11-03: The Cost Of Noise IIThis 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

of which 26 are existing and five are under construction

This paper examines these emerging issues

The department tested alternative biocides and is now using an effective low cost biocide

This paper discusses how the plant designed and implemented a trial to determine the costs and effects of improved microbial inhibition practices

recirculation rate

the fill is cut in small parts

The resultant phosphate is then measured by standard colorimetric methods

This may then be accepted by regulators in lieu of fan performance compliance verification

Legionella testing is required and chlorine residual control ranges are specified

Heat transfer coefficient measurements of this steady-state freezing process indicate improved performance over the traditional ice-on-coil process

allowed comparison of product features and application variables on an equal basis

and the cooling water was recycled through a sidestream softener was studied