Abstract
Asset performance evaluations serve as a benchmark that can be used to make asset manufacturer selection decisions, i.e., choosing the brand of manufacturer that provides the highest performance among all brand competitors. Understanding the environmental conditions to which assets are subjected provides facility managers another data point to understand asset performance. This research builds upon a previously published performance-based manufacturer selection metric by investigating the linkage between asset performance and exposure to local climate, using chiller and air handler data from 20 United States Air Force installations. The link between environmental factors such as Heating Degree Days (HDD); Cooling Degree Days (CDD); Solar Irradiance; and a variable that accounts for relative humidity, and asset performance is investigated using analysis of variance (ANOVA) testing and correlation coefficients. The results reveal that most assets, regardless of location, (1) possess a moderate to strong performance; and (2) cumulative climate exposure and asset manufacturer selection influence asset performance. This work highlights the need for facility managers to consider the influence of climate on technical performance and use it as a decision criterion in manufacturer selection.
Highlights
Facility managers overseeing the operation and sustainment of built infrastructure assets are tasked to make data-driven decisions throughout the life cycle of assets, often in resource-scarce environments
Manufacturer B has a moderate correlation between Cooling Degree Days (CDD) and asset performance and a strong relationship between Heating Degree Days (HDD), Solar Irradiance, and H-55
The same result is shown for air handlers (Table 3). This analysis of variance (ANOVA) test shows that the interaction element between climate zone and manufacturer impacts the asset performance metrics
Summary
Facility managers overseeing the operation and sustainment of built infrastructure assets are tasked to make data-driven decisions throughout the life cycle of assets, often in resource-scarce environments. These decisions begin with selecting an asset to purchase from a manufacturer for use in their facility. Throughout the asset’s life cycle, facility managers continue to make decisions up until disposal, at which time they need to replace the asset entirely. All of these decisions and associated costs can be evaluated using Total Cost of Ownership (TCO) models, which calculate all costs incurred by owners of any physical assets over the asset’s lifespan (Durán et al 2016)
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