible soot depositions in the cylinders which may cause uncontrollable combustion cylces in gas mode. A typical example for BVl's CHP engine planı technology is the Hamoglu planı in Turkey.ln April 1 999, B+V lndustrietechnik as the general contractor handed over the CHP engine planı to the private customer Hamoglu ■ A typical example tor BVl's CHP engine plant technology is the Hamoglu plant in Turkey.ln April 1999, B+V lndustrietechnik as the general contractor handed over the CHP engine plant to the private customer Hamoglu Holding, who were acting as BVl's cooperation partner, responsible tor the Turkish subcontractors' work during the erection. ■ into the power and heat supply of a luxury hotel, a large shopping center and a brick factory. The planı is located in Silivri, West of lstanbul at the coast of the Marmara Sea. The centerpiece of the planı is the BVI medium-speed dual-fuel engine, type 18 PC 2-5 V DFC with a directly coupled generator operating at 500 rpm. This engine produces an electrical output of 7.7 MW at the generator terminal and almost 8 MW of thermal power. it can be operated on natura! gas or diesel fuels. As an extra option, domestic fuel oil - the local HFO - can also be used after installing the respective equipment. Because of the instability of the Turkish main power grid the planı is also able to operate in island mode to ensure power supply under ali conditions. The heat of the engine can be used for different purposes. The cooling water, the first stage of charge-air and the exhaust gases are utilized in the high temperature circuit, which is operating with a flow temperature of 115 °C and a return temperature of 80 °C. The system's thermal power of approximatel� 7.1 MW can be utilized for heating the hotel and the shopping center, or alternatively for two absorption chillers with a refrigerating output of 5.0 MW for air conditioning the hotel and the shopping center. The heat of the lube oil (about 0.7 MW) is transf cuit (4e5r rGeCd /v3 5i a Gt hCe) mt oehdei uamt utpe mt hpeesr ae tr uv ri ceec i r water of the hotel. Normally, only the heat Holding, who were acting as BVl's cooperation partner, responsible for the Turkish subcontractors' work during the erection. of the second stage of the charge-air cooler is transferred to the hybrid-cooling tower. Under full load conditions, it is pos- __11 E-COGENERATION WORLO & Renewoble Energy
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