POWER PLANT ACOUSTICS Episode 10 pptx

... building with the engine (or in a nearby building); and pow- er plant noise is disturbing to residential neighbors living near the plant. Noise control is directed to- ward meeting and solving ... the isolated assembly. — 3-14 ARMY TM 5-805-9 AIR FORCE AFM 88-20 NAVY NAVFAC DM-3.14 POWER PLANT ACOUSTICS DEPARTMENTS OF THE ARMY, THE AIR FORCE, AND THE NAVY DECEMBER 1983 duct mufflers...

Ngày tải lên: 13/02/2014, 23:20

... C-1 Page 1-1 1-1 1-1 1-2 2-1 2-1 2-2 2-2 2-2 2-3 2-3 2-8 2–13 2-13 3-1 3-2 3-3 3-4 3-12 3-12 3-15 3-15 3-15 3-16 3-16 4-1 4-1 4-43 4-52 i UFC 3-450-02 15 May 2003 UNIFIED FACILITIES CRITERIA (UFC) POWER PLANT ACOUSTICS APPROVED FOR ... radiated sound power the total PWL minus the table 3–1 values. is then out the flow...

Ngày tải lên: 27/06/2014, 23:20

... target co-ordinates to the attack system if any of these boxes is touched by the pilot on the HDD touch display. thermal cycling Oscillating between low and high temperatures. thermal de-icing De-icing ... by stresses repeatedly imposed by thermal cycling. thermal gradient See temperature gradient. thermal gradiometer Airborne instrument for detecting thermals by thermocouples on wing-t...

Ngày tải lên: 12/08/2014, 08:21

... Mobilgear 1 629 Lock and -28 .8 to 37.7 Lubriplate 2 Weeks Stainless None Lubriplate Lubricating Dam No. 12, ( -20 to 100 ) 124 2 Gun steel 124 2 Brush Eng. IA Almasol 607 SAE 90, yearly Lock and -28 .8 to ... Keystone stains clothes permanently. EM 1 110 -2- 1 424 28 Feb 99 B-1 Appendix B Survey of Locks and Dams for Lubricants EM 1 110 -2- 1 424 28 Feb 99 B -10 Hydraulic...

Ngày tải lên: 12/08/2014, 16:20

... Foundation Symposium Proceedings, Vol. 2, pp. 281297 DOI 10. 1007/2789_2008_080 â Springer-Verlag Berlin Heidelberg Published Online: 30 April 2008 Organocatalysis by Hydrogen Bonding Networks A. Berkessel ( ) Department ... and pressure effects. Chem Eur J 10: 2179–2189 Kirby AJ, Komarov IV, Wo thers PD, Feeder N (1998) The most twisted amide: structure and reactions. Angew Chem 110: 83...

Ngày tải lên: 12/08/2014, 16:21

... at lower part of duct is open and free of any obstruction so that moisture (rain or condensation) can run off. Check inlet temperature sensor for signs of damage. Clean sensor and surrounding area ... manufacturer of the auxiliary power unit be consulted to determine the time intervals in which the auxiliary power unit should be exercised and the length of each exercise. ,...

Ngày tải lên: 12/08/2014, 16:21

... C -1 Page 1- 1 1- 1 1- 1 1- 2 2 -1 2 -1 2-2 2-2 2-2 2-3 2-3 2-8 2 13 2 -13 3 -1 3-2 3-3 3-4 3 -12 3 -12 3 -15 3 -15 3 -15 3 -16 3 -16 4 -1 4 -1 4-43 4-52 i ARMY TM 5-805-9 AIR FORCE AFM 88-20 NAVY NAVFAC DM-3 .14 POWER ... by \1\ /1/ ) Change No. Date Location This UFC supersedes TM 5-805-9, dated 30 December 19 83. The format o...

Ngày tải lên: 12/08/2014, 16:21

... 3–8 of this manual. 2- 5. Indoor sound distribution. Sound from an indoor sound source spreads around 2- 2 TM 5–805-9/AFM 88 20 1NAVFAC DM–3.14 CHAPTER 2 SOUND ANALYSIS PROCEDURE 2- 1. Contents of ... source. 2- 1 Octave-band PWLs can be obtained by subtracting rections are different for the different engine speed the table 2 2 values from the overall PWL given groups. by table 2 l...

Ngày tải lên: 12/08/2014, 16:21

... is (from eq. 7-18 in the N&V manual) (3- 2) where A is the area of the radiating wall, in ft. 2 Equation 3 3 combines equations 3 1 and 3- 2: (3- 3) This equation must be used carefully. For ... used in engine-driven power plants. Re- fer to chapter 7 of the N&V manual for noise data on these sources. 2- 13 Since the directivity is also related to wavelength 3- 3. Reactive...

Ngày tải lên: 12/08/2014, 16:21

... category 4 or 5 area. Pad details are given in paragraph d(1) below. (3) For engines above 1200 rpm and under 40 0 hp. A concrete inertia block is not required for this 3–13 engine speed and power ... speed and power. b. On-grade location. The chart in figure 3–2 shows the paragraphs below that give recom- mended vibration isolation treatments for various combinations of engine speed...

Ngày tải lên: 12/08/2014, 16:21

... the power plant. This would reduce indoor SPLs but would not change the outdoor SPLs. If possible, other large buildings on the base could be used to shield the housing area from the power plant. ... control the noise. a. Description of power plant. In this example, a 15-MW plant is supplied by the manufacturer in a packaged form as shown in figure 4– 29. Item 13 shows an indoor...

Ngày tải lên: 12/08/2014, 16:21

... dense woods between the power plant and the hospital. The woods are about 500 ft. deep, and the trees are about 40 ft. high. The top of the exhaust stack of the power plant is about 30 ft. above ... Finally, Item 2 is the algebraic sum of Items 3 and 4. Thus, Item 2 represents the total PWL of the power plant sound that would just produce an NC–20 in- door criterion at the hospita...

Ngày tải lên: 12/08/2014, 16:21

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Ngày tải lên: 13/08/2014, 05:21

... C 1 and C 2 are the concentrations of cesium in the water column and the sediment waters, V 1 and V 2 are the volumes of water column and sedi- ment, W c and W s are the input rates of cesium and ... 279 â 2002 by CRC Press LLC two- and three-dimensional graphs and animations to visualize the results for better understanding. For example, Plot3D routine and the ContourG...

Ngày tải lên: 13/08/2014, 05:22

... instructions to contributors. Journal Articles 231 more than 2,500 words in length, and in the interests of rapid publica- tion, many journals send letter manuscripts to only one referee. Notes Journal ... on a subject, nor is it always the last. In the course of work in science and engineering, research results may be repackaged and disseminated in oral and written forms: at...

Ngày tải lên: 13/08/2014, 05:22