This Fact Sheet provides an overview of the Better Buildings Workforce Guidelines project. The Department of Energy (DOE) and the National Institute of Building Sciences (NIBS) are working with industry stakeholders to develop voluntary national guidelines that will improve the quality and consistency of commercial building workforce training and certification programs for five key energy-related jobs.
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Re-tuning focuses on a number of commonly occurring operational problems in buildings. These guides, through examples, provide details on how to detect good (normal) and bad (abnormal) operations. The purpose of the central utility plant (CUP) heating control guide is to show, through
examples of good and bad operations, how CUP heating can be efficiently controlled. This guide will focus on hot water boilers and their operations
The Advanced Energy Design Guide for Grocery Stores (AEDG-Grocery) is intended to provide a simple approach for contractors, designers, and owners to achieve 50% savings in grocery stores and other like retail that has refrigeration systems. Application of the recommendations in the Guide should result in grocery stores with 50% energy savings when compared to those same stores designed to the minimum requirements of ANSI/ASHRAE/IESNA Standard 90.1-2004. Energy Standard for Buildings Except Low-Rise Residential Buildings.
This project focuses on testing and demonstrating both the hardware and Cloud versions of theSMDS under field conditions. The objectives for testing and demonstrating the hardware are to 1) characterize the performance of the SMDS technology, 2) estimate the savings-to-cost ratio for demonstration units, and 3) characterize the usability of the SMDS including ease of installation and use. The SMDS provides information to the user, but to realize savings, actions must be taken by the user. The hardware demonstrations seek to discover how effective information is in influencing actions, including which faults generate the most servicing actions by the user.
These field demonstrations are of prototype SMDS units, which have not yet completed the product development process. These early demonstration projects are critical to understanding SMDS performance in the field and to gaining a better understanding of the potential performance or user interface enhancements needed in the next generation SMDS units. Conclusions related to the larger commercial building market, such as the incidence of performance degradation and specific faults and the energy savings resulting from addressing them are beyond the scope of this study and not compatible with the current stage of SMDS development.
The demonstration was performed separately for the hardware and Cloud versions of the SMDS. Both demonstrations involved selecting buildings, installing the required hardware (although it requires less hardware, the Cloud version requires sensors and cell modems), collecting and processing data, and viewing and tabulating results. Details of the procedures are presented later in this report.
Comprehensive commissioning can greatly improve the quality and energy efficiency of commercial refrigeration systems. This guide provides direction to owners and managers of commercial and industrial facilities that use refrigeration systems to help ensure that project requirements are met and that owners' expectations are achieved. This includes retail grocery, food service, refrigerated warehousing, and industrial refrigeration systems. The guide was produced as an ASHRAE special publication with funding from DOE/NREL.
NorthBay VacaValley Hospital completed lighting retrofits to their 150,000 square foot parking lot and its 225 parking spaces. They did so with help from The California Lighting Technology Center (CLTC) at the University of California, Davis. The project has achieved 65% savings and received a 2014 Lighting Energy Efficiency in Parking (LEEP) Campaign’s award for best use of lighting controls. In addition, the retrofits improved lighting maintenance operations and end-user satisfaction.
The lighting retrofit included replacing roughly 50 induction luminaires with new LED fixtures with embedded lighting controls.
The new LED fixtures were coupled with various kinds of lighting control systems, including a radio frequency (RF) connectivity control system that was installed in dedicated zones with passive- infrared (PIR) and long-range microwave sensors to achieve energy savings. An “ultra-smart” lighting control network was also put in place, giving facility managers the ability to adjust lighting schedules, light levels and time-out settings, monitor the system’s energy use, and receive automated alerts when luminaires require maintenance.
On December 6, 2016, the U.S. Department of Energy announced the launch of a new partnership to jump-start zero energy schools across the country. The Zero Energy Schools Accelerator enables states and school districts alike to design, construct, and operate these cutting-edge, energy-saving schools. This press release highlights the importance of the Accelerator by featuring a completed zero energy school, Discovery Elementary in Arlington, Virginia.
Refrigeration systems account for a significant portion of commercial building energy use, especially in the food sales and service sector. Thousands of systems are installed annually in grocery stores and convenience stores, as well as food distribution and processing facilities. The key is to design and operate these systems to minimize energy consumption. DOE, NREL, ASHRAE, and industry experts recently completed the Refrigeration Commissioning Guide for Commercial and Industrial Systems to lead owners, design teams, and operators through the process of commissioning.
The purpose of the service hot water recovery calculator is to provide a tool for a refrigeration designer to use in estimating the potential energy savings of capturing heat from a refrigeration system for use in pre-heating a domestic hot water system. This tool assumes that only the superheated vapor portion of the refrigeration system's total heat of rejection will be captured with a heat recovery tank. Tank-type heat reclaim systems are one of the most common methods of heat recovery due to both their cost effectiveness and that large volumes of hot water are often consumed in supermarkets on a daily basis. This spreadsheet is intended for use by refrigeration or mechanical designers for rapid yet robust calculation of energy performance. This calculator assumes that the refrigeration input of the hot water recovery tank operates in series between the refrigeration compressor rack and condenser to capture superheat from compressors prior to condensing. This calculator also assumes that the domestic cold water supply is the only input to the hot water recovery tank and that hot water recirculation is not present or is returned to the service hot water system after the hot water recovery tank.
This spreadsheet is designed for use with the Refrigeration Playbook: Heat Reclaim report (www.nrel.gov/docs/fy15osti/63786.pdf). Please note that this calculator is not currently approved for use on Mac computers.
The purpose of the Refrigeration Playbook - Natural Refrigerants Spreadsheet is to provide the user a set of tools to analyze and compare refrigeration system designs, both synthetic and natural. The spreadsheet is intended to allow the user to manage a build of any refrigeration system type with the exception of transcritical Carbon Dioxide systems. Any systems built within this spreadsheet are also limited to a maximum of two suction groups on the primary system and two loops on the secondary system.
This spreadsheet is designed for use with the Refrigeration Playbook: Natural Refrigerants report (www.nrel.gov/docs/fy15osti/63821.pdf). Please note that this calculator is not currently approved for use on Mac computers.