Taking the Earth’s temperature

January 20, 2015 by
Since installing 144 geothermal wells on campus over the past two years, Dr. Curt Elmore, professor of geological engineering, has led a couple of ongoing geothermal research projects.

Since installing 144 geothermal wells on campus over the past two years, Dr. Curt Elmore (center), professor of geological engineering, has led two ongoing geothermal research projects. Photo by Sam O’Keefe

On the surface, it looks like nothing more than a turf-covered soccer field. But the ground beneath Missouri University of Science and Technology’s intramural field houses a complex system of 144 wells, each one 400 feet deep, that supply the campus’s Gale Bullman Building with heating and cooling using geothermal energy.

That well field is also home to two ongoing geothermal research projects led by Dr. Curt Elmore, professor of geological engineering at Missouri S&T. The first project is designed to monitor possible long-term changes in the Earth’s temperature that could result from the operation of a large-scale geothermal system.

With funding from the geological engineering program and in partnership with the physical facilities department, Elmore and his team outfitted one of the wells in the center of Missouri S&T’s intramural field with eight pairs of thermocouples placed every 50 feet to measure temperature at various levels throughout the 400-foot well.

Wires connect the sensors to a small flush mount vault that looks like a water meter you might find in your yard. Nearly every day, Charlie Smith and Jordan Thompson – two students working with Elmore on the project – connect equipment to read the temperature measurements that the sensors recorded. An additional well, drilled 20 feet from the geothermal well field, provides baseline readings for comparison. Thompson, a junior in geological engineering, is working on the project as part of the Opportunities for Undergraduate Research Experiences program (OURE).

Before the geothermal system went live, the researchers collected about six weeks of background temperature data. Once the system was operational, they began to notice a change in the ground temperature.

“We observed that the average temperature did increase over the course of the summer as energy from the building was transferred to the subsurface,” says Smith, a Ph.D. candidate in geological engineering. “We are now observing the cooling of the subsurface as energy is being removed to assist in the heating of the building. We would like to record data during several full heating and cooling cycles to fully see any long-term overall warming or cooling trends.”

Over time, changes in ground temperature could effect the performance of a geothermal energy system, Elmore says.

“A ground source geothermal system works by taking heat from the air and sending it into the ground,” Elmore says. “Or we take heat from the ground and send it into the air. Here, cooling is predominant. If the ground is warmer, it can’t take on as much heat and that could effect the performance of the geothermal system,” he says. “Let’s say you want to chill a bottle of Coke, for example, and you’re used to putting it in cold water for 10 minutes. If your water gets warmer, it will take longer to cool your Coke. If it’s really cold, it will cool faster.”

An expert in groundwater remediation, Elmore is also working on a project to see if geothermal energy could be used in place of electricity to treat water as a part of an innovative desalination process.

“Geothermal energy has the potential to heat and cool water during the treatment process, thus reducing the amount of water wasted and reducing the amount of energy required to treat the water,” Elmore says.

To pilot the project, Elmore is designing a small desalination system that will fit on a utility trailer towed behind a pickup truck.

Elmore is working on the project with Dr. Mostafa Elsharquawy from King Fahd University of Petroleum and Minerals in Saudi Arabia. They hope to build a water treatment facility that uses geothermal energy.

“Saudi Arabia spends millions of dollars every year changing sea water into drinking water,” Elmore says. “Geothermal energy could provide a much more cost-effective treatment system.”

Missouri S&T’s geothermal energy system – one of the most comprehensive in the nation – provides heating and cooling to 17 buildings on campus and chilled water to the majority of campus buildings. Completion of the system allowed S&T to decommission its World War II-era power plant last spring. The system is expected to cut energy usage by 50 percent and reduce the university’s carbon footprint by 25,000 metric tons per year.

By Mary Helen Stoltz

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A study in service

December 17, 2014 by
Alyssa Luczak

Biochemical engineering sophomore Alyssa Luczak has been volunteering at All God’s Children Daycare through The Community Partnership for her humanitarian engineering and science minor. Photo by Sam O’Keefe

Although they come from different places and backgrounds, the first students to minor in humanitarian engineering and science at S&T have at least one thing in common – a desire to change the world for the better.

Founded in fall 2014, the HES minor offers a multi-disciplinary approach to improving the well-being of the underserved in the community and throughout the world through volunteer work and service learning.

Before the semester, Curt Elmore, professor of geological engineering and leader of the program, put a call out to interested students, inviting them to a presentation about the new minor. “He said he could only pick five students,” says sophomore Alicia McCabe, one of the students chosen.

Fellow sophomores Danielle Sheahan, Brianna Works, Kataryna Kraemer and Alyssa Luczak joined McCabe as the first to pursue the minor.

Elmore says that the students were a good fit for the program based on their previous volunteer work and their desire to make a positive impact on the world.

The minor requires at least 60 hours of formal experiential service learning; 20 hours a semester for three semesters. Each student is partnered with a campus, local or regional organization, and fulfills her volunteer hours through them. Elmore says he tries to match students up with organizations that have projects they are interested in or have a passion for.

Luczak, a biochemical engineering student from Chicago, works with The Community Partnership. Through The Community Partnership, Luczak has been volunteering at All God’s Children Daycare on North Olive Street.

Danielle Sheahan, Alicia McCabe, Kataryna Kraemer, Alyssa Luczak and Brianna Works

Left to right: Danielle Sheahan, Alicia McCabe, Kataryna Kraemer, Alyssa Luczak and Brianna Works are the first S&T students to minor in humanitarian engineering and science. Photo by Sam O’Keefe

She says she has always enjoyed working with children, but a young boy at the daycare center, in particular, touched her heart. He was shy and had social anxiety, and grew up in foster care, she says. “I knew he really liked bugs and insects, so I brought him a small microscope and some toy insects one day, and showed him how to view them,” she says.

“He has really taken to it,” Luczak adds, fighting tears.

Kraemer, a geological engineering student, is helping organize Phelps County Bank’s 2015 Take a Stand Against Child Abuse event. During the event, which takes place every July, children and their parents sell lemonade from stands set up throughout the community to help raise funds to prevent child abuse in the area.

A native of Barnhart, Missouri, Kraemer mentored troubled students in high school. “Kids that had just gotten out of rehabilitation, mostly for drug addictions or problems with parents,” she says.

McCabe, an environmental engineering student from Creve Coeur, Missouri, is also working with Phelps County Bank. Knowing her interest in computers, PCB assigned her to a project repurposing old computers for households in need.

Sheahan, an environmental engineering student from St. Louis, is partnered with Missouri River Relief, a nonprofit that holds community cleanups of the river and its tributaries. And Works, a geological engineering student from Ozark, Missouri, is developing strategies for poverty alleviation for the Phelps County Faith Distribution, a local, volunteer-based organization that serves the area needy with groceries and other items.

The students say they’re grateful for their service experiences so far, and look forward to further helping the community through the HES minor.

“I’ve always wanted to help people,” says McCabe. “Through this minor, I can help people and get college credit for it.”

By Greg Katski

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