Marine Machinery 7 E Part 10 ppt

Ngày tải lên: 02/07/2014, 13:20

... T max can result in bearing failure, particularly in large bearings with white metal lining. Therefore, in these cases, it is necessary to limit T max during the design stage. With a properly designed ... Elastohydrodynamic lubrication in the rolling bearing requires a certain minimum speed below which FIG. 18-12 Thermohydrodynamic solution showing the isotherm contours plot in...

Ngày tải lên: 21/07/2014, 17:20

... 6.00 1.00 13.00 2. 70 BAL 5 .2 Ti 62 FeMn-1 D 0.44 0. 52 14 .10 16.60 BAL 20 FeMn -2 D 0.64 0 .26 0.47 13.60 BAL 20 Co-1 + 1 .20 2. 06 30.00 4.50 BAL 2. 00 3.00 3.00 1.5 Mo 40 Co -2 + 1.80 29 .0 9.00 BAL 50 Co-3 ... D 0.18 0.30 2. 90 1. 02 BAL 35 Fe -2 D 0.68 0.47 6.80 1.48 BAL 20 FeCr-1 D 2. 20 0.90 30.00 1.30 BAL 3.8 Mo 1.50 Ti 50 FeCr -2 D 0.44 1 .20 29 .60 1.70...

Ngày tải lên: 05/08/2014, 12:20

... 1. 6096 2 .10 95 2.86 01 1 ⁄ 64 1. 719 1 2. 219 1 2.9692 0.072 1. 6076 2 .10 75 2.85 81 0. 016 1. 718 4 2. 218 3 2.9685 0.073 1. 6057 2 .10 55 2.85 61 0. 017 1. 716 4 2. 216 3 2.9665 0.074 1. 6037 2 .10 35 2.8542 0. 018 1. 714 4 ... 1. 5543 2.05 41 2.8050 0.044 1. 6630 2 .16 29 2. 913 3 0 .10 0 1. 5523 2.05 21 2.8030 0.045 1. 6 610 2 .16 09 2. 911 3 0 .10 1 1. 5503 2....

Ngày tải lên: 05/08/2014, 12:20

... efficiency of this motor at full load is ( )( ) ⎜ OUT P 100 % = ⋅ 2100 = 0 hp 746 W/hp 100 % ⋅ 97.6% = IN P 16.05 MW (f) The output torque in SI ... supplied to the motor is 10 MW / 16.05 MW = 0.623. The maximum E A is 5067 V or 1.33 pu, so with E A set to maximum and the motor consuming 10 MW, the to...

Ngày tải lên: 06/08/2014, 11:20

... his employees who are likely to receive an effective dose in excess of 6 mSv per year or an equivalent dose which exceeds three-tenths of any relevant dose limit’. Only employees aged 18 years or over ... Ventilation may be required to prevent overheating of the equipment being enclosed. Where ventilation is required each vent should be silenced. Special consideration should be given to the...

Ngày tải lên: 11/08/2014, 21:21

... to its other side. Thus, every part is handled and sooner or later achieves the desired orientation. Often the difference between the geometrical center and the center of mass ... illustrated by examples presented in Figures 7.48 and 7.49. Here we use both the differences between the mass and geometrical centers of the details and their specific shapes...

Ngày tải lên: 11/08/2014, 21:22

... Avenue, Woburn, MA 018 01- 20 41 First published 19 52 Reprinted 1 976 ,1 979 Second edition 19 55 Sixth edition 19 83 Third edition 19 63 Reprinted 19 87 Fourth edition 19 68 Seventh edition 19 95 Reprinted ... from the main condenser (Figure 1. 13) by an air ejector, cooled by the main condensate and released in the ejector condenser. The condensed ejector...

Ngày tải lên: 12/08/2014, 02:22

... lines. Detergent oils are, therefore, widely used in this type of engine, The detergent additives used today are, in most cases, completely soluble in the oil. There is a tendency ... robust reciprocating or gear pump. The system must be protected by a relief arrangement. Pre-treatment and post-treatment Sea-water feed for reverse osmosis plant, is pretreated...

Ngày tải lên: 12/08/2014, 02:22

... skin. The effects and remedies are so diverse that reference books are needed on chemical carriers, to summarize the dangers and to give the correct response. Bulk liquid chemicals ... have been used. Because of the corrosive nature of the gas the fan materials must be carefully selected. Fan impellers of stainless steel or nickel-aluminium bronze are frequen...

Ngày tải lên: 12/08/2014, 02:22

... checked by measuring the diameter of the outer sleeve before and after tightening. The diameter increase should agree with the figure stamped on the sleeve. To disconnect the coupling, ... sandwiched between the propeller hub and the liner end. It is essential that the rubber has freedom to flow when nipped between the hub and liner. Excessive weardown of be...

Ngày tải lên: 12/08/2014, 02:22

... (Figure 8. 30) is necessary between the medium-speed diesel and the reduction gear. The coupling is necessary because the periodic application and reduction of torque as engine ... Figure 8. 27 Hub with cast iron sleeve 282 The propeller shaft Figure 8. 29 Reverse/reduction gearbox arrangement The drive from the engine input shaft to the counter shaf...

Ngày tải lên: 12/08/2014, 02:22

... temperature is the temperature registered by a thermometer with wetted fabric around the bulb. (When moisture evaporates from a surface, i .e. the skin, the latent heat required, ... thermometers suspended from screwed plugs in vertical steel tubes with perforations hung in the cold chamber have been replaced by remote reading devices. Electrical resistance and ele...

Ngày tải lên: 12/08/2014, 02:22

... portable fire extinguisher. A fire which develops undetected in an unmanned machinery space (or one where the watchkeeper is Deck machinery and cargo equipment 4 07 conventional derrick ... (Figure 14.10) of different thickness. These are set up parallel to each other and arranged to deflect in the same direction. Rapid temperature rise will cause the...

Ngày tải lên: 12/08/2014, 02:22

... 93—105 Turbo-feed pump, Weir type, 32 -7 Water-boxes, 1 Two-ram electro-hydraulic steering gear, Watertight doors 468 -71 288-90, 299-301 Weir electrofeeder, 38 Two stage air ejector, 22—4 Weir ... loads, evaluation of, fire risk, 53-55 372 -7 fuel heater, 66-8 Heat leakage, 365-6 heating, 66-8 Hele-Shaw pump, 290—2 homogenizer, 68 70 Hermetic compressors, 349...

Ngày tải lên: 12/08/2014, 02:22