RUDN engineer propose a green split system in houses using ground warmth
The residential sector consumes a third of the energy produced and emits almost a third of all carbon monoxide into the atmosphere. Therefore, it is important to optimize the energy consumption processes in homes, in particular, air cooling systems. One possible approach is to use ground-to-air recovery systems, or ground collectors, instead of air conditioners. This is a house “breathing” system, in which air from the street enters pipes buried in the ground. Due to the temperature difference, the air underground cools in hot weather and heats up in cold weather, and then enters the room. A RUDN engineer with colleagues from Iran has developed a new model of a soil collector, which allows maximizing energy benefits.
“Low-carbon and renewable energy sources can reduce air pollution. One of the effective strategies in this direction is geothermal energy. It is affordable, does not pollute the environment and can play an important role, for example, in heating or cooling rooms. Ground-to-air recuperation is considered passive heating. In this system, the pipes are buried underground to a depth of
2-3 m. The pipes absorb heat from the soil and transfer it to the outside air by natural convection to meet the needs of the buildings. In addition, this method helps to reduce noise pollution,” Esmail Lakzian, PhD, researcher at the RUDN University.
The engineers proposed a model with a new pipe geometry. Steel pipes with a diameter of 15 cm are arranged in a “snake” at a distance of 50 cm from each other. RUDN researchers performed computer calculations and ran the model in test mode to check the energy performance. The work of the model was tested on the example of Mashhad, the second largest city in Iran.
Depending on the thermal conductivity of the soil, the outlet temperature is reduced by
“The proposed serpentine ground-to-air recuperation geometry gives good system performance. It has shown applicability to the steppe climate of Mashkhad and will suit other similar climatic conditions around the world,” Esmail Lakzian, PhD, researcher at the RUDN University.
The results are published in Sustainable Energy Technologies and Assessments.
Matilda Pavlovna Mityaeva was born in 1925. In November 1942, she volunteered for frontline duty. She participated in the Great Patriotic War from November 1942 to June 1945 as part of the 53rd Infantry Division of the 475th Infantry Regiment. She was wounded twice.
The team led by Sergey Zyryanov, Head of the Department of General and Clinical Pharmacology, became the winner of the All-Russian competition of scientific projects "Technologies for Human Health".
RUDN University constantly adapts to the changes of the modern world and responds to challenges flexibly. This allows us to keep the standard of a world-class research university. The sphere of science is no exception. Peter Dokukin, Head of the Research Division, presented the updated R&D Programme at the meeting of the RUDN University Academic Council.
Matilda Pavlovna Mityaeva was born in 1925. In November 1942, she volunteered for frontline duty. She participated in the Great Patriotic War from November 1942 to June 1945 as part of the 53rd Infantry Division of the 475th Infantry Regiment. She was wounded twice.
The team led by Sergey Zyryanov, Head of the Department of General and Clinical Pharmacology, became the winner of the All-Russian competition of scientific projects "Technologies for Human Health".
RUDN University constantly adapts to the changes of the modern world and responds to challenges flexibly. This allows us to keep the standard of a world-class research university. The sphere of science is no exception. Peter Dokukin, Head of the Research Division, presented the updated R&D Programme at the meeting of the RUDN University Academic Council.