This report describes the psychrometric bin analysis that was conducted for the ASHRAE recommended and allowable operating environment zones as well as a modified allowable operating environment, discusses control strategies, and presents examples of energy-efficient data centers using alternative cooling strategies.
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NREL's sustainability vision is to build a laboratory of the future that is committed to sustainability, which is built on a framework of economic viability, environmental health, and public responsibility over the long term through appropriate investment decisions and operating practices.This report shows NREL’s progress in making sustainability an integral part of its corporate culture and providing a global sustainability model
This study analyzes the market needs for building performance evaluation tools. The purpose is to identify existing gaps and provide information for the U.S. Department of Energy (DOE) to use in developing a linked set of tools for optimizing energy performance of commercial buildings over their life cycles.
This report presents a set of 15 best practices for owners, designers, and construction teams to reach high-performance goals and maintain a competitive budget. These best practices are based on the recent experiences of the Research Support Facility owner and design-build team for the Research Support Facility (RSF) on the National Renewable Energy Laboratory’s (NREL) campus in Golden, Colorado, and show that achieving this high performance outcomes requires that all key integrated team members understand their opportunities to control capital costs.
The rooftop unit (RTU) Field Evaluation Checklist is intended to help identify damage, dysfunction, or degradation that requires more than routine maintenance. The checklist should be used to conduct a visual-based field evaluation to further refine the preliminary analysis.
The rooftop unit inventory spreadsheet can be used to gather basic RTU information, such as number, size, age, and general condition. The detailed fields in the spreadsheet can be used to gather additional information, such as controls, usage patterns, and features for additional analysis of the RTUs identified for retrofit, replacement, or further analysis.
The rooftop unit (RTU) decision tree can be used for preliminary screening for replacement of RTU units with more efficient units. This decision tree organizes RTUs into bins for “retrofit,” “replacement,” “no action,” or “needs further analysis.”
The BEDES Strategic Working Group Recommendations document is a guide to how the BEDES Dictionary can be brought to market and provide the services for which it was designed.
The U.S. Department of Energy created the Building Energy Data Exchange Specification (BEDES) to facilitate the exchange of information on building characteristics and energy use in an inexpensive and unambiguous manner.
The BEDES Dictionary 1.0 was developed by DOE to support the analysis of the performance of buildings by providing a common set of terms and definitions for building
characteristics, efficiency measures, and energy use.
NREL partnered with two hospitals (MGH and SUNY UMU) to collect data on the energy used for multiple thermal and electrical end-use categories, including preheat, heating, and reheat; humidification; service water heating; cooling; fans; pumps; lighting; and select plug and process loads. Additional data from medical office buildings were provided for an analysis focused on plug loads. Facility managers, energy managers, and engineers in the healthcare sector will be able to use these results to more effectively prioritize and refine the scope of investments in new metering and energy audits.
The Department of Energy’s (DOE) National Renewable Energy Laboratory’s (NREL) goal is to expand our leadership as a state-of the-art laboratory that supports innovative research, development, and commercialization of renewable energy and energy efficiency technologies that address the nation’s energy and environmental needs. Fundamental to this goal is NREL’s commitment to sustainability--operating in a manner that balances environmental, economic, and social values in the delivery of our mission. At NREL, sustainability is integral to both our research and operations. NREL is committed to demonstrating federal leadership in sustainability, working to continuously improve our performance and lead by example. This document provides an updated NREL site sustainability plan for 2014.