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The Cost Of Noise II |
Robert Giammaruti, Hudson Products Corporation |
2011 |
| Abstract: This is a follow on to the Cost of Noise paper presented in 2008 (TP08-16). The 2008 paper was focused on how noise affected project cost as a function of reduced far-field noise, for a static heat exchanger design. However, there is a second component that an air-cooled heat exchanger designer must take into account when looking at noise; specifically, how to balance the cost of the air-cooler metallurgy and design pressure with site noise requirements. In this paper, we will look at the effect of reduced far-field noise as a function of air-cooler metallurgy and design pressure. The goal here will be to demonstrate how these additional parameters influence optimum air-cooler cost design. |
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Sound Measurement from Field Erected Cooling Towers |
Ken Hennon and David Wheeler, Clean Air Engineering |
2007 |
| Abstract: The CTI Test Code for Measurement of Sound from Water Cooling Towers, ATC-128 (2005), defines two types of sound emissions tests for large cooling towers. The objective of the first test method is to quantify the sound level or personnel exposure levels in the working environment of the cooling tower. The objective of the second test method is intended to measure the total sound power emitted by the cooling tower by near field measurements. These near field measurements can then be subsequently projected to calculate sound power at far field points. This paper addresses both types of tests and present data from a recent field test and explains the challenges associated with the successful execution of a field test program. |
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Application of low Noise Technology for Evaporative Cooling Equipment |
Trevor Hegg - Evapco, Inc.
Paul Nelissen - Howden Cooling Fans |
2005 |
| Abstract: Reduced sound levels are becoming an increasingly critical requirement in many evaporative cooling applications. This paper will focus on the technologies such as application of alternative fan designs, reduced rotational fan speed, and attenuation to reduce fan noise and attenuation and water silencing to reduce falling water noise will be presented. The magnitude of sound reduction for each technology will be illustrated. In addition, case histories will also be presented to illustrate the effect some of these technologies have in sound sensitive applications. |
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Cooling Tower Noise |
Gary R. Mirsky, Hamon Cooling Towers |
1995 |
| Abstract: The construction of new facilities today, especially electric generation or cogeneration stations require permit approval that contain criteria such as noise limits. These facilities are being installed on ever decreasing smaller plots that causes equipment installation close to property lines. It is convenient frequently to place the cooling tower almost adjacent to the property line, thus imposing a sever noise criteria on the cooling tower. Noise sources in the cooling towers include fan, water, gear reducers, and motors. These noise sources are emitted through the air inlet, fan stack, and casing. Attention to techniques will be evaluated. |
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Reduction of Noise Generation by Cooling Fans (TP-93-03) |
Ir. Henk F. van der Spek, Ventilatoren Sirocco Howden B.V |
1993 |
| Abstract: Based on an intensive research program, it has turned out that it is possible to reduce the sound power level of cooling fans with 3 to 8 dBA by the extreme application of more or less known effective principles like wider blade cord and swept leading edge line. Following international recognized measuring standards; the measuring results will be presented as well as consequences for cooling tower design and cooling fan construction. |
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The New CTI Sound Code - Interpretation and Application (TP-245A) |
Tom Rose, Joiner-Pelton-Rose, Inc. |
1982 |
| Abstract: A new CTI Code, ATC-128, standardizing the measurement of sound from water-cooling towers was recently adopted. The highlights of this code will be reviewed. The implications of the code will be examined regarding current instrumentation that will and will not be acceptable along with techniques required but not explicitly stated in the Standard. |
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The Sound of Low-Speed Fans (TP-160A) |
Bruce E. Murray & Eric W. Wood, Bolt Beranek and Newman, Inc. |
1977 |
| Abstract: |
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Induce Draft Cooling Tower Noise and Its Control (TP-161A) |
John S. Wang, Exxon Research and Engineering Company |
1977 |
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Noise Prediction Techniques for Siting Large Natural Draft and Mechanical Draft Cooling Towers (TP-159A) |
Gregory A. Capano & Wayne E. E. Bradley, Stone & Webster Engineering |
1976 |
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What is Noise (TP-99A) |
Don O'Dell, Chief Engineer Chittom Equipment Company |
1972 |
| Abstract: |
