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HydroComp Releases Version 3 Of NavCad™ HydroComp Inc., of Durham, N.H. unveiled Version 3 of its NavCad™ ship propulsion software package, aimed at marine profes- sionals: shipyards, consultancies and propulsion equipment manu- facturers. Version 3 utilizes an in- tegrated graphical interface as the analysis environment. Recalcula- tion spreadsheet capabilities are expanded, and a new graphing sys- tem can print full-page formatted plots. Version 3 uses easily-read- able ASCII files for data storage, and incorporates features such as: equilibrium planing analysis, with effect of hull, appendage, flaps, thrust and wind; initial standard- ization of predictions to model scale via original model test methodol- ogy; improved correlation to test or trial data, including straight ex- trapolation; added resistance calcu- lations for shallows water channel resistance, and towed barges and fishing nets; and interactive param- eter range checking. For more information on HydroComp, Circle 124 on Reader Service Card Sulzer Redesign Increases Power Of RTA84C Engine New Sulzer Diesel has increased the maximum continuous power output of the RTA84C engine by six percent. The upgraded engine now gives 4,050 kW/cylinder at 102 rpm, so the output of the 12-cylinder RTA84C has been increased to 48,600 kW. Component improve- ments have been applied so the reli- ability and durability of the engine are maintained or surpassed. For more information on Sulzer Diesel engines, Circle 126 on Reader Service Card $1.2 Million Yamaha Order For Volvo Penta Volvo Penta Asia Pacific has re- ceived an initial order, valued at around $1.2 million, for AD31/DP sterndrives. Yamaha, reportedly Japan's big- gest producer of leisure boats, is to redesign the popular Tackle 25 sportsfisher around Volvo Penta AD31/DP Aquamatic diesel sterndrives — direct-injected tur- bocharged and aftercooled four-cyl- inder, 2.4 liter diesel engines with Duoprop drives. Public demand in Japan is now for functional 22- to 26-foot sports boats such as the Tackle 25, with good performance and speeds in excess of 30 knots. Price has become important, so diesel sterndrive sales are reportedly challenging the out- board market. Volvo Penta recently introduced a 150-hp (crankshaft power) ver- sion of the AD 31, bringing to boat builders and owners improved per- formance for boats ranging from 20 feet to about 30 feet. For more infor- mation on Volvo Penta's products, Circle 125 on Reader Service Card Reintjes And Berg To Combine Products In Gear/ Propeller Package Reintjes and Berg Propulsion AB have reached an agreement to enter international markets offering their products — gearboxes and propeller drives, respectively — as package systems. Both companies will re- main independent. Reintjes was founded in 1879 and has been producing gearboxes ex- clusively since 1929. The present gearbox program serves an engine output range of 250 to 10,000 kW. To date, they have supplied more than 70,000 marine gearboxes. Berg was originally founded as a shipyard in 1912, and since 1927 has been manufacturing cp propel- lers for power ranges covered by the Reintjes gearbox program. More than 6,000 systems have been sold to date. For more information on Reintjes, Circle 127 on Reader Service Card For more information on Berg Propulsion AB, Circle 128 on Reader Service Card How to Operate More Efficiently At Lower Cost With Tranter Plate-type Heat Exchangers HEAT RECOVERY FROM CONDENSATE CONDENSATE DESALINATION UNIT SEAWATER SUPERCHANGER UNIT COOLING ELECTRONIC GEAR SEAWATER SUPERCHANGER UNIT HEATING RECOVERED OIL STEAM HOT WATER STORAGE PLATECOIL HEATED TANK FOR BANK RECOVERED OIL SPILLS -FRESH WATER SUPB&HANGER HEATING SHIP'S UNIT WATER SERVICE COOLING MAIN ENGINE WATER RADAR L DEMINERALIZED WATER/ GLYCOL COOLANT CENTRAL FRESH WATER COOLER SEAWATER -SEAWATER DESALINATION UNIT SUPERCHANGER - - - IS^SIMTI IIMIT USE POINTS U FRESH WATER STORAGE TANK SEAWATER SUPERCHANGER / OR FRESH UNIT WATER COOLING MAIN ENGINE LUBE OIL DIESEL ENGINE SEAWATER OR FRESH WATER SUPERCHANGER UNIT Naval ships, fleet oilers, commercial containerships, tankers and dredges are successfully finding new ways to operate more efficiently at lower cost, by utilizing Tranter's unsurpassed plate-type heat exchanger technology. Schematics presented here illustrate typical ways they are doing it. Superchanger" plate and frame heat exchangers are used in a wide variety of shipboard applications—particularly for cooling main engine jacket water and cooling main engine lube oil with fresh water or sea- water; cooling the ship's central fresh water; cooling electronic equipment; or recovering heat from condensate. They are far more effi- cient than tubular systems, and provide heat transfer coefficients from two to five times greater than those achieved by shell and tube units. They also require 10% to 50% less deck space and weigh up to one-sixth less. Superchanger units can be equipped with titanium plates which offer the best resistance to corrosion and erosion when exposed to seawater. Intermixing or cross-contamination of hot and cold liquids is virtually impossible. Low fouling rates reduce cleaning require- ments for Superchanger units, that are designed for easy maintenance. They can be cleaned-in-place by backflushing, or quickly disassembled by hand, cleaned and put back in operation. Platecoil® prime surface heat exchangers offer optimum temperature control. A Platecoil bank-in-tank unit provides wide interspaces for effectively passing solids while efficiently heating seawater containing oil from spills. Platecoil bayonet heaters provide a large amount of efficient primary heating surface in a single unit for maintaining desired temper- atures in storage tanks. These heaters help promote convection currents for better heat transfer rates and tank temperature uniformity. Platecoil suction heaters provide immediate heating for pumping oil out of tanks. Tranter plate-type heat exchangers can be supplied in full compliance with codes and specifications as required by the ABS; the U.S. Coast Guard; shock testing per MIL-S- Circle 235 on Reader Service Card 901C; vibration testing per MIL-STD-167-1; and ASME U stamp per Sec. VIII Div. 1. With over 50 years of heat transfer problem solving experience, Tranter is uniquely poised to answer your tough questions and solve your precise needs. Call us at (817) 723-7125. Better still, ask your local A Tranter representative about < our Heat Transfer Symposiums. The heat transfer answer. trantei* PLATECOIL • SUPERCHANGER • FLEXOPLATE • KOLD-HOLD TRANTER, inc., Texas Division Old Burk Road • P.O. Box 2289 Wichita Falls TX 76307 • (817) 723-7125 TELEX: 73-4410 • FAX: (817) 723-5131 • MADEINU.SA ©1993 TRANTER, inc. 660101 December, 1993 15
