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Norm Grusnick

STANDBY GENERATOR APPLICATIONS – DATA CENTRES
November 28, 2011

Designing a standby power system for data centre applications requires the correct generator to meet load requirements and also one using the most reliable fuel source.

Diesel fuel has been the traditional choice for standby power because its high thermal efficiency typically leads to lower cost per kilowatt in most applications....

Elbow Losses
August 26, 2011

Besides improving the energy efficiency of HVAC systems, round ductwork cuts installed costs.

All Duct Systems Not Created Equally
May 25, 2011

Different types of duct systems each come with inherent factors and the designer must look to find the best solution for the design at hand. Let us look at a typical Variable Air Volume (VAV) supply air system as laid out in Figure 1 below. It requires 20,500 cfm at 3 inches w.g. Static Pressure, which includes 400 cfm or 2 percent estimated duct air leakage. The VAV boxes need a minimum of 1...