Executive SummaryThis report presents a methodology for modeling air infiltration in EnergyPlus to account for envelope air barrier characteristics. Based on a review of various infiltration modeling options available in EnergyPlus and sensitivity analysis, the linear wind velocity coefficient based on DOE-2 infiltration model is recommended. The methodology described in this report can be used to calculate the EnergyPlus infiltration input for any given building level infiltration rate specified at known pressure difference. The sensitivity analysis shows that EnergyPlus calculates the wind speed based on zone altitude, and the linear wind velocity coefficient represents the variation in infiltration heat loss consistent with building location and weather data. EnergyPlus infiltration input is calculated to be 0.2016 cfm/sf of exterior wall area, assuming that uncontrolled air leakage through the building envelope can be specified by a baseline leakage rate of 1.8 cfm/sf (@ 0.30 in. w.c) of exterior above grade envelope area (based on ASHRAE SSPC-90.1 Envelope Subcommittee recommendation).

to develop construction weights for various commercial building categories for the purpose of estimating weighted national energy savings from the development of ANSI/ASHRAE/IESNA Standard 90.1-2010 compared to ANSI/ASHRAE/IESNA Standard 90.1-2007. Disaggregate construction volume data was acquired from the McGraw Hill Construction Database for the years 2003-2007 and analyzed to develop detailed construction weights by climate zones, subzones and by states. These weights are provided in this report and will be subsequently used in developing a weighted national energy savings estimate for the impact of the 2010 standard.

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

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. 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 towards 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 buildings The AEDG-WH was developed in seven months by an ASHRAE special project committee (SP-114) made up of representatives of each of the partner organizations. This TSD describes the charge given to the committee in developing the warehouse guide and outlines the schedule of the development effort. The project committee developed two prototype warehouses (non-refrigerated warehouse and self-storage warehouse) to represent the class of small warehouses and performed an energy simulation scoping study to determine the preliminary levels of efficiency necessary to meet the energy savings target. The simulation approach used by the project committee 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). 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, lighting and daylighting technologies, infiltration reduction, and heating, ventilation and air-conditioning (HVAC) and service water heating (SWH) technologies. The report also documents the modeling assumptions used in the simulations for both the baseline and advanced buildings.

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 towards net-zero energy buildings. The guides provide prescriptive recommendation packages that are capable of reaching the energy savings target for each climate zone in order to ease the burden of the design and construction of energy-efficient small commercial buildings The AEDG-SR was developed by an ASHRAE Special Project committee (SP-110) made up of representatives of each of the partner organizations in eight months. This TSD describes the charge given to the committee in developing the retail guide and outlines the schedule of the development effort. The project committee developed two prototype retail buildings (strip mall and standalone retail) to represent the class of small retail buildings and performed an energy simulation scoping study to determine the preliminary levels of efficiency necessary to meet the energy savings target. The simulation approach used by the project committee is documented in this TSD along with the characteristics of the prototype buildings (which were based on current chain retail stores). 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, lighting and day lighting technologies and HVAC and SWH technologies. The report also documents the modeling assumptions used in the simulations for both the baseline and advanced buildings.