Steam Plant Optimization Topic At New York Port Engineers Meeting
The recent meeting of The Society of Marine Port Engineers New York, N.Y., Inc. heard a paper titled "Steam Propulsion Plant Optimization for Slower Steaming" presented by Chester W. Scott Jr., senior thermal systems engineer at General Electric's Marine Turbine & Gear Department in Lynn, Mass. "Almost all steamships operating today can and have, over the past few years, improved fuel consumptions to some degree through various energy conservation opportunities and measures," Mr. Stott stated.
"The most effective measure for savings has been due to a complete overhaul, cleaning, repair, and tune-up of all plant equipment to restore the plant to neardesign conditions. This has resulted in savings of 5 to as much as 15 percent, attesting to the neglect which some turbine plants have suffered while fuel was cheap.
Despite their reduced efficiency, the ships have been reliable and operable, displaying a ruggedness to abuse and a tolerance to fuel degradation unmatched by any other propulsion machinery," he said.
"A subsequent measure requires strict observance of proper operating procedures for each vessel as determined by close cooperation between management and operating sea personnel. The lack of a dedicated modern program of maintenance and repair will defeat this opportunity and the previous losses will re-appear.
"A third measure is cycle improvement and equipment modification, especially for those lowercost, higher-reliable, simple steam air heater/economizer cycles (SAH).
In the United States, before the fuel crunch most shipyards offered and many owners desired only these less efficient plants. Overseas the price of fuel oil always has been higher than in this country; consequently, the economics favored the most efficient regenerative gas air heater cycle (RAH).
As long as normal operation is in the range of 70 to 100 percent of design, maximum continuous rating, the fuel savings from this program could average 5 percent for the SAH cycle and about 2 percent for the RAH cycle.
"Another conservation measure involves slow steaming," the author said. "On an individual ship basis, this measure has the greatest potential for fuel conservation, regardless of the type of propulsion steam cycle. However, owners must balance fuel savings against related cost increases, revenue losses, and the overall transportation requirements of their entire fleet. The net fuel savings from slow steaming, when operating between 55 and 30 percent of original maximum continuous rating, will vary inversely as the power between 25 and 40 percent, respectively."
Other stories from January 1984 issue
- Navy Contracts Totaling $477 Million Awarded To Avondale Shipyards page: 5
- Marinette Marine Awarded $1-Million Minesweeper Phase II Design Contract page: 5
- Brown & Root Inc. Forms Joint Venture In Holland With Two Dutch Companies page: 5
- Bethlehem Steel Signs Licensing Agreement For Tension Moored Platforms page: 5
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- New Bath Iron Works Repair Facility Opens In Portland page: 6
- Penske G M Power Head Discusses Service Support For Maritime Industry page: 6
- Modern Fuel Systems Symposium page: 10
- Jacobson Delivers Shipdocking Tug 'Chessie' To Chessie System page: 10
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- Carmen Guide Appointed President Of Lake Shore —Malsack Named Chairman page: 12
- Mobile Marine Introduces Advanced-Design Workboat page: 12
- Financing Completed For U.S. Lines Containerships Building At Daewoo Yard page: 13
- Navidyne Unveils New INMARSAT Ship Terminal —Literature Available page: 13
- Indikon Introduces New Web Deflection Indicator —Literature Available page: 14
- T C S Industrial Appointed Distributor for NABRICO —Literature Available page: 14
- Joint SNAME, IME And NYPE Meeting Discusses Use of Inexpensive Fuels page: 16
- OUTSTANDING OFFSHORE/SHALLOW-DRAFT VESSELS OF 1983 page: 18
- Michigan Wheel Awarded Navy Contract For Carrier And Oiler Propellers page: 18
- Seaworthy Engine Systems Shortens Corporate Name page: 18
- Joel Alper Appointed President Of COMSAT World Systems Division page: 18
- REDUCING FUEL COSTS First In a Series-Propulsion Equipment page: 20
- Esercizio Cantieri Launches Tug/Supply Vessel Of New Design page: 41
- NASSCO Begins Conversion Of First Maritime Pre-Positioning RO/RO page: 41
- New Marine Autopilots Introduced By Racal —Literature Available page: 42
- Steam Plant Optimization Topic At New York Port Engineers Meeting page: 42
- AWO SHIPYARDS AND THE JONES ACT page: 44
- BIW Chief Engineer Addresses Northern New England ASNE page: 45
- Lifeboat Quick-Drop System Unveiled By SeaTek And MCR page: 45
- Charles Garman Named Western Sales Manager For Stork-Werkspoor page: 48
- Omnithruster Establishes New Manufacturing Facility In Canada —Literature Available page: 49
- Scholarship For Panamanian Students At Kings Point Funded by Justin Bonanno page: 50
- O'Boyle Firm Appointed Exclusive U.S. Agent For Astilleros Espanoles page: 51
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- Stork-Werkspoor Engines Will Power Exxon Tugboats page: 56
- Barge-Mounted Nine-Story Hotel Proposed By NKK page: 56
- New Design Cranes Installed On Navy's Auxiliary Drydocks page: 56
- New Fuel Management System From Pandel —Literature Available page: 63