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
Engineers | Dec 22, 2023
ACEC report identifies opportunities for improving diversity for engineering firms
The ACEC Research Institute recently released a Diversity Roadmap presenting the state of diversity, equity, inclusion, and belonging (DEI&B) in the engineering industry.
Contractors | Dec 22, 2023
DBIA releases two free DEI resources for AEC firms
The Design-Build Institute of America (DBIA) has released two new resources offering guidance and provisions on diversity, equity, and inclusion (DEI) on design-build projects.
MFPRO+ News | Dec 22, 2023
Document offers guidance on heat pump deployment for multifamily housing
ICAST (International Center for Appropriate and Sustainable Technology) has released a resource guide to help multifamily owners and managers, policymakers, utilities, energy efficiency program implementers, and others advance the deployment of VHE heat pump HVAC and water heaters in multifamily housing.
Sustainability | Dec 22, 2023
WSP unveils scenario-planning online game
WSP has released a scenario-planning online game to help organizations achieve sustainable development goals while expanding awareness about climate change.
MFPRO+ News | Dec 18, 2023
Berkeley, Calif., raises building height limits in downtown area
Facing a severe housing shortage, the City of Berkeley, Calif., increased the height limits on residential buildings to 12 stories in the area close to the University of California campus.
Green | Dec 18, 2023
Class B commercial properties gain more from LEED certification than Class A buildings
Class B office properties that are LEED certified command a greater relative benefit than LEED-certified Class A buildings, according to analysis from CBRE. The Class B LEED rent advantage over non-LEED is about three times larger than the premium earned by Class A LEED buildings.
Codes and Standards | Dec 18, 2023
ASHRAE releases guide on grid interactivity in the decarbonization process
A guide focusing on the critical role of grid interactivity in building decarbonization was recently published by ASHRAE. The Grid-Interactive Buildings for Decarbonization: Design and Operation Resource Guide provides information on maximizing carbon reduction through buildings’ interaction with the electric power grid.
Architects | Dec 18, 2023
Perkins&Will’s new PRECEDE tool provides access to public health data to inform design decisions
Perkins&Will recently launched a free digital resource that allows architects and designers to access key public health data to inform design decisions. The “Public Repository to Engage Community and Enhance Design Equity,” or PRECEDE, centralizes demographic, environmental, and health data from across the U.S. into a geospatial database.
Codes and Standards | Dec 11, 2023
Washington state tries new approach to phase out fossil fuels in new construction
After pausing a heat pump mandate earlier this year after a federal court overturned Berkeley, Calif.’s ban on gas appliances in new buildings, Washington state enacted a new code provision that seems poised to achieve the same goal.
MFPRO+ News | Dec 11, 2023
U.S. poorly prepared to house growing number of older adults
The U.S. is ill-prepared to provide adequate housing for the growing ranks of older people, according to a report from Harvard University’s Joint Center for Housing Studies. Over the next decade, the U.S. population older than 75 will increase by 45%, growing from 17 million to nearly 25 million, with many expected to struggle financially.