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26 7. Site Visits The study included walk-throughs of the participating ATB facilities. This section describes the ideas behind the site visits and their contribution to this study. 7.1. Purpose The walk-throughs were originally aimed at: (1) completing and verifying information collected on the ATB systems and zones that are required for the EU/EUI Table benchmarking analysis, (2) characterizing the building space utilization, building loads and occupancy, (3) developing baselines for indoor air quality, and (4) collecting configuration, nameplate and operational data on the installed lighting and mechanical equipment. In reality, the site visits resulted in collecting missing information required for the EU/EUI Table benchmarking analysis and completing all fields of the Input Form, as well as confirming and further adjusting the Input Form to be more user friendly (please see the final Input Form in Section 5). Moreover, additional observations on each participating ATB were made while conducting the site visits, and general recommendations were developed on how to achieve greater energy efficiency, and better manage the energy consumption at an ATB. 7.2. Technical Resources The whole-system engineering approach, which was followed at the ATBs walk-throughs, is based on the following technical resources: Liu et al. 2002. The elements of Continuous Commissioning® assessment, under the Continuous Commissioning® (CC®) process, developed and trademarked by the ESL. The CC® process in its entirety focuses on the optimization of public, commercial, and institutional building operations, and has been implemented and achieved significant utility cost savings in hundreds of buildings around the world in various climates. 6.2.2. ASHRAE 2002. ASHRAE Guideline 14. This guideline provides methods for reliably measuring the energy and demand savings due to building energy management projects. 6.2.3. Lau et al. 2010. ACRP Synthesis of Airport Practice 21: Airport Energy Efficiency and Cost Reduction. The report documents low cost / short payback energy efficiency improvements implemented at 20 airports across the U.S. by means of a survey, interviews, and a literature review. The report identifies diverse strategies and relative costs to achieve energy efficiency at airports. 7.3. Visited ATBs The original work plan included visiting seven of the ten participating ATBs. However, during the initial site visits the team found that the site visits were helpful in completing the required information for the EU/EUI analysis, particularly on the ATB mechanical systems, GSE and alternative systems (ground power and PCA). Therefore, the team expanded the plan to all participating ATBs, and at the end were able to visit nine of the ten ATBs. Seven of the site visits took a one- to two-full-day session, in which our research engineers met with the ATBs various systems operators or contractors, toured the facilities, verified equipment, and made additional observations.
27 Table 6. Site Visits Schedule of Participating ATBs No. Airport Size Climate Zone W ar m er 1 L 2 2 M 2 3 Nonhub 2 M od er at e 4 L 3 5 L 3 6 L 4 7 M 4 8 S 5 C ol de r 9 L 6 10 S 6
