International. ASHRAE published a new standard that outlines a methodology for applying building energy modeling throughout the design process.
ASHRAE Standard 209-2018, Energy Simulation Aided Design for Buildings except Low Rise Residential Buildings, defines the minimum requirements for providing energy design assistance through simulation and analysis of building energy.
The standard defines consistent energy modeling procedures to quantify the impact of design decisions when they are being made. To minimally comply with Standard 209-2018, construction project teams must evaluate energy efficiency options using modeling early in the design process (schematic design).
"For many buildings, energy modeling is typically employed only at the end of the design process to determine whether a building meets the minimum requirements for energy-efficient design, outlined in Standard 90.1," said Jason Glazer, chair of standard committee 209. "The 209-2018 standard requires building energy models earlier in the design process, so the information it provides will more effectively inform design decisions and result in higher-performing buildings."
This new standard will be useful for building owners, architects, government agencies and many others who want their projects to benefit from the use of simulation. By referencing the standard, they can identify appropriate modeling tasks and acquire modeling services that add value to the design process.
The standard also describes analysis activities from early concept development to subsequent occupation. The standard applies to new buildings, major renovations and additions, and defines the nominal requirements for the use of models to support integrated design efforts.
The 209-2018 standard defines seven design phase modeling cycles, each with specific modeling objectives coordinated with the typical design process. Each modeling cycle is an extension of a general modeling cycle that can be applied at any time during the design. Three additional modeling cycles are defined for the construction and operation phases, and include a design and aftermarket performance comparison to help owners and modelers understand the impact of design phase modeling assumptions and inform future modeling efforts.
The cost of the ASHRAE 209-2018 standard is $67 for ASHRAE members ($79, non-members). To place an order, visit www.ashrae.org/bookstore or contact the ASHRAE Customer Contact Center at 1-800-527-4723 (United States and Canada), 404-636-8400 (worldwide) or fax 678-539-2129.
To download the standard you can click here: Source: ASHRAE Colombia.
