Study on Power System Using High Pressure Air Generator for Saving Energy

电力系统采用高压空气发生器节能研究

基本信息

批准号：
09555073
负责人：
IKEGAMI Makoto
金额：
$ 8.83万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555073/
关键词：
Engine Compressor Diesel Engine Energy Recovery Expander Exergy 過給

项目摘要

A hybrid power system using high-pressure air as working fluid has been proposed and its pefformance and efficiency were studied. This system is mainly composed of a diesel compressor, a high-pressure air tank and an air expander. The diesel compressor generates high-pressure air by compression using energy supplied by combustion in the same cylinder. The Air is transferred into the air tank, stored there and is delivered to the expander to obtain the power output according to the power demand. This system is supposed to have some advantages, that is, reduction in transmission loss using variable output air expander, improvement in engine thermal efficiency due to the limitation of its speed and output and energy saving due to brake energy recovery.The results of energy and exergy analysis show that the ideal cycle of this system has the same thermal efficiency as Brayton cycle and that some parameters such as pressure ratio and cut-off ratio should be optimized for increasing exergy efficiency when various power output is required.The prototype of the air expander was designed and constructed. The test results show that the output power could not be fully controlled over the wide range. The modification of valve shape proved to be effective to extend the controllable output range. In addition the increase in exhaust port time area will give better thermal efficiency and broader power range.

已经提出了使用高压空气作为工作流体的混合动力系统，并研究了其层状和效率。该系统主要由柴油压缩机，高压空气箱和空气扩张器组成。柴油压缩机通过使用同一气缸中燃烧提供的能量来通过压缩产生高压空气。空气被转移到空气箱中，并存放在那里，并通过电源需求传递到扩展器以获取功率输出。该系统应该具有一些优势，即使用可变的输出空气扩张器减少传输损失，由于限制其速度，输出以及由于制动器能量恢复而引起的发动机热效率的提高，能源和自行量分析的结果表明，该系统的理想循环对于Brayton循环和某些参数具有相同的热量效率，并且在某些参数上具有相同的热量效率，并且该系统的效率相同。需要。设计和构建空气扩张器的原型。测试结果表明，在较大范围内无法完全控制输出功率。事实证明，阀形的修饰可有效扩展可控的输出范围。此外，排气端口时间区域的增加将带来更好的热效率和更广泛的功率范围。