lights out

Houston residents face high temperatures after storm Beryl leaves millions without power

It will take days to recover from Hurricane Beryl. Photo by Brandon Bell/Getty Images

The return of searing heat in the Houston area has deepened the misery for people still without power after Hurricane Beryl left residents in search of places to cool off and fuel up as the extended outages strained one of the nation’s largest cities.

More than 1.7 million homes and businesses in Texas lacked electricity Wednesday morning, down from a peak of over 2.7 million on Monday, according to PowerOutage.us. State officials faced questions over whether the power utility that covers much of the area had sufficiently prepared.

Texas Lt. Gov. Dan Patrick said that a sports and event complex would be used to temporarily hold up to 250 hospital patients who are awaiting discharge but cannot be released to homes with no power.

Beryl, which made landfall in Texas early Monday as a Category 1 hurricane, has been blamed for at least seven U.S. deaths — one in Louisiana and six in Texas — and at least 11 in the Caribbean. It weakened as it moved deeper into the U.S. and early Wednesday was a post-tropical cyclone centered over northeastern Indiana.

A flood watch was in effect for parts of Illinois, Indiana, Michigan, New York, Vermont, New Hampshire and Maine. The storm spawned suspected tornadoes in parts of Indiana and Kentucky.

In the Houston area, Beryl compounded and repeated the misery of May, when storms killed eight people and left nearly 1 million without power.

High temperatures Tuesday climbed into the 90s (above 32.2 Celsius) with humidity that made it feel even hotter. Similar heat and humidity were expected Wednesday. The National Weather Service described the conditions as potentially dangerous, given the lack of power and air conditioning.

People coped as best they could. Kyuta Allen took her family to a Houston community center to cool down and use the internet.

“During the day you can have the doors open, but at night you’ve got to board up and lock up — lock yourself like into a sauna,” she said.

An executive for CenterPoint Energy, which covers much of the Houston area, defended the utility’s preparation and response.

“From my perspective, to have a storm pass at 3 p.m. in the afternoon, have those crews come in in the late evening, and have everything ready by 5 a.m. to go out and get out and start the workforce is rather impressive, because we’re talking about thousands of crews,” said Brad Tutunjian, vice president of regulatory policy.

Nim Kidd, head of the state’s division of emergency management, stressed that restoring power was the top priority.

Patrick, who is acting as governor while Gov. Greg Abbott is overseas, said nursing homes and assisted living centers were the highest priority. Sixteen hospitals ran on generator power Tuesday morning, according to the Federal Emergency Management Agency.

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A View From HETI

A team from UH has published two breakthrough studies that could help cut costs and boost efficiency in carbon capture. Photo courtesy UH.

A team of researchers at the University of Houston has made two breakthroughs in addressing climate change and potentially reducing the cost of capturing harmful emissions from power plants.

Led by Professor Mim Rahimi at UH’s Cullen College of Engineering, the team released two significant publications that made significant strides relating to carbon capture processes. The first, published in Nature Communications, introduced a membraneless electrochemical process that cuts energy requirements and costs for amine-based carbon dioxide capture during the acid gas sweetening process. Another, featured on the cover of ES&T Engineering, demonstrated a vanadium redox flow system capable of both capturing carbon and storing renewable energy.

“These publications reflect our group’s commitment to fundamental electrochemical innovation and real-world applicability,” Rahimi said in a news release. “From membraneless systems to scalable flow systems, we’re charting pathways to decarbonize hard-to-abate sectors and support the transition to a low-carbon economy.”

According to the researchers, the “A Membraneless Electrochemically Mediated Amine Regeneration for Carbon Capture” research paper marked the beginning of the team’s first focus. The research examined the replacement of costly ion-exchange membranes with gas diffusion electrodes. They found that the membranes were the most expensive part of the system, and they were also a major cause of performance issues and high maintenance costs.

The researchers achieved more than 90 percent CO2 removal (nearly 50 percent more than traditional approaches) by engineering the gas diffusion electrodes. According to PhD student and co-author of the paper Ahmad Hassan, the capture costs approximately $70 per metric ton of CO2, which is competitive with other innovative scrubbing techniques.

“By removing the membrane and the associated hardware, we’ve streamlined the EMAR workflow and dramatically cut energy use,” Hassan said in the news release. “This opens the door to retrofitting existing industrial exhaust systems with a compact, low-cost carbon capture module.”

The second breakthrough, published by PhD student Mohsen Afshari, displayed a reversible flow battery architecture that absorbs CO2 during charging and releases it upon discharge. The results suggested that the technology could potentially provide carbon removal and grid balancing when used with intermittent renewables, such as solar or wind power.

“Integrating carbon capture directly into a redox flow battery lets us tackle two challenges in one device,” Afshari said in the release. “Our front-cover feature highlights its potential to smooth out renewable generation while sequestering CO2.”

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