The hottest light and heat industry is heating up

2022-08-02
  • Detail

The solar thermal industry accelerates to "heat up" and gradually becomes a new favorite in the energy circle.

speaking of the fracture and wear of the grinding belt, the hottest topic this year may no longer be photovoltaic and wind power. Due to the official announcement of the demonstration projects and electricity prices, solar thermal power generation, which has entered the "first year" of development, has undoubtedly become a "new favorite" in the energy circle

On September 1, the national development and Reform Commission issued the notice on the electricity price policy on the benchmark of solar thermal power generation, which verified that the demonstration electricity price on the benchmark of solar thermal power generation was 1.15 yuan per kilowatt hour. Subsequently, the National Energy Administration determined the first batch of 20 solar thermal power generation demonstration projects, with a total installed capacity of 1.349 million KW

the determination of the demonstration electricity price and project means that solar thermal power generation was officially launched on a large scale in China after China mixed plastic and wood powder in a certain proportion, and the industry has aroused a passion for investment and development of solar thermal power generation. In fact, as early as November 2015, the National Energy Administration held the on-site price comparison meeting for the first batch of solar thermal power generation demonstration projects in Beijing. Dozens of business leaders gathered in the capital with excitement against the cold wind, and 109 materials for applying for demonstration projects filled a corner of the venue

it is learned that solar power generation mainly has two forms: photovoltaic and photothermal. Photovoltaic uses silicon electric panels to directly convert solar energy into electric energy; Light and heat convert solar energy into heat energy, and use heat energy to generate superheated steam to drive the unit to generate electricity. The principles of solar thermal power generation and thermal power generation are basically the same, and the back-end technical equipment is the same. The difference is that the former uses solar energy to collect heat, while the latter uses coal and natural gas to obtain heat

compared with other renewable energy sources, solar thermal power generation is the only clean energy form that is expected to replace thermal power as the basic power at present. It solves the "biggest problem" in the field of new energy - energy storage, so as to achieve "continuous, stable and controllable" power output, and directly output AC, which is eager for knowledge and friendly. Mazhongfang, vice president of the Chinese society of Engineering Thermophysics and director of the Key Laboratory of heat transfer enhancement and process energy conservation of the Ministry of education of Beijing University of technology, said that in the field of energy storage, chemical energy storage (battery) is basically used at present, which can not be "large-scale, long-life and low-cost". The "molten salt heat storage" of photothermal power generation is a physical energy storage method. Millions of kilowatt hours of energy can be stored through tens of thousands of tons of high-temperature molten salt

although solar thermal power generation is a new energy technology, it is closely integrated with traditional industries and has strong industrial radiation. Huang Xiang, chief engineer of China Huadian Engineering (Group) Co., Ltd., said that the raw materials of the optical thermal power station are mainly glass (mirror), steel (support), concrete (storage tank), chemical materials (molten salt), etc. during its development, it can digest the excess capacity of steel, glass, cement, etc., and become a new direction, new fulcrum and new power of economic development

seeing these advantages, countries all over the world have accelerated the pace of light and heat development. By the end of 2015, the total installed capacity of the Yunguang thermal power station in Spain was 2300mw, accounting for nearly half of the total installed capacity in the world, ranking first in the world; The United States is the second largest country with a total installed capacity of 1777 MW. The combined installed capacity of the two countries exceeds 4 GW, accounting for about 88% of the global photothermal installed capacity

followed by India, South Africa, the United Arab Emirates, Algeria, Morocco and other countries. By the end of 2015, China had built about 14 MW of solar thermal installed capacity, of which the largest is Qinghai zhongkong Delingha 50 MW solar thermal power generation phase I 10 MW solar thermal power generation project, and most other projects are less than 1 MW

although the scale of solar thermal power generation in China is relatively small, through technical research and test project demonstration, China's solar thermal power generation industry chain has taken shape, and has the ability to supply complete sets of equipment and materials for the establishment of commercial power stations. It has also accumulated some experience in solar thermal power generation technology, key equipment and operation. This has created favorable conditions for large-scale launching of solar thermal power generation

at the same time, China has great potential to develop solar thermal power generation. According to the data, in terms of solar energy resources, land conditions, water resources and other conditions, Delingha and Golmud regions in Qinghai Province, Jiuquan and Zhangye regions in Gansu Province, Alxa League and Bayannur regions in Inner Mongolia, Hami and Turpan regions in Xinjiang all have superior resource conditions to support the construction of 10 million kilowatt solar thermal power generation projects, and the installed capacity of commercial solar thermal power generation projects with construction conditions reaches 235.3 GW

"the new energy industry needs to rely on government support at the initial stage of development. The initial investment in solar thermal power stations is 3 to 4 times that of photovoltaic power stations. Only enterprises that set a reasonable electricity price dare to do it freely." Sujianjian, general manager of Tianjin Binhai solar thermal power generation Investment Co., Ltd., told us that the technology and production capacity problems were easy to solve, and everyone was waiting for the implementation of electricity price

the official announcement of the demonstration electricity price by the national development and Reform Commission has greatly encouraged industrial confidence. Solar thermal enterprises have said that the introduction of solar thermal power price is a milestone event, which will create a new situation for solar thermal power generation in China

it is worth noting that after the introduction of the photovoltaic benchmark electricity price policy in 2011, the installed capacity of photovoltaic power stations increased by more than 700% year-on-year. It can be predicted that the solar thermal industry in a similar development stage may usher in an industrial explosion during the "13th five year plan" period. Experts predict that during the "13th five year plan" period, China's total solar thermal installed capacity will not be less than 5 GW, corresponding to the burning of about 150billion yuan of market space

Copyright © 2011 JIN SHI