To speed the transition to zero carbon emissions, the U.S. must focus on designing or redeveloping entire communities that are zero energy, according to Charles Kutscher, a long-time energy efficiency researcher.
Tackling building energy use at the district level provides economies of scale in heating and cooling. Used on some U.S. college and other campuses, systems with a central plant that burns natural gas to heat water, which then is circulated to the various buildings, are more efficient than dedicated systems for each building.
To achieve zero carbon emissions, the latest strategy for district systems uses an ambient temperature loop that “simultaneously and efficiently both heats and cools different buildings,” Kutscher writes. “Heat pumps at individual buildings or other points along the ambient loop add or extract heat from the loop. They can also move heat between deep geothermal wells and the circulating water.”
National research labs and other project partners are developing an open source software development kit called URBANopt that models elements of zero energy districts. These can include building efficiency/demand flexibility strategies, rooftop photovoltaic arrays, and ambient loop district thermal systems. The software can be integrated into other computer models to aid in design of zero energy communities.
Related Stories
| Jun 5, 2012
Baltimore officials vow to block $1.8 billion urban renewal project
Baltimore officials want to block a $1.8 billion urban renewal project until more neighborhood residents and minority contractors are hired and displaced residents can benefit from the revitalization.
| Jun 5, 2012
OSHA launches campaign to warn of heat dangers in outdoor work
The Occupational Safety and Health Administration has begun a campaign to warn outdoor workers about the dangers of heat exposure.
| Jun 5, 2012
AGC’s Safety and Health Conference focuses on regulations, legislation
More than 150 industry professionals and other attendees will participate in the Associated General Contractors of America’s (AGC’s) safety and health conference July 11-13 in Washington, D.C.
| Jun 1, 2012
New BD+C University Course on Insulated Metal Panels available
By completing this course, you earn 1.0 HSW/SD AIA Learning Units.
| May 31, 2012
Proposed change in Michigan’s building code would hurt innovation, say critics
Legislation pending before the Michigan Senate would change the law that calls for building codes to be updated every three years to require an update only every six years.
| May 31, 2012
Natural gas industry opposes federal carbon-neutral construction rule
The natural gas industry and some allies are working to block a federal green building rule that was expected to be a national model for carbon-neutral construction.
| May 31, 2012
Lawsuits push the legal boundaries of green building definition
This article explores some legal issues stemming from lawsuits in which plaintiffs have charged developers with not delivering on a promised level of sustainability.
| May 31, 2012
ANSI approves Green Building Initiative’s design standard
The Green Building Initiative (GBI), a Portland, Ore. nonprofit organization, has had its new consensus-based standard for the design, construction, and operations of environmentally friendly buildings approved by the American National Standards Institute (ANSI).
| May 31, 2012
USGBC testing Minnesota buildings to see if they are living up to LEED standards
The Minnesota chapter of the U.S. Green Building Council (USGBC) has teamed up with EnergyPrint, a St. Paul, Minn. energy consulting firm, to study the energy and water use of more than 150 buildings in the state that have LEED certification.