Solar Furnace

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Solar Furnace

Solar Furnace in Tashkent Region
Solar Furnace in Tashkent Region

In the scenic outskirts of Tashkent Region, a marvel of engineering and science stands as a beacon of human ingenuity—the Solar Furnace. Towering at 54 meters, this colossal solar oven boasts a parabolic mirror capable of harnessing the sun’s energy to generate blistering temperatures exceeding 3000° C almost instantaneously. It’s a place where the complexities of science meet the thrill of discovery, offering a blend of educational and recreational activities for visitors from all walks of life.

Perched on a hill near the town of Parkent, just 45 kilometers from Tashkent, the Solar Furnace overlooks the village of Changikhisarak. Known by various monikers such as the Sun Furnace, Physics-Sun, and the Sun Institute of Uzbekistan, scientists affectionately refer to it as the «Heliopolygon» and «Heliocomplex.» These names, each with its own historical significance, reflect the facility’s multifaceted legacy.

The roots of this solar colossus trace back to 1940 with the establishment of a physical and technical laboratory in Tashkent, which evolved into the Physicotechnical Institute by 1943. In the ensuing decade, Uzbek scientist Sadik Azimov, primarily focused on nuclear physics, founded a cosmic rays laboratory at the institute. The 1970s marked a pivotal turn as Azimov championed the cause of renewable energy, culminating in the construction of the Big Solar Furnace near Parkent in 1981. By 1986, as the facility neared completion, the Physics-Sun research and production association was organized, leading to the inauguration of the Solar Furnace in 1987.

The furnace, estimated to possess a staggering power output of 1 megawatt, has historically played a crucial role in testing refractory materials for the aerospace industry, aiding in the development of aeroshells for spacecraft. It could simulate a range of conditions, from the vacuum of space to the thin atmosphere akin to that of Mars.

At the heart of the Solar Furnace’s operation are heliostats—massive flat mirrors that redirect sunlight towards a large parabolic concentrator. This concentrator then focuses all the light onto a single point within a technological tower. Each heliostat is composed of 195 smaller mirrors and is equipped with sensors that enable the positioning system to target a precise point on the concentrator. Within the tower lies a specialized chamber where unique environmental conditions can be simulated, complete with protective doors that modulate the influx of light.

Globally, only two solar ovens of this design and capacity exist—one in Uzbekistan and its counterpart, the Odeillo Solar Furnace, in France. The French counterpart features a 54×48 meter concentrator with 63 heliostats, while the Uzbek furnace has a 54×47 meter concentrator accompanied by 62 heliostats.

Post-USSR, the Tashkent solar furnace faced financial challenges that nearly halted its research. However, the facility’s fortunes were revived with the establishment of the Institute of Materials Science NPO “Physics-Sun” in 1993. Presently, the complex is a hive of activity, with research focusing on the impact of high temperatures on materials, testing new ceramic types, and conducting scientific experiments. Moreover, the Physics-Sun complex has opened its doors to the public, allowing tourists and locals alike to delve into its workings.

Visitors to the Solar Furnace can immerse themselves in its storied past and intricate structure. They can experiment with a miniature solar concentrator, ascend the massive concentrator for a panoramic view, and capture memories amidst the reflective glory of the mirrors.