scholarly journals Development of parallel thermoacoustic engine: Evaluations of onset temperature ratio and thermal efficiency

2015 ◽  
Vol 36 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Yosuke Nakano ◽  
Shin-ichi Sakamoto ◽  
Aiko Kido ◽  
Yoshiaki Watanabe
Keyword(s):  
Thermal Efficiency ◽  
Onset Temperature ◽  
Temperature Ratio ◽  
Thermoacoustic Engine

Effect of Gedeon streaming on thermal efficiency of a travelling-wave thermoacoustic engine

2017 ◽  
Vol 115 ◽  
pp. 1089-1100 ◽  
Author(s):  
Ke Tang ◽  
Ye Feng ◽  
Tao Jin ◽  
Shenghan Jin ◽  
Ming Li ◽  
...  
Keyword(s):  
Thermal Efficiency ◽  
Travelling Wave ◽  
Thermoacoustic Engine

Investigation and Improvement of Thermal Efficiency of Hypersonic Scramjet

2014 ◽  
Author(s):  
Mohammad A. Hossain ◽  
Md. Taibur Rahman ◽  
Mohammad Ikthair Hossain Soiket ◽  
Sarzina Hossain
Keyword(s):  
Thