Piston power |
Both companies recently conducted a joint research and development programme together with the Large Engines Competence Center (LEC). The group’s findings were summarised in a paper – “Development of lubricants for hydrogen-fueled large engine power plants” – which was selected to be presented at the 2023 CIMAC Congress in South Korea in June 2023.
Currently, Jenbacher engines have the potential to operate on a broad range of energy sources, from pipeline gas to hydrogen. However, due to hydrogen’s different combustion properties – including a wider flammability range and lower ignition energy – it requires tailored lubrication solutions.
As part of our co-operation, ExxonMobil has developed a new high-performance engine oil to enable more controlled hydrogen combustion at higher loads. This technology has been through
a dedicated lubricant screener test on several of Jenbacher single cylinder and multi-cylinder engines. As a result, the lubricant technology platform has been proven to meet the performance requirements of current and next- generation Jenbacher high power output engines, including hydrogen engines.
Unlocking progress, together As the energy transition continues to accelerate, it’s critical that engine OEMs, lubrication companies and other suppliers can respond rapidly and flexibly to changing customer needs and environmental regulations. These considerations were built in from the outset in the ExxonMobil–INNIO relationship, all fuelled by a mutual commitment to help operators reach new performance levels both today and tomorrow.
1
Results may vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used.
2
INNIO and Jenbacher are trademarks in the European Union or elsewhere owned by INNIO Jenbacher GmbH & Co OG names are property of their respective owners.
3
Refers to a Jenbacher J 612 F engine and is based on the experience of a single customer. Actual results can vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used. Extended used oil life is based on normal use of the product, as described in the technical instructions from INNIO.
4
Based on the experience of multiple customers during type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used. Extended used oil life is based on normal use of the product, as described in the technical instructions from INNIO.
Long term service agreements for improved reliability
Wärtsilä has signed a ten-year guaranteed asset performance agreement with US utility Omaha Public Power District (OPPD). The agreement covers the 150 MW Standing Bear Lake power station in Omaha, Nebraska, which is scheduled to enter commercial service in 2024. The power plant will provide dispatchable balancing power as part of the utility's Power with Purpose project, an initiative designed to add 400 to 600 MW of utility-scale solar generation and 600 MW of balancing natural gas generation. The aim of the utility is to reach net-zero
carbon emissions by 2050. By ensuring operational reliability for the plant, the agreement supports these efforts, says Wärtsilä, with fast- starting balancing power to rapidly compensate for fluctuations in the supply of renewables. The supply to the grid is therefore assured regardless of the conditions.
The power plant is equipped with nine Wärtsilä 18V50DF dual-fuel engines which can use natural gas and light fuel oil as needed. The engines can be converted to carbon neutral fuels as they become available, Wärtsilä notes.
Under the agreement, Wärtsilä will provide site services and also support through connection to the Wärtsilä Expertise Centre in Houston, Texas, enabling remote support, maintenance planning, and predictive maintenance intelligence.
Reliability in Senegal
Above: Wärtsilä 50DF dual-fuel engine. © Wärtsilä Corporation
Another long term service agreement Wärtsilä has reported recently is that signed with ContourGlobal (now owned by Kohlberg Kravis
Above: Cap des Biches power plant, Dakar, Senegal (Photo: Contour)
Roberts) covering its Cap des Biches power plant in Dakar, Senegal. The 86 MW recip based plant dispatches power to the national electricity distributor Senelec, and reliability of supply is essential.
The scope of the agreement includes all spare parts for major overhauls of the engines at Cap des Biches, optional field service personnel to carry out maintenance tasks, along with a guarantee limiting the downtime during scheduled maintenance procedures.
MAN ES engines in Borneo will run on CNG
MAN Energy Solutions has won a contract to supply 4 × MAN 51/60DF dual-fuel engines to a new power plant in the Malaysian state of Sabah, on the island of Borneo. The scope of supply includes 3 × 18V51/60DF and 1 × 8L51/60DF engines, which, as gensets, will provide a total of 65 MW of generating capacity.
Above: MAN ES 18V51/60DF engine
Currently under construction in an industrial zone near the city of Kota Kinabalu in northern Borneo, the new power plant will provide a reliable and flexible electricity supply to a
36 | September 2023|
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factory producing solar glass for PV modules for end-customer, Kibing Solar.
The four engines can operate on liquid fuels but will mainly run on natural gas in the form of compressed natural gas (CNG). CNG consists largely of methane (CH4
) and is compressed
to less than 1% of the volume that natural gas occupies at normal atmospheric pressure. Furthermore, CNG is easily transported by ship and truck, and is particularly suitable for supplying remote areas that do not have their own natural gas or LNG infrastructure.
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