Experimental investigation of a liquid turbine in a full performance test rig

2018 ◽  
Vol 233 (3) ◽  
pp. 337-345 ◽  
Author(s):  
Hongyang Li ◽  
Xuehui Zhang ◽  
Wen Li ◽  
Yangli Zhu ◽  
Zhitao Zuo ◽  
...  
Keyword(s):  
Energy Storage ◽  
Performance Test ◽  
Storage System ◽  
Energy Storage System ◽  
Experimental Results ◽  
Compressed Air ◽  
System Efficiency ◽  
Compressed Air Energy Storage ◽  
Test Rig ◽  
Industrial Systems

In traditional industrial systems, a liquid expander can be used as a substitute for a throttling valve to improve system efficiency and economy. In this paper, the research and development of liquid expanders was reviewed. A set of experimental procedures were presented and an experimental test rig was built to examine the performance of a liquid turbine, which is a model machine of the liquid expander used in the supercritical compressed air energy storage system. At the rated condition, the flow rate of the liquid turbine is 60.7 kg/s, the differential pressure is 0.662 MPa, the output power is 30.44 kW, and the efficiency is 75.16%. The experimental results indicate successful construction of the test rig, which fully demonstrates the advantages of a semi-open and semi-closed system. The experimental results of the liquid turbine are of practical value for verification and development of the liquid expander in supercritical compressed air energy storage system.

Study on Optimization of Pressure Ratio Distribution in Multistage Compressed Air Energy Storage System

2018 ◽  
Author(s):  
Shang Chen ◽  
Tong Zhu ◽  
Huayu Zhang
Keyword(s):  
Energy Efficiency ◽  
Energy Storage ◽  
Pressure Ratio ◽  
Storage System ◽  
System Optimization ◽  
Energy Storage System ◽  
Compressed Air ◽  
System Efficiency ◽  
Compressed Air Energy Storage ◽  
Ratio Distribution

Compressed air energy storage is an effective energy storage technology to solve the instability of wind power in distributed energy resources. In this paper, a multistage compressed air energy storage system optimization model is constructed based on the energy conservation equation. Then the system is optimized by differential evolution to improve the system efficiency. Optimal pressure ratios are proposed to distribute the pressures of compressors and expanders. The impact of pressure ratio distribution curve on the system energy efficiency suggests that the change curve of the characteristics vary in different heat exchanger performance. Results show that the change of thermal transfer reactor performance leads to the variety of optimal distribution pressure ratio and energy efficiency of the system. In addition, the differential ratio distribution factor can be effective on the pressure ratio of reasonable allocation. System efficiency optimization results increased by about 1% compared mean value.

scholarly journals Stirling-powered solar dish collector with compressed air energy storage system

2021 ◽  
Vol 313 ◽  
pp. 06003
Author(s):  
Giovanni Ricco
Keyword(s):  
Energy Storage ◽  
Solar Power ◽  
Storage System ◽  
Energy Storage System ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Concentrated Solar Power ◽  
Total Performance ◽  
Proper Energy

At present time, the SE applied to solar dish reflectors is not competitive compared to other concentrated solar power technologies because Stirling CSP equipment has complex and expensive engines and does not have a proper energy storage system. This paper introduces Stirling solar dish technology, proposes a layout of a simple SE with compressed air storage system, and examines the total performance of the equipment.

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