From energy efficiency requirements for design and construction of new buildings and their systems to compliance criteria, the standard provides minimum requirements for energy-efficient design for most buildings. For more than 35 years, Standard Gain access to the most critical updates, the real-world application of those changes, and why they originated. Each change analysis features the affected code and Standard sections and identifies the change as added text, a modification of the existing language, or deleted text.
Detailed illustrations and examples accompany each change. Air-to-Air Energy Recovery Fundamentals. Basics of High-Performance Building Design. Complying with Standard Energy Modeling Best Practices and Applications. Exceeding Standard Introduction to Buildings Enclosure Commissioning. The PRM can be used to demonstrate compliance with the standard and to rate the energy efficiency of commercial and high-rise residential buildings with designs that exceed the requirements of Standard The procedures and processes described in this manual are designed to provide consistency and accuracy by filling in gaps and providing additional details needed by users of the PRM.
Unlike a component based prescriptive approach, a system efficiency approach accounts for the interactions between the different components of a system. However, unlike whole-building performance it does not allow tradeoffs between different building systems i. TSPR evaluates the resources required for an HVAC system to fulfill the function for which it is intended — meeting building sensible and latent loads. As demonstrated by simplified energy modeling, the TSPR of a proposed building design must be greater than the TSPR of a baseline building design to comply.
The baseline system configuration used to represent energy use can be customized to meet any desired level of performance. Minimum criteria for solar heat gain coefficient SHGC and U-factor were upgraded across all climate zones.
The air leakage section was revised to clarify compliance. In the vestibule section, the standard refined exceptions and added a new option for using air curtains. Lighting control information for parking garages were updated to account for the use of LED. Side-lighting guidance was updated to clarify that the setback distance is a horizontal measurement, and the exception was amended to include natural objects as an obstruction.
Pump definitions, requirements, and efficiency tables are included in the standard. The efficiency table for liquid-to-liquid heat exchangers was removed. Table 6. New information for vacuum insulating glazing was added to the list of options for section 6. Section 6.
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