ASHRAE has released a new standard that defines the terms "zero Energy" and "zero carbon" to describe buildings.
ANSI/ASHRAE Standard 228-2023, Standard Method of Evaluating Zero Net Energy and Zero Net Carbon Building Performance, sets requirements for evaluating whether a building or group of buildings meets a definition of “zero net energy” or a definition of “zero net carbon” during operation. The standard draws from other ASHRAE standards to address energy and carbon flows across a site boundary, their measurement, and their balance.
“Achieving a zero energy building has been viewed by many as a difficult goal to meet, with unforeseeable roadblocks and differing guidance,” said Keith Emerson, P.E., Life Member ASHRAE, chair of the Standards Project Committee 228. Standard 228 provides a consistent method for determining whether new and existing sites have reached zero energy. We hope this standard will become a helpful resource for building professionals in strategic decarbonization planning.”
Features of Standard 228 include:
- Allowances for sites that lack the means to produce adequate renewable energy, while placing additional requirements on the use of external carbon and renewable energy in the calculation.
- Defined calculation of energy in terms of source—a multiplier on the energy crossing the site boundary including energy used or lost in extraction, generation, and transit to the site.
- The main energy calculation made in terms of annual average factors. Allowance is made for the calculation of individual hours where data is available.
Related Stories
| May 22, 2014
ASHRAE releases best practice guide for liquid cooling systems in data centers
The publication provides guidelines on interface requirements between chilled-water systems and technology cooling systems and on the requirements of liquid-cooled systems that attach to a datacom electronics rack.
| May 22, 2014
Colorado approves $4.2B data center said to be invulnerable to power outages
The Niobrara Data Center Energy Park project in Colorado will be the first data center to be fully self-contained with its own self-generated energy production facility.
| May 22, 2014
Energy Department analysis shows efficiency gains from ASHRAE 2013 energy standard
Preliminary DOE analysis shows that the ASHRAE/IES’s 2013 energy efficiency standard contains energy savings over the 2010 standard of 8.5% source energy and 7.6% site energy.
| May 22, 2014
Federal disaster policy should focus on mitigation, insurance group says
Federal disaster policy should shift its focus toward mitigation in order to reduce future disaster costs, the National Association of Mutual Insurance Companies says.
| May 22, 2014
Study quantifies cost premiums for net zero buildings
The 73-page report breaks down the incremental cost premiums for transforming three LEED Platinum-designed buildings into net-zero energy, net-zero water, and living Buildings.
| May 22, 2014
Senate kills bipartisan energy efficiency bill over Keystone pipeline amendment
The legislation focused on energy efficiency standards such as water heaters with smart meters and cheaper heating and cooling systems for office buildings.
| May 19, 2014
Construction skilled-worker shortage causing rise in claims
The improved economy has boosted construction starts, but a shortage of experienced trade workers has led to more on-the-job injuries and construction defects.
| May 15, 2014
AISC Prequalified Seismic Moment Connection standard update now available
The AISC standard Prequalified Moment Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (ANSI/AISC 358-10) has been updated with a second supplement, ANSI/AISC 358s2-14.
| May 15, 2014
ConsensusDocs releases new agreements for contractors who hire consultants
ConsensusDocs has released the new ConsensusDocs 746 Constructor & Geotechnical Consultant Agreement and the 747 Constructor & Consultant Agreement.
| May 8, 2014
Report: Top storm-resilient cities have high adaptive capacity
The most resilient cities in the world, including five in the U.S., have attributes that would enable them to recover better than others from devastating natural disasters.
