Technical Support Document: The Development of the Advanced Energy Design Guide for Highway Lodging Buildings

Abstract

Each of the guides in the AEDG series provides recommendations and user-friendly design assistance to designers, developers, and owners of small commercial buildings that will encourage steady progress toward net-zero energy buildings. The guides provide prescriptive recommendation packages that are capable of reaching the energy savings target for each climate zone to ease the burden of the design and construction of energy-efficient small commercial buildingsThe AEDG-HL was developed in 7 months by an ASHRAE special project committee comprised of representatives of each of the partner organizations. This TSD describes the charge given to the committee in developing the highway lodging guide and outlines the schedule of the development effort. The project committee developed two prototype highway lodgings to represent the class of highway lodging buildings. Pacific Northwest National Laboratory (PNNL) then performed an energy simulation analysis to determine the energy efficiency necessary to meet the energy savings target. The simulation approach used by the project committee and PNNL is documented in this TSD, along with the characteristics of the prototype buildings (which were based on data from F.W. Dodge and the Energy Information Administration (EIA 2006)). The prototype buildings were simulated in the same climate zones used by the prevailing energy codes and standards to evaluate energy savings.Prescriptive packages of recommendations presented in the Guide by climate zone include enhanced envelope technologies, interior and exterior lighting technologies, heating, ventilation, and airconditioning (HVAC) and service water heating (SWH) technologies, and miscellaneous appliance technologies. The report also documents the modeling assumptions used in the simulations for both the baseline and advanced prototypical buildings. The authors would like to thank all the members of the project committee for their tremendous volunteering efforts and significant inputs to our energy analysis work during the development of the Advanced Energy Design Guide for Highway Lodging Buildings. Without the committee members' expertise in producing the energy efficiency recommendations covering envelop, lighting, HAVC systems, and service water heating systems, this document would not have been successful.Last, but not least, the authors would like to specially recognize Andrew Nicholls, the program manager overseeing the Commercial Building Integration Program at PNNL, for providing the thorough review of this document and for his support of this particular project. Finally, the authors greatly appreciate the assistance of Todd Taylor at PNNL. Todd constructed the cluster simulation structure in EnergyPlus, which allowed us to evaluate the many variations of energy efficiency technologies in a timely fashion to meet the project compressed schedule. Wei

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“…Though the internal load may be treated as an aggregate, the energy consumption for each end use must be considered separately. A breakdown of annual energy consumption and associated internal loads for major appliances and other equipment is shown in Table 21 (Jiang et al 2008 andSachs 2005 for multi-family). We assumed for modeling purposes that all major appliances are present in both the Benchmark and the NCTH, even in cases where the builder does not provide all appliances (except the clothes washer in cases where the NCTH is a housing unit in a multi-family building with a common laundry room).…”

Technical Support Document: 50% Energy Savings for Small Office Buildings

“…Prototypical buildings were created, and then simulated in the eight climate zones covered in Standard 90.1-2004. The 30% AEDG series used 15 cities to represent the climate zones , Liu et al 2007, Pless et al 2007, Jiang et al 2008. This report uses 16 cities selected by DOE in establishing a new set of benchmark buildings.…”

“…In contrast, the exterior roof layer in the baseline models is a gray EPDM, with solar reflectance of 0.23 and thermal emittance of 0.87. Following the AEDG series , Liu et al 2007, Jiang et al 2008, cool roof is included only in climate zones 1 through 3.…”

Technical Support Document: 50% Energy Savings Design Technology Packages for Highway Lodging Buildings

“…Earlier guides used 15 cities to represent the climate zones Liu et al 2006;Liu et al 2007;Pless et al 2007;Jiang et al 2008). This study uses 16 cities selected by DOE in establishing a new set of benchmark buildings.…”

“…The process of how the characteristics of the highway lodging prototype were developed is also documented. (Jiang et al 2008) for detailed documentation of the prototypical building assumptions.…”