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RESEARCH PAPERS

J. Eng. Power. 1960;82(3):169-178. doi:10.1115/1.3672751.

To permit the use of high-vanadium residual oil as fuel for combined super-charged-boiler gas-turbine power plants, it is necessary to determine the treatment required to prevent the high-temperature corrosion and deposit problems associated with this fuel. A test program has been undertaken wherein a number of magnesium and aluminum-bearing additives have been injected into washed residual oil when firing a laboratory-scale, simulated supercharged boiler. Different tube arrangements within the boiler have been tried. Ash collected on the tubes at various locations has been analyzed and its corrosive effect at high temperatures on some types of stainless steel has been evaluated. The results thus far obtained are presented together with some hypotheses regarding the formation of deposits.

Commentary by Dr. Valentin Fuster
J. Eng. Power. 1960;82(3):181-190. doi:10.1115/1.3672755.

In the past few years, corrosion of high-temperature superheaters and reheaters has become an increasingly serious problem on coal-fired boilers. A type of corrosion that has occurred on several boilers in the Chicago area which burn high-alkali coal is described. The results obtained from an experimental study of the factors influencing the rate of attack and the control measures applied are described.

Commentary by Dr. Valentin Fuster
J. Eng. Power. 1960;82(3):194-201. doi:10.1115/1.3672760.
Abstract
Commentary by Dr. Valentin Fuster
J. Eng. Power. 1960;82(3):205-214. doi:10.1115/1.3672766.

General noise reduction considerations for shipboard installation of gas turbines are discussed. Specific information relating to sound-absorption materials, duct treatments, structureborne sound isolation, and airborne sound insulation is graphically presented.

Commentary by Dr. Valentin Fuster
J. Eng. Power. 1960;82(3):215-219. doi:10.1115/1.3672768.

Certain component failures in synchronous-driven high-inertia rotating equipment may be traced to a phenomenon peculiar to the starting characteristic of a salient-pole synchronous motor: A synchronous motor contributes a pulsating torque during the starting cycle. Though this fact is well known in itself, it has not been associated with the effect it may have on a high inertia load. The pulsating torque may excite a torsional resonance, which will in turn induce very high stresses in the driven train members.

Commentary by Dr. Valentin Fuster
J. Eng. Power. 1960;82(3):221-226. doi:10.1115/1.3672771.

In its simplest terms, the design of a rotary-vane compressor of a given displacement consists of selecting a particular combination of rotor and cylinder radius, cylinder length, and number of vanes. A study of the rotary-vane compressor has shown that the choice is not entirely arbitrary since thermodynamic and mechanical losses occurring in the compressor are intimately associated with these basic dimensions. One of the more important of these geometrically dependent losses was found to be potentially severe overcompression during the discharge process. In this paper, an equation is developed that describes in generalized form the relation of overcompression to the dimensions of the compressor. This equation is used to evolve an energy-loss criterion for design control of this loss. An example of the application of the criterion to a refrigeration compressor is included.

Commentary by Dr. Valentin Fuster
J. Eng. Power. 1960;82(3):227-238. doi:10.1115/1.3672774.

Some methods for reducing the tendencies toward cracking in steam-turbine shells are described. Involved are improved operating procedures, application of accessories, and improved mechanical design, all of which aid in properly controlling shell thermal distribution.

Commentary by Dr. Valentin Fuster

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