Upcoming changes to the Washington State Energy Code are expected to include requirements for dedicated outdoor air systems.
The updates will alter how engineers and architects approach design, writes Max Wilson, a senior energy analyst for Glumac. “Designers are now required to decouple the heating and cooling system from ventilation systems,” Wilson says. “According to the new code language, HVAC systems should now include ‘supply-air temperature controls that automatically reset the supply-air temperature in response to representative building loads, or to outdoor air temperatures.’”
Heating and cooling equipment, because they have been historically linked, have become major sources of wasted energy by pushing fans unnecessarily hard to maintain optimum comfort levels. The new approach will greatly reduce overcooling or overheating interior spaces, Wilson says, and mitigate wasted fan energy.
Another code update requires design teams to choose a minimum of two prescribed of several energy-efficient design strategies. The focus on these “seems to be on reduction of both lighting loads and fossil fuels usage,” Wilson writes. “The code updates focus on enhanced lighting controls, a 25% reduction in lighting power, on-site renewable energy, and high-efficiency domestic hot water sources for 60% of the load (e.g. waste heat recovery or solar hot water systems).” The state’s next group of code change proposals is due in March 2017.
Related Stories
Codes and Standards | Feb 2, 2015
AGC working with EPA on website to help with environmental rule compliance
The goal is for the site to be improved to make it easier for construction contractors to learn how to comply with federal and state environmental guidelines.
| Feb 2, 2015
New York law requires informing firefighters of wood truss construction
New York enacted a law that could make firefighting a bit safer by mandating property owners inform government and first-responders when they build or rehabilitate a building using "truss-type" pre-engineered wood or timber.
| Jan 14, 2015
Ontario code changes boost accessibility for people with disabilities
The new amended Ontario building code includes several provisions that improve accessibility for those with disabilities.
| Jan 14, 2015
American Concrete Institute releases Spanish edition of structural concrete code
New York City last year adopted the National Institute of Standards and Technology (NIST) recommendation to require additional exit stairways in high-rise buildings.
| Jan 14, 2015
Terrorism Risk Insurance Act renewed
President Barack Obama signed the Terrorism Risk Insurance Act law on Jan. 12.
| Jan 9, 2015
Academy of Art in San Francisco under fire for code violations
The fast-growing Academy of Art is under intense scrutiny by the City of San Francisco for code violations.
| Jan 9, 2015
New law mandates storm shelters in Illinois schools
An Illinois law took effect on Jan. 1 that requires all new and remodeled schools to have storm shelters.
| Jan 9, 2015
New OSHA regulations on reporting workplace deaths, hospitalizations take effect
As of Jan. 1, all employers under the jurisdiction of OSHA are required to report all work-related fatalities within eight hours and all in-patient hospitalizations, amputations, and losses of an eye within 24 hours.
| Jan 9, 2015
Zoning policy makes Bethesda, Md., a model walkable suburb
In sharp contrast to most suburban communities in the Washington, D.C. area, Bethesda, Md., stands out as a fine exemplar of the new urbanism ethos.
| Jan 8, 2015
Gundersen Health System says it is nation’s first net-zero healthcare network
Gundersen Health System, a network of hospitals, medical clinics, and nursing homes in Wisconsin, announced that it is producing more energy than it consumes, making it the first net-zero energy health system in the U.S.