The first solar thermal power station in China operates stably

Probably people have seen children holding a small mirror, facing the sun at an angle, and then reflecting the sun's rays. But what if there were 100 large mirrors that shook the sun onto an object? The temperature of this object will certainly increase. Scientists of the Institute of Electrical Engineering of the Chinese Academy of Sciences and other units have used this principle to build China's first megawatt solar tower thermal power station with completely independent intellectual property rights.

A few days ago, the new power station that passed the acceptance inspection near Kangzhuang Town, Yanqing County, Beijing. There is a 119-meter-high heat collector tower in the power station. There is a giant heat sink on the tower. On the ground on the south side of the heat-collecting tower, there are 100 large glass mirrors (heliostats) distributed in a fan-shaped pattern, and each mirror has 100 square meters. As the sun rises, under the automatic control of the computer, these mirrors reflect the sunlight to the heat sink of the heat collector tower, can produce a high temperature of 400°C, and then realize a 1.5 MW steam turbine through thermal power transformation. Generator power generation operation. It can also store energy from high-temperature heat-conducting oil storage systems and low-temperature saturated steam energy storage systems, and meets 1 MW of power generation demand.

It is understood that this solar thermal power generation technology and system demonstration key project was approved by the Ministry of Science and Technology in 2006 and was officially launched in January 2007. According to Wang Zhifeng, team leader of the project's overall group and researcher of the Institute of Electrical Engineering of the Chinese Academy of Sciences, the project has developed solar thermal power system integration technology, plant-wide control technology, high-precision low-cost heliostat technology, and high-reliability heat absorption-heat transfer-accumulation technology. After researching key technologies, a solar thermal power station simulator was developed, a heliostat optical performance inspection platform, a wind tunnel, a molten salt working thermal hydraulic test bench, and a water/steam thermal hydraulic test bench were built. Batch of solar thermal power generation research and test platforms.

According to reports, according to the calculation of local solar radiation resources in Yanqing County, Beijing, the annual power generation capacity of this power station will reach approximately 1.95 million degrees, which is equivalent to the saving of 663 tons of standard coal, 2336 tons of carbon dioxide emission, and 20% of carbon dioxide emissions per year compared to traditional thermal power stations. 17 tons, 136 tons of dust particles.