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
| Jan 8, 2014
United Association, NRDC seek major plumbing code changes
Proposed changes include mandating the insulation of hot water piping in new buildings.
| Jan 2, 2014
EPA move to assert oversight on small bodies of water among top regulatory battles for 2014
The EPA has started the process of declaring that it has the power to regulate streams, brooks, and small ponds.
| Jan 2, 2014
Paseo Verde in Philadelphia is nation’s first LEED Platinum neighborhood development
Paseo Verde, a mixed-use, mixed-income community hosted a ribbon cutting ceremony last month.
| Jan 2, 2014
Green infrastructure prominent in Akron, Ohio's sewer plans
City officials in Akron, Ohio want to prevent stormwater from entering its combined sewer system through the use of green infrastructure.
| Jan 2, 2014
OSHA to hold public meeting on proposed rule to improve tracking of workplace injuries
The Occupational Safety and Health Administration (OSHA) has scheduled a public meeting to allow interested parties to comment on the proposed rule to improve tracking of workplace injuries and illnesses.
| Jan 2, 2014
Measuring whole building energy use among big changes in LEED v4
A new prerequisite in LEED v4 calls for each project to measure whole building energy use, and then share that data with USGBC.
| Jan 1, 2014
San Francisco hosts Net Positive Energy + Water Conference
The Living Building Challenge’s Net Positive Energy + Water Conference will be held Feb. 4-5 in San Francisco.
| Dec 27, 2013
California’s new Title 24 energy code compliance date pushed back to July 1, 2014
Due to the stringency of the provisions in California’s new Title 24 energy codes, their implementation has been postponed until July 1, 2014 to allow jurisdictions and engineers to prepare for them.
| Dec 27, 2013
$1 billion 'city within a city' development approved by Coachella, Calif., city council
The mega development includes 7,800 homes, a retail center, office space, and nearly 350 acres of open space.
| Dec 26, 2013
OSHA may require companywide reporting of injuries and illnesses
The Occupational Safety and Health Administration is considering a change in policy that would require organizations to submit company-wide data on illnesses and injuries.