The real thing

A new Coca-Cola bottling factory in Brazil has installed a cogeneration plant to provide it with a reliable source of much-needed heat and power. The plant, in Guararapes, is equipped with two Wärtsilä gas engines providing 3.6 MWe and 3.2 MWth.

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The factory requires its own energy supply due to frequent blackouts in the region.

Its processes include PET bottle manufacturing and the bottling of Coca-Cola and other drinks. When fully operational, its output will be 1.2 billion litres per year.

The power plant consists of two Wärtsilä 12V220SG gas engines. These 12-cylinder, 1.8 MW units operate at 1200 r/min. Hot water is recovered from the high-temperature coolant and lube oil. Steam is produced in an 8 bar[g] steam boiler, heated by engine exhaust gases. The steam is used in an absorption chiller for refrigeration purposes. The engines’ governing system enables the plant to operate in parallel with the grid, allowing the import and export of power.

Wärtsilä started work on the project in March 1999, working with a local partner to supply the plant.

The gas engine provides a reliable source of steam and power for the bottling factory
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Ramco refurbishes Indian power plants

India’s Ramco Group has ordered 16 generating sets to supply power to six factory sites. The units will replace a number of existing ageing high-speed diesel installations and will help the company lower fuel costs.

The MAN B&W Diesel-supplied gensets will be delivered to the Ramco sites during 2000. Ramco’s plans originally called for six new power plants to be constructed, each equipped with a 2.5 MW engine. However, the new genset units will now be mounted on the foundations of the six existing diesel installations, allowing a substantial amount of existing equipment to remain in use.

MAN B&W will supply ten type 6L23/30H gensets, each rated at 770 kW, and six type 7L23/30H gensets, each of 900 kW. The medium-speed units will run on heavy fuel oil.

MAN B&W says that it is receiving an increasing number of orders and enquiries for medium speed heavy fuel oil burning prime movers following a spate of orders in the 1990s for high speed engines. The heavy fuel oil, medium speed engines in the 500-2000 kW range tend to be more reliable.

South Pole Cat

National Electrical Systems, the equipment supplier to the Amundson-Scott Research Facility, has ordered a number of Caterpillar generating sets to provide power at the South Pole station. Six gensets, with a combined output of around 3.2 MWe, will be installed at the station during 2000 for baseload, peaking and emergency standby applications.

The Amundson-Scott Research Facility is already powered by a Cat 3412 genset rated to provide 500 kW of prime power. Recent staffing increases at the site have resulted in increased power demand. The station accommodates over 125 scientists during the summer and around 30 in winter.

Caterpillar has supplied three electronically controlled Cat 3515B prime power diesel gensets to the site. Each is rated at 1200 r/min to provide 750 kW of power. Another three sets, all Cat 3406 gensets rated at 1800 r/min and 320 kW of power, will also be supplied during 2000 for peaking and emergency standby applications. Start-up is scheduled for 2001.

The gensets will be installed in a new power facility at the research centre. One Cat 3512B will be paralleled with one Cat 3406 to provide prime and peaking power, and the remaining two 3512Bs will provide back-up and maintenance power. Two Cat 3406s will be housed in a separate facility and used for emergency power only. Engine waste heat will also be recovered for heating via a cogeneration system.

Several technicians at the site have been trained to carry out on-site routine maintenance of the equipment. The temperatures at the site, located on the Polar Plateau, averages -49.3°C (-56.7°F) and limits air travel in and out of the station.