Aalborg CSPs boiler technology to help solar project achieve 24/7 power generation in China

Aalborg CSP A/S in collaboration with Jiangsu Livo New Energy Technology Co., Ltd have been awarded a contract to supply the steam generation system for the 50MW Shenzen Jinfan CSP plant which is among the first 20 demonstration plants that China intends to build by the end of 2018. The facility is a flagship project with its exceptionally long 15-hours energy storage capability and a good example of how European design combined with local manufacturing can secure on-demand and cost-competitive renewable power generation in China.

The 50 MW Shenzen Jinfan CSP project is part of China’s five-year plan aiming to change the landscape of large-scale electricity production. In the first batch, China awarded 20 demonstration plants to produce 1GW power at RMB1.15/kWh feed-in-tariffs (FiT) if completed before the end of 2018. To reach low price levels, solar projects with large energy storage capabilities have been announced, among which the 50 MW Shenzen Jinfan CSP plant proves to be one of the most efficient ones due to its exceptionally long, 15-hours energy storage capability. This enables the facility to supply power for 24-hours straight in Aksay County.

Aalborg CSP together with its local manufacturing partner, Livo New Energy Technology have been selected to supply the boiler equipment capable of securing uninterrupted conversion of solar heat to superheated steam at 136 bara and 538°C. The SGS4 steam generation system intended for the Shenzen Jinfan project was specifically designed to meet emerging market expectations for cost-efficient and reliable electricity production when using molten salt – an essential criteria developing markets, such as China, demands to meet low price levels.

With the SGS4 steam generator technology, the Shenzen Jinfan CSP plant will benefit from award-winning operational features, such as natural circulation, leakage-free design, and fast-start-up time. These operational benefits translate into significant savings in terms of component CAPEX and OPEX as the plant will be able to produce more energy compared to an ordinary heat exchanger and reduce the need for certain auxiliary components, such as circulation pumps and different drain valves.

Besides the steam producing equipment, Aalborg CSP’s scope of supply also includes instruments, valves, heat tracing for the pressure vessels and all interconnecting piping. Production has already commenced in China and delivery of components is expected to be completed next summer so the facility can supply renewable power to the grid before the end of 2018.

Projects facts:

•Owner/end user of the plant: Shenzhen JinFan Power Co.,Ltd.
•Project name: Shenzhen Jinfan Aksay 50 MW molten salt Parabolic Trough Project
•Plant capacity: 50 MWe
•Technology type: Parabolic troughs with molten salt as heat transfer fluid in the receiver pipes
•Plant layout: 2.5 km2 solar field with 152 rows of parabolic troughs
•Maximum molten salt temperature: 548 ºC
•Plant location: Aksay, Gansu Province, People’s Republic of China
•Energy storage capacity: 12-15 hours/day
•Lifetime of the plant: 25 years
•Expected operational time: December 2018

Aalborg CSP supply facts:

•Client: Jiangsu Livo New Energy Technology Co., Ltd
•Supplied technology: SGS4 steam generation system
•Scope of supply: Two trains of SGS4 steam generators including instruments, valves, heat tracing for the pressure vessels and all interconnecting piping
•Steam temperature: 95 ºC
•Steam production: 22,3 kg/s
•Steam pressure: 136 bara
•Ramp-up rate: 10 ºC/min
•System warranty: 5-years no-leakage and 5-years no fouling warranty
•Expected delivery completion: June 2018