S.N 11 – Shenzhen Nanshan Thermal Plant CCHP
Project location: Shenzhen, Nanshan
Equipment selection: 2 unit 4070KW steam fired LiBr absorption chiller
Main function: Utilize the three-way cogeneration system of Nanshan Thermal Plant to supply cooling to surrounding users.
General introduction
The Shenzhen Nanshan Power Plant CCHP (Combined Cooling, Heat, and Power) project, established in April 1990, represents a significant step towards more sustainable and energy-efficient power generation in Shenzhen. As the city’s economy grew, so did the demand for power, especially with urbanization and the increasing use of air conditioners. To address this, the plant developed a system that integrates waste heat recovery for cooling purposes, effectively improving energy efficiency and reducing emissions.
Key Features of the Project:
- Waste Heat Utilization: The plant focuses on recovering waste heat from flue gas and low-grade hot water or steam as the driving energy for cooling systems. This is achieved using absorption chillers, which convert waste heat into cooling for nearby buildings and industrial applications.
- Energy Cascade Utilization: The project makes use of the waste heat from electricity generation (including coke heat from the process) to provide cooling, optimizing energy usage across different sectors and creating a more efficient system overall.
Benefits of the Project:
- Energy Efficiency: By utilizing waste heat for cooling, the project significantly reduces power consumption for air conditioning, making the cooling process more energy-efficient and less reliant on electricity.
- Pollution Reduction: The shift from traditional oil-fired boilers to more sustainable systems helps reduce pollutant emissions, aligning with China’s goals of energy conservation and emission reduction.
- Circular Economy: This project exemplifies the concept of circular economy, where energy and resources are reused and recycled efficiently, contributing to a more sustainable and environmentally-friendly energy model.
- Environmental Impact: It also serves as a key measure for improving air quality and lowering carbon emissions from power plants, which are significant contributors to pollution.
National Recognition:
- The Nanshan Power Plant's CCHP project was recognized as part of the second batch of national circular economy pilot projects by the National Development and Reform Commission (NDRC). This recognition highlights the project's innovative approach and its role as a model for energy-efficient technologies in China’s power industry.
- It is one of only two pilot projects in the national power industry that have been selected to showcase the potential for energy efficiency and environmental sustainability in large-scale power plants.
Overall Impact:
This CCHP project represents a pioneering effort in China’s energy sector, emphasizing the integration of cooling, heating, and power generation to achieve maximum energy efficiency and sustainability. By reducing dependence on traditional, more polluting systems, it plays an important role in transforming the energy structure of Shenzhen while contributing to China’s broader goals of energy conservation and emission reduction.
Project highlights
The Shenzhen Nanshan Power Plant CCHP project has delivered notable economic and environmental benefits, showcasing the importance of integrating waste heat utilization with energy-efficient technologies. Below is an outline of the project's impacts:
Key Benefits of the CCHP Project:
- Energy Savings:
- By meeting the cooling demand of 190,000 square meters of building area, the system saves 33.41 MW of grid power for the Shenzhen power grid.
- This reduction in demand translates to significant cost savings for the power plant and the grid, amounting to 240 million yuan in avoided investment costs (for both the power plant and grid infrastructure).
- Economic Impact:
- The electricity saved through this project contributes directly to increased GDP for Shenzhen. Specifically, this portion of the grid can generate an estimated 157 million yuan in output value for the city every year.
- The project’s efficiency helps avoid the need for additional investment in power generation and grid expansion, further enhancing Shenzhen's economic growth.
- Environmental Impact:
- Carbon Emissions Reduction: The project helps reduce CO2 emissions by approximately 189,700 tons annually, contributing to China’s commitment to reduce its carbon footprint.
- Sulfur Dioxide (SO2) Reduction: By minimizing the need for traditional energy sources, the project also reduces SO2 emissions by 1,595 tons annually, which has direct benefits for air quality and public health.
- Social and Environmental Benefits:
- The project’s integration of waste heat recovery and energy-efficient cooling systems significantly supports green GDP, making it a key initiative in the region's circular economy strategy.
- It exemplifies a sustainable approach to addressing urban energy needs while promoting environmental protection and economic growth.
Contributions to Shenzhen’s Sustainable Development:
- Energy Conservation: By effectively utilizing waste heat for cooling and optimizing the overall energy consumption, the project plays a pivotal role in energy conservation.
- Emission Reduction: The project's ability to lower emissions from the energy grid and reduce the environmental impact of cooling systems helps improve air quality and public health.
- Circular Economy: The project demonstrates how waste heat can be repurposed into valuable resources, supporting a circular economy by reusing energy instead of relying on non-renewable sources.
Conclusion:
The Shenzhen Nanshan Power Plant CCHP project not only reduces energy costs and supports economic growth but also contributes to a greener future by lowering carbon emissions and air pollutants. It serves as a model of sustainable development, demonstrating the importance of integrating waste heat recovery into large-scale energy systems and providing long-term benefits for both the economy and the environment.
Web: https://www.deepbluechiller.com/
E-Mail: yut@dlhope.com / young@dlhope.com
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Post time: Mar-30-2023
