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
Smart Buildings | Aug 21, 2015
Federal Alliance for Safe Homes offers plan to strengthen codes for disaster resilience
Some states losing ground on resilience, group says
Codes and Standards | Aug 21, 2015
After disease outbreak, ASHRAE legionella standard adopted in New York
City Council acts after 12 die of legionellosis
Codes and Standards | Aug 13, 2015
Research indicates major earthquake looming for Pacific Northwest
Most structures built before seismic codes instituted; extreme damage predicted
Codes and Standards | Aug 13, 2015
New York City may allow affordable housing developers to ‘double dip’ in subsidies
New York City may allow affordable housing developers to ‘double dip’ in subsidies
Codes and Standards | Aug 13, 2015
L.A. considers controversial traffic calming measures
Goal is to encourage alternative transportation
Codes and Standards | Aug 13, 2015
Proposed facility smart grid standard open for public review
Goal is common way to describe, manage, communicate about electrical energy consumptions, forecasts
Codes and Standards | Aug 6, 2015
AAMA updates methods for testing of exterior walls
The standard specifies test methods, specifications, and field checks to evaluate structural adequacy of exterior wall systems composed of curtain walls, storefronts, and sloped glazing.
Codes and Standards | Aug 6, 2015
Difference in male-female thermal comfort is due to clothing, ASHRAE says
Women wear lighter clothing in the summer, so they tend to be cooler in air-conditioned rooms, according to the group.
Codes and Standards | Aug 6, 2015
ConsensusDocs releases new CM agency contract standard agreement
For use when owner acts as the construction manager, hires a construction manager, or uses multiple prime contractors
Codes and Standards | Jul 31, 2015
AIA, International Code Council reach collaborative agreement on building codes
The deal covers a wide range of initiatives, including code development, compliance, and sustainability.