scope of application

New energy, solar thermal utilization

Technology provider

Xiyu Sailing Energy Technology (Liaoning) Co., Ltd.

Brief description of technology

The single-tower and dual-disk solar concentrating and collecting power generation system is a new type of commercial concentrating and collecting system. Its full name is the low wind load, high power, full-temperature range solar thermal point concentrating and collecting platform (hereinafter referred to as solar sail). It gives full play to the disc optical concentrating principle, with the characteristics of large geometric concentrating ratio and high heat collecting grade, drawing on the design advantages of the relatively mature trough systems and tower systems in the field of photothermal power generation, it is equipped with a dual-axis tracking system and a high-temperature dynamic sealing core component. Efficient coupling of rear position high-grade thermal energy storage system.

technical information

Floor area: 3217 ㎡, total mirror area: 800 ㎡, high temperature output: 360 ℃, total thermal power output: 540 KWt, power generation: 150 KWe

Commercial applications

1. The project is built on Jinguang Avenue, Delingha City, Haixi Prefecture, Qinghai Province, with a power generation power of 150KW/h, a thermal power of 540KWt, and a total investment of 3.55 million yuan; 2. Multi-energy integration of 100MW-class solar sails in Kekedara New Energy Demonstration Project in Xinjiang

Help/support you hope to receive during the technology transfer process

1. The main difficulty facing the company now is the shortage of funds. Because it is a startup company, it is difficult to fund, and it hopes to successfully complete the financing; 2. The company now lacks mechanical engineers and thermal engineers, and hopes to introduce talents to the company and complete subsequent research and development.

equipment investment

The project is built on Jinguang Avenue, Delingha City, Haixi Prefecture, Qinghai Province, with a power generation power of 150KW/h, a thermal power of 250KW, and an investment amount of 3.55 million yuan. It will be optimized based on this project later. The installed capacity is between 1MW and 10MW. It is estimated that the price of one unit will be about 4 million yuan, which is more than 10MW. Within two years of the construction period, one unit can be less than 3 million yuan.

Annual operation and maintenance fee

1 Steel structure 1 million yuan 2 Civil construction 500,000 yuan 3 Control system 300,000 yuan 4 Heat absorber 500,000 yuan 5 Heat absorber components 500,000 yuan 6 Optical system 300,000 yuan 7 Power generation system 450,000 yuan 8 Labor costs 250,000 yuan 9 Fuel power costs 50,000 yuan 10 Management fees 10,000 yuan 11 Depreciation expenses 5,000 yuan

investment recovery period

According to this 50 MW cogeneration project, the total investment is 1.4 billion yuan, the annual power generation is about 220 million kilowatt-hours, and the electricity revenue is about 1 gross. According to calculation, the payback period can be 8 - 10 years to complete cost recovery.

added benefit

Project single tower double disk solar power generation system trough tower power station scale 50 MW 50 MW 50 MW thermoelectric conversion efficiency 0.43 0.39 0.43 Steam pressure 13.2MPa 11 MPa 13.2MPa Design point DNI 614.24w/m ² Photothermal conversion efficiency 0.765 0.5616 0.5875 Average photoelectric efficiency 0.329 0.219 0.253 Feed water temperature 240 ℃ 245.6 ℃ 230.2 ℃ Evaporation temperature 332.084 ℃ 318.12 ℃ 332.084 ℃ Heat exchange efficiency 0.98 0.98 0.98 Heat storage duration 7.5h 7.5h 7.5h mirror field heat collecting area 0.605km ² 0.706km ² 0.658km ² No. of trough circuits 156,2160 No. of single discs 12500 Heat storage 889.89MWh 981.16MWh 956.63MWh The power station covers an area of 2.43km ² 2.82km ² 2.6km² Total investment 1.4 billion (estimated) 1.7 billion (CGNPC Delingha) 1.13 billion (7 hours of central control heat storage) Annual power generation of 220 million kWh, 197 million kWh, 146 million kWh

comprehensive benefits

Social and ecological benefits (1) The development and utilization of solar energy resources is in line with national industrial policies;(2) The development and utilization of solar energy resources is in line with the direction of energy structure adjustment. Our country is the world's largest coal producer and consumer, and nearly 76% of its energy is supplied by coal. This energy structure that relies too much on fossil fuels has had a great negative environmental, economic and social impact. Large amounts of coal mining, transportation and burning have caused great damage to our country's environment. Vigorously developing renewable energy utilization technologies such as solar energy, wind energy, and biomass energy is an inevitable choice to ensure the security of my country's energy supply and sustainable development. (3) Improving the ecological environment and building a photothermal mirror field can absorb and block solar light, thereby reducing the surface temperature in the site area, greatly reducing the evaporation of the surface, effectively improving the land geology, and facilitating the survival and growth of plants. Moreover, after the washing water from the condenser leaks into the ground, it also provides a certain amount of water for the growth of plants. After the power station is completed, an attempt will be made to plant low and drought-resistant green vegetation under the mirror field, and the desert is expected to become an oasis. It can also indirectly effectively curb the greenhouse effect and widespread sandstorm disasters, and will play a positive role in protecting the environment and reducing pollution. Scientific and technological output 1. Increase in employment: 20 people 2. Application for invention patents: 6 items 3. Application for utility model patents: 10 items 4. Published articles: 10 items

Level of impact of obstacles on technology transfer

Financing difficulties High investment costs or long payback period

technology maturity

From the perspective of investment in power station construction, the single-tower and dual-plate solar concentrating and collecting power generation system is the same as traditional solar tower and trough power stations, but the area per unit power is relatively small. More importantly, due to the large focusing ratio of parabolic disk concentrating, high heat collection grade, high output parameters, and high power generation efficiency of the unit, that is, under the same investment intensity and the same construction scale of power stations, the power generation capacity of SUNSAIL power station can be increased. 20% to 30%, such a technology will surely promote my country's photovoltaic power generation industry to overtake in corners in the competition for international industry development, and achieve a strategic breakthrough of catching up from behind.

technical applicability

Our country is one of the countries rich in solar energy resources in the world. According to the average of nearly 30 years from 1971 to 2000, my country's total solar radiation per unit area is between 1050 and 2,450 kWh/㎡, and areas greater than 1050 kWh/㎡ account for more than 96% of the country's land area. The annual sunshine hours in more than 2/3 of the country's total area are greater than 2000 hours. my country's Xizang, Qinghai, Xinjiang, Gansu, Ningxia, and Inner Mongolia plateaus have the highest total radiation and sunshine hours in the country, making it one of the regions rich in solar energy resources in the world.

technical stability

The project can customize the system composition according to actual needs, and its focusing area ranges from 200~1000 m2; the power generation scale can range from tens of kilowatts to hundreds of megawatts; the heat storage time can range from a few hours to more than ten hours; it can be fixed and mobile; it can realize distributed applications or can also be used to build large-scale centralized power stations; It can be combined with different power generation technologies such as Rankine cycle and Stirling cycle; it can complement and support multiple photothermal technologies, has wide application prospects and simple operation and maintenance.

technical safety

Photothermal power generation belongs to clean production, has less harm to the environment, and is superior to photovoltaic power generation in terms of environmental protection. More importantly, it can solve the storage defect of directly converting photovoltaic and wind power generation into electrical energy, avoid the shackles of not being able to generate electricity at night, rainy days, or when there is strong wind or no wind, and achieve continuous power generation and peak shaving power generation, and solve the problem of abandoning wind and abandoning light in the power grid. And this technology is currently the most attractive solar energy storage technology in the world, it can not only achieve high power, high focal ratio of energy collection, but also has a large-scale energy storage function.

Barriers to technology transfer and promotion

Financing difficulties, high investment costs or long payback periods, difficulties in training local technicians

intellectual property transfer

(1) This project was completed by the cooperation of Xiyu Sailing Energy Technology (Liaoning) Co., Ltd., Juguang Solar Energy Technology (Beijing) Co., Ltd., Qinghai Juguang Solar Energy Technology Co., Ltd., Haixi Huahui Chemical Machinery Engineering Co., Ltd. (2) Patent name: Single-tower multi-dish solar power generation system Patent number: ZL201010279188.X (3) Participating units: 1. Juguang Solar Technology (Beijing) Co., Ltd. 2. Qinghai Juguang Solar Technology Co., Ltd. 3. Haixi Huahui Chemical Machinery Engineering Co., Ltd.