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Shaping Tomorrow's Built Environment Today
December 19, 2024
Heating and lighting buildings requires a vast amount of energy: 18% of all global energy consumption, according to the International Energy Agency. Many buildings’ HVAC systems are outdated and slow to respond to weather changes, which can lead to severe energy waste. Some scientists and technologists are hoping that AI can solve that problem, despite its energy-intensive nature. However, experts argue that AI can also be part of the solution by making large buildings more energy-efficient. And early efforts to modernize HVAC systems with AI have shown encouraging results. Read more
A 2024 study estimated that AI could help buildings reduce their energy consumption and carbon emissions by at least 8%. Image Credit: Getty Images
The U.S. Treasury Department issued final rules earlier this month updating the Section 48 investment tax credit (ITC) and addressing issues raised in comments on the proposed rules regarding offshore wind, geothermal heat pumps, biogas, hydrogen storage and co-located energy storage. New clarifications included definitions for what constitutes qualified biogas property, that hydrogen energy storage property doesn’t need to store hydrogen that is solely used as energy, and that the owner of underground geothermal coils can claim a tax credit if they own at least one heat pump used in conjunction with the coils. Read more
The Biden administration plans to raise tariffs on solar wafers, polysilicon and some tungsten products from China to protect U.S. clean energy businesses. The notice from the U.S. Trade Representative’s office said tariffs on Chinese-made solar wafers and polysilicon will rise to 50% from 25% and duties on certain tungsten products will increase from zero to 25%, effective on Jan. 1, following a review of Chinese trade practices under Section 301 of the 1974 Trade Act. Read more
Join Kathleen Owen and Journal technical editor Rebecca Matyasovski as they discuss some ins and outs of particle filters, including particle capture and the economic impact of different filters. This article appears in the December 2024 issue of ASHRAE Journal.
 
 
Hot Air Podcast: How Particle Filters Work with Kathleen Owen
ASHRAE Journal
By Abdel K. Darwich, P.E., C.Eng., HFDP
This article discusses a simple, easy-to-use method that would not yield any under- or over-ventilation used in “mixed” systems serving spaces regulated by ASHRAE Standard 62.1, Ventilation and Acceptable Indoor Air Quality, and ASHRAE/ASHE Standard 170, Ventilation of Health Care Facilities. Download here
ASHRAE News
As wildfires and prescribed burns increasingly impact communities worldwide, ASHRAE has published a new resource aimed at safeguarding indoor air quality (IAQ) during these events. ASHRAE Guideline 44-2024, Protecting Building Occupants From Smoke During Wildfire and Prescribed Burn Events, outlines best practices for building design, operation and maintenance to reduce the health risks associated with prolonged exposure to wildfire and prescribed burn smoke. Read more
In Case You Missed It
In this feature by WIRED, journalist Lisa Wood Shapiro reports on an air quality cabin experiment she conducted in a Maine cabin this past summer. She tested air purifiers, food dehydrators and indoor air quality monitors, tracking outdoor air quality, monitoring the indoor air and watching the numbers climb in their predictable pattern when she used her stove. A couple weeks into the experiment, Shapiro noticed odd spikes in PM2.5 for seemingly no reason. Read more
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