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
Resiliency | Feb 16, 2016
Obama establishes federal earthquake risk management standard
The standard requires federal agencies to use earthquake-resistant design provisions in current building codes.
Codes and Standards | Feb 12, 2016
ISO releases national assessment and state-by-state building codes evaluation
Report covers 87% of U.S. population.
Codes and Standards | Feb 12, 2016
Huge fraud case involving alleged engineering impostors uncovered in California
Hundreds of buildings may have to be demolished.
Codes and Standards | Feb 11, 2016
New York governor makes emergency design-build authorization
The declaration was issued in response to Winter Storm Jonas which dumped over 18 inches of snow in parts of the state.
Green | Jan 29, 2016
USGBC names top 10 states for LEED green building
Illinois leads the list for the third straight year.
Codes and Standards | Jan 25, 2016
Dept. of Energy releases decision guides for plug and process loads
Plug and process loads consume about 30% of the primary energy in U.S. commercial buildings today.
Codes and Standards | Jan 22, 2016
ConsensusDocs releases new multi-party IPD agreement and joining agreement
The documents serve as a comprehensive revision of previous IPD agreement
Codes and Standards | Jan 22, 2016
State Savings Calculator analyzes savings associated with energy codes
The calculator breaks down the cost-effectiveness of energy codes on a state-by-state basis.
Codes and Standards | Jan 22, 2016
Metal Roofing Seaming Guide published by Metal Construction Association
The free document is specifically tailored for metal roof installation.
Codes and Standards | Jan 22, 2016
Treasury Dept. will start crackdown on illicit money in luxury real estate
The move is expected to impact high-end condo development.