This workshop will use interactive exercises and 3D SketchUp
models to illustrate field techniques that can be used to evaluate existing
building systems. The physical principles will be universally applicable across
the entire building commissioning spectrum.
The initial focus will be on assessing air side economizers during the design, construction, and ongoing commissioning phases of a building’s life cycle. It will leverage the Functional Testing Guide’s Economizer Evaluation Checklist by having the attendees us it to evaluate an economizer in one of the models. We will discuss results of the assessment and look at what the improvements would look like when implemented, including methods to assess their cost and benefit.
We will then shift to waterside opportunities by exploring a central chilled water plant in a 3D SketchUp model to scope it and identify potential EBCx opportunities.
We will then focus on pump optimization and the associated power and energy savings calculations, starting with a power calculation for a pump that is running more than it needs to. While the power associated with running a given pump will be the same for any location, the energy and dollar savings achieved by eliminating unnecessary run hours can vary significantly with the climate and utility rates. We will illustrate this by exploring the cost/benefit for the improvement if implemented in different locations.
The class will conclude by exploring pump optimization opportunities that exist in the plant, including contrasting an impeller trim with applying a variable speed drive and replacing a pump with a right sized pump. Time permitting, the class will also explore variable speed drive control optimization strategies and methods for assessing the potential savings to be achieved by the various options.