Though ventilation may not seem that interesting a topic on the surface, this is precisely the area of the kitchen that has seen the most technological advancements in terms of energy efficiency and design.
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The Advanced Energy Retrofit Guide for Grocery Stores was created to help grocery store decision makers plan, design, and implement energy improvement projects in their facilities. It was designed with energy managers in mind, and presents practical guidance for kick-starting the process and maintaining momentum throughout the project life cycle.
The U.S. Army Corps of Engineers (USACE) worked in collaboration with the National Renewable Energy Laboratory (NREL), and the ASHRAE Military Technology Group (MTG) to develop baseline and target energy budgets and design guides with a prescriptive path for achieving energy savings of 30% or more over the baseline.
To maximize the benefits of converting traditional high-intensity discharge (HID) technology to high-efficiency alternative technologies, including LED, induction, and fluorescence, a CBEA Project Team developed parking structure lighting performance specifications that should be applied to specific sites rather than specific products.
Pacific Northwest National Laboratory (PNNL) with funding from the U.S. Department of Energy's Building Technologies Program (BTP) evaluated a number of control strategies that can be implemented in a controller, to improve the operational efficiency of the packaged air conditioning units. The two primary objectives of this research project are: 1) determine the magnitude of energy savings achievable by retrofitting existing packaged air conditioning units with advanced control strategies not ordinarily used for packaged units and 2) estimating what the installed cost of a replacement control with the desired features should be in various regions of the U.S. This document reports results of the study.
Commercial retailers understand that retrofitting constant-speed RTU fan motors with stepped- or variable-speed alternatives can save energy, but they have previously lacked supporting data for estimating energy savings in different climate zones. This study uses whole-building energy simulation to estimate the energy impact of this type of measure so retailers can determine economic feasibility for various locations.
The purpose of this report was to analyze the potential market value of a commercial building energy asset rating program for the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy. It Identifies core messaging to motivate owners, investors, financiers, and others in the real estate sector to adopt a voluntary asset rating program and, as a consequence, deploy high-performance strategies and technologies across new and existing buildings.
Miscellaneous electrical loads (MELs) are building loads that are not related to general lighting, heating, ventilation, cooling, and water heating, and typically do not provide comfort to the building occupants. MELs in commercial buildings account for almost 5% of U.S. primary energy consumption. On an individual building level, they account for approximately 25% of the total electrical load in a minimally code-compliant commercial building, and can exceed 50% in an ultra-high efficiency building such as the National Renewable Energy Laboratory's (NREL) Research Support Facility (RSF). Minimizing these loads is a primary challenge in the design and operation of an energy-efficient building. A complex array of technologies that measure and manage MELs has emerged in the marketplace. Some fall short of manufacturer performance claims, however. NREL has been actively engaged in developing an evaluation and selection process for MELs control, and is using this process to evaluate a range of technologies for active MELs management that will cap RSF plug loads. Using a control strategy to match plug load use to users' required job functions is a huge untapped potential for energy savings.
The Walmart Supercenter in Leavenworth, Kansas, offered a test case to determine whether an LED system could meet the CBEA specification and be competitive with conventional systems when maintenance and energy costs were factored in. The LED system was compared to two systems: a 1,000-watt (W) pulse-start metal halide (PMH) and a 400-W PMH. This case study provides initial results and results after two years.
This document provides a framework for standard measurement and verification (M&V) of lighting retrofit and replacement projects. It was developed to provide site owners, contractors, and other involved organizations with the essential elements of a robust M&V plan for lighting projects. It includes details on all aspects of effectively measuring light levels of existing and post-retrofit projects, conducting power measurement, and developing cost-effectiveness analysis. This framework M&V plan also enables consistent comparison among similar lighting projects, and may be used to develop M&V plans for non-lighting-technology retrofits and new installations.