December 2008 Issue

A Nashville-based hunting club required the flooding of several acres of land. A shallow area approximately 1.5-ft deep needed to be flooded to help attract wild game.
As the need to increase efficiency and meet lower emissions requirements puts pressure on gas turbine operators, they look for innovative solutions that do not necessitate large capital costs or high risks to make improvements. Some of the more reliable enhancements are water injection for nitrogen oxides (NOx) reduction, online and offline water wash programs to maintain compressor efficiency and fogging for power augmentation.
Given time, every component of the rotating machinery will eventually fail, even when operating in a perfect environment.
Q. Our office building has a pump room in the basement, which causes sufficient noise to be bothersome to the people in the office above it. What can be done to reduce the noise?
Follow some little known rules to keep your pumps working at their best for longer.
There are two primary classifications of industrial compressors: intermittent flow (positive displacement), including reciprocating and rotary types; and continuous flow, including centrifugal and axial flow types.
This article focuses on how leaks can negatively impact the system as a whole, and how leaks can affect the environment and the well-being of the personnel who work around them.
In the past year, the rate of acceleration in the cost of raw materials (including steel, iron ore, copper and aluminum) has reached unprecedented levels in the pump and rotating equipment industries.
Last month we reviewed the pump selection criteria for a typical constant pressure-variable flow (Cp-Vf) application that utilized variable speed (VFD) control. This month we will explore an application where pressure varies in proportion to a change in flow.

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