scholarly journals A Novel Hybrid-Fuel Storage System of Compressed Air Energy for China

Energies ◽  
2014 ◽  
Vol 7 (8) ◽  
pp. 4988-5010 ◽  
Author(s):  
Wenyi Liu ◽  
Linzhi Liu ◽  
Gang Xu ◽  
Feifei Liang ◽  
Yongping Yang ◽  
...  
Author(s):  
Mohd Suleman

In the present work, Hybrid fuel storage system of compressed air is an extensive technology that provides long duration energy storage. It is encouraged in balancing the large scale penetration of intermittent and dispersed sources of power. Such as wind and solar power into electric grids .The existing Compressed air energy storage (CAES) plants utilize natural gas as fuel. In this project we are replacing the natural gas with the composition of air (15 bar), copper oxide (5-20%), and water (50%). validated with the results obtained using Computational Fluid Dynamics (CFD) analysis. Modeling of energy storage tank is done in Computer Aided Three Dimensional Interactive Application (CATIA) software, mesh has been created using ANSYS workbench software and Analysis is done in Fluent Software. The composition is sent from the inlet of the energy storage tank and temperatures are varied like 298k, 373k, 423k, and 473k. Velocities are also varied like 15m/s, 25m/s, 35m/s, 45m/s. This hybrid fuel storage deals with phase change material by using water and copper by heating at different temperatures to get the energy and re-utilized. This device is applicable for renewable energy application to avoid the heat losses new technique of energy saving in suitable forms. This has the lead to the emergence of fuel storage as a management of energy and allowing it to various levels of energy storage. In many parts of the world this storage of energy plays an important role and a new technique of energy saving in suitable forms. This has the lead to the emergence of fuel storage as a management of energy and allowing it to various levels of energy storage.


Author(s):  
Bin Wu ◽  
Jinhua Wang ◽  
Yue Li ◽  
Jiguo Liu

In the spent fuel storage system of pebble-bed high temperature gas-cooled reactor, several air cylinders would be employed in complex machines, such as the spent fuel charging apparatus and the spent fuel canister crane. The cylinders were designed to actuate movements smoothly in radioactive environment. In order to lock them in safe position when the compressed air source is offline by accident, an electromagnetic self-locking device was designed. When power-off, the compressive spring would push out the lock plunger to enable self-lock. When power-on, the lock plunger would be withdrawn by the magnetic force of the coil to unlock the cylinder. In order to optimize the design more efficiently, numerical simulation was performed to optimize geometry parameters of the structure surrounding the working air gap so as to improve the performance of the device. A prototype was then fabricated. Combining the simulation results with experimental test, the actuating force characteristics of the device in locking and unlocking process was analyzed. The temperature rise when the device stays unlocked with power supply was also calculated and validated. The results showed that this electromagnetic self-locking device could realize the locking and unlocking functions effectively, and the maximum temperature rise also conforms the required limit. The as-fabricated device would help guarantee the fail-safe feature of the air cylinders of complex machines in compressed air outage.


2017 ◽  
Vol 68 (11) ◽  
pp. 2641-2645
Author(s):  
Alexandru Ciocan ◽  
Ovidiu Mihai Balan ◽  
Mihaela Ramona Buga ◽  
Tudor Prisecaru ◽  
Mohand Tazerout

The current paper presents an energy storage system that stores the excessive energy, provided by a hybrid system of renewable energy sources, in the form of compressed air and thermal heat. Using energy storage systems together with renewable energy sources represents a major challenge that could ensure the transition to a viable economic future and a decarbonized economy. Thermodynamic calculations are conducted to investigate the performance of such systems by using Matlab simulation tools. The results indicate the values of primary and global efficiencies for various operating scenarios for the energy storage systems which use compressed air as medium storage, and shows that these could be very effective systems, proving the possibility to supply to the final user three types of energy: electricity, heat and cold function of his needs.


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