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1 Airports provide an attractive opportunity to reduce energy consumption through energy optimization in escalator and moving walkway systems. The magnitude of potential savings is driven by specific operating requirements that are unique to airports, such as a large number of escalators and moving walkway systems, a large number of passengers passing through on a daily basis, long duty cycles, and increasing stakeholder pressures to adopt sustainable practices in public transport systems. Escalator and motor manufacturers offer multiple energy saving technologies for escalators and moving walkways; however, guidance on which technologies are best for each application is not readily available. The goal of this report and the accompanying financial tool is to provide a resource to help airport managers identify the right energy saving technology for a given airport and estimate the potential savings that would result from the installation of an energy saving technology. Scope and Purpose This report is meant to act as a resource to airport managers when selecting energy sav- ing technologies. Its purpose is to (1) provide an overview of the energy saving technologies available on the market today specific to escalators and moving walkways; (2) provide an estimation of the potential savings that would result from the installation of said technolo- gies; and (3) provide guidance on how to select and implement an energy saving technology. In addition to an overview of each technology, benefits and limitations of each technology are discussed. This project only considered technologies offered for escalators and moving walkways. Energy saving opportunities also exist for elevators and trains; however, an analysis of the technologies available for elevators and trains was outside the scope of this project. Additionally, an analysis of the safety considerations for each technology was not part of the scope of this project. Although examples of installations of each technology listed can be found within the United States, not all state safety codes allow the use of each technology. All airports are encouraged to perform a safety analysis before the installation of a new technology on their escalators or moving walkway systems. Finally, the scope of this project only encompasses technologies for installation on an escala- tor or walkway system. Maintenance operations, which may provide additional opportunities for savings, were not independently reviewed and researched as part of this study. C H A P T E R 1 Introduction
2 Airport Escalators and Moving WalkwaysâCost-Savings and Energy Reduction Technologies How to Use this Report This report contains the following four main sections: 1. Industry background, 2. Energy saving approaches, 3. Guidance on how to select and verify energy saving technologies, and 4. Guidance on how to use the financial evaluation tool. The Chapter 2, Background, provides an overview of the potential energy savings within the United States that could be achieved by reducing the energy use of escalators and moving walkways. This chapter also provides an overview of innovative technologies currently used in Europe and China. In addition, an overview of the standard that affects the applicability of the technologies included in this report is discussed. Readers are encouraged to review ANSI/ASME A17.1, âSafety Code for Elevators and Escalatorsâ prior to installing an energy saving technology on escalators or moving walkway systems within their airport to ensure the technology meets state requirements. Chapter 3, Energy Saving Technologies, is split into two parts. The first discusses technolo- gies included in the financial tool that accompanies this report. An overview of the technologies, benefits, and limitations of the technologies is included in this section. Readers are encouraged to review each technology in this section and perform an analysis on the potential savings for their site-specific parameters using the accompanying financial tool prior to selecting the best project for an airport. The second portion of Chapter 3 discusses technologies that may be recommended by outside sources as viable energy saving technologies, but are either not recommended due to the results of this study or not included in the financial evaluation tool due to the limited data available. Readers are encouraged to review this section as it may provide valuable information regarding technologies that may have been recommended to them in the past. Chapters 4 and 5 of the report provide guidance on how to select and implement an energy saving technology on a moving walkway or escalator system and how and when to use the finan- cial tool. These chapters act as guides for implementing energy saving projects on an escalator or moving walkway. In addition, the recommendations given in these sections may apply to other energy saving projects, aside from moving walkway and escalator-related installations. Finally, although maintenance best practices for escalators and moving walkways were not included within the scope of this project, a brief discussion based on the findings discovered while investigating the energy saving technologies is provided in Chapter 6, Best Practices.
