News / Science & Technology

Industrial Waste Heat Converted to Electricity

Oil is pumped from a well near Van, Texas, in this file photo. Gulf Coast Green Energy hopes to capture some of the heat from the thousands of oil and gas wells in Texas and turn it into electricity.
Oil is pumped from a well near Van, Texas, in this file photo. Gulf Coast Green Energy hopes to capture some of the heat from the thousands of oil and gas wells in Texas and turn it into electricity.
Bill Zeeble
DALLAS, Texas — Sixty percent of all energy generated in the world today is lost as wasted heat, according to Loy Sneary. The CEO of Gulf Coast Green Energy wants to capture some of that heat from the thousands of oil and gas wells in Texas – as well as other places – and turn it into electricity.
   
“We’ve got more electricity than could be generated by all the coal-fired power plants, natural gas-fired power plants and nuclear power plants in the world," he says. "That’s what the potential is.”

Deep underground, Sneary explains, the earth is already hot. Drive a diamond drill down into hard rock or shale, and the bit gets even hotter. Liquid cools it. That’s where Sneary’s Green Machine comes in.

Housed in a square box smaller than a compact car, the device channels the abundant hot well water through a pipe which runs next to another filled with refrigerant. The refrigerant boils and vaporizes at low temperatures and the resulting steam is used to generate electricity.

Engineers check the Green Machine, which converts waste heat into electricity, at Southern Methodist University in Dallas. (Courtesy SMU)Engineers check the Green Machine, which converts waste heat into electricity, at Southern Methodist University in Dallas. (Courtesy SMU)
x
Engineers check the Green Machine, which converts waste heat into electricity, at Southern Methodist University in Dallas. (Courtesy SMU)
Engineers check the Green Machine, which converts waste heat into electricity, at Southern Methodist University in Dallas. (Courtesy SMU)
“So we can take these lower temperatures, hot water sources, and transfer the heat," Sneary says, "and then once that refrigerant is expanded and pressurized, from there on it’s just like a steam turbine.”

It’s not just oil and gas wells that provide waste heat for the Green Energy Machines to convert into electricity, the heat recycling technology can also work with solar energy arrays, coal-fired power plants, internal combustion engines and virtually any other industrial process that produces waste heat.

Last year, Sneary connected his device to the boilers at Southern Methodist University in Dallas and converted that system’s waste heat into electricity, helping to cut the university’s utility bills.
 
Sneary says the Green Energy machine can generate enough electricity to power up to 70 homes at a fraction of the cost of power generated by a coal-fired plant.

SMU’s Geothermal Lab Coordinator, Maria Richards, says her lab’s custom temperature maps help Sneary find hot spots associated with petroleum drilling operations where he can deploy his machines. The school and Gulf Coast Green Energy have partnered for several years.

"There was really so much heat in the Gulf Coast," Richards says. "That made us realize that, by working with the oil and  gas wells, it was an ability to tap into those resources.”

Sneary is negotiating with drillers in Texas, has a project in West Virginia, and is looking at other states too. He says his company’s heat-capture technology is efficient and green because it’s emission-free. And given the growing number of oil-and-gas-well hot spots pinpointed on SMU’s geothermal map, Sneary expects his Gulf-Coast Green Energy machines will be in great demand for years to come.

You May Like

China’s Influence Grows With New Infrastructure Bank

Multibillion-dollar China-backed and BRICS-supported Asian Infrastructure Investment Bank seen as possible challenger to such lenders as IMF, World Bank More

Video Rabbi Hits Road to Heal Jewish-Muslim Relations in France

Rabbi Michel Serfaty makes the rounds in his friendship bus to encourage dialogue and break down barriers between the two groups More

Post-deal Iran Leaders Need 'Economic Momentum' to Solidify

Economists say deal could inject more than $100 billion into coffers - not enough to entirely rescue ailing economy - but maybe adequate to create 'economic momentum' More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
US Gay Marriage Ruling Yields Real-life Impacti
X
Michael Bowman
June 28, 2015 10:05 PM
Friday’s landmark Supreme Court decision legalizing same-sex marriage throughout the United States is an outcome few thought possible just years ago, and shows a nation that increasingly tolerates and even celebrates the hopes and aspirations of gay people. VOA’s Michael Bowman spoke to a same-sex couple that will benefit from the high court ruling, and to a Christian scholar who is apprehensive about its potential consequences for America’s faith community.
Video

Video US Gay Marriage Ruling Yields Real-life Impact

Friday’s landmark Supreme Court decision legalizing same-sex marriage throughout the United States is an outcome few thought possible just years ago, and shows a nation that increasingly tolerates and even celebrates the hopes and aspirations of gay people. VOA’s Michael Bowman spoke to a same-sex couple that will benefit from the high court ruling, and to a Christian scholar who is apprehensive about its potential consequences for America’s faith community.
Video

Video Syrians Flee IS Advance in Hasaka

The Syrian government said Monday it has taken back one of several districts in Hasaka overrun by Islamic State militants. But continued fighting elsewhere in the northern city has forced thousands of civilians from their homes. In this report narrated by Bill Rodgers, VOA Kurdish Service reporter Zana Omer describes the scene in Amouda, where some of the displaced are taking refuge.
Video

Video Rabbi Hits Road to Heal Jewish-Muslim Relations in France

France is on high alert after last week's terrorist attack near the city Lyon, just six months after deadly Paris shootings. The attack have added new tensions to relations between French Jews and Muslims. France’s Jewish and Muslim communities also share a common heritage, though, and as far as one French rabbi is concerned, they are destined to be friends. From the Paris suburb of La Courneuve, Lisa Bryant reports about Rabbi Michel Serfaty and his friendship bus.
Video

Video S. Korea Christians Protest Gay Rights Festival

The U.S. Supreme Court decision mandating marriage equality nationwide has energized gay rights supporters around the world. Gay rights remain a highly contentious issue in a key U.S. ally, South Korea, where police did a deft job Sunday of preventing potential clashes between Christian protesters and gay activists. Kurt Achin reports from Seoul.
Video

Video Saudi Leaks Expose ‘Checkbook Diplomacy’ In Battle With Iran

Saudi Arabia’s willingness to wield its oil money on the global diplomatic stage appears to have been laid bare, after the website WikiLeaks published tens of thousands of leaked cables from Riyadh’s Ministry of Foreign Affairs. VOA's Henry Ridgwell reports.
Video

Video Nubians in Kenya Face Land Challenges

East Africa's ethnic Nubians have a rich cultural history that dates back thousands of years, but in Kenya they are facing hardships, including the loss of lands they have lived on for generations. They say the government has reneged on its pledge to award them title deeds for the plots. VOA's Lenny Ruvaga reports.
Video

Video Syrian Refugees Return to Tal Abyad

Syrian refugees in Turkey confirm they left their hometown of Tal Abyad because of intense fighting and coalition airstrikes, not because Kurdish fighters were engaged in ethnic cleansing, as some Turkish officials charged. VOA Kurdish Service reporter Zana Omer, in Tal Abyad, finds that civilians coming back to the town agree, as we hear in this report narrated by Roger Wilkison.
Video

Video Military Experts Question New Russian Tank Capabilities

Russia has been showing off its new tank design – the Armata T-14. Designers claim it is 20 years ahead of current Western designs - and driving it feels like playing a computer game. But military analysts question those assertions, and warn the cost could be too heavy a burden for Russia’s struggling economy. Henry Ridgwell reports.
Video

Video In Kenya, Police Said to Shoot First, Ask Questions Later

An organization that documents torture and extrajudicial killings says Kenyan police were responsible for 1,252 shooting deaths in five cities, including Nairobi, between 2009 and 2014, representing 67 percent of all gun deaths in the areas reviewed. Gabe Joselow has more from Nairobi.
Video

Video In Syrian Crisis, Social Media Offer Small Comforts

Za’atari, a makeshift city in Jordan, may be the only Syrian refugee camp to tweet its activities, in an effort to keep donors motivated as the war in Syria intensifies and the humanitarian crisis deepens. Inside the camp, families say mobile phone applications help hold together families that are physically torn apart. VOA’s Heather Murdock reports.
Video

Video Chemical-Sniffing Technology Fights Australia's Graffiti Vandals

Cities and towns all over the world spend huge amounts of resources battling graffiti writers who deface buildings, public transport vehicles and even monuments. Authorities in Sydney, Australia, hope a new chemical-sniffing technology finally will stop vandals from scribbling on walls in the passenger areas of commuter trains. VOA’s George Putic has more.
Video

Video Cambodia Struggling to Curb Child Labor

Earlier this year a United Nations report found 10 percent of Cambodian children aged 7-14 are working – one of the highest rates in the region – and said one in four children in that age bracket are forced to quit school to help their families. Although the child labor rate has dropped over the past decade, Cambodia has a lot more to do – including keeping more children in school. Robert Carmichael reports for VOA from Phnom Penh.

VOA Blogs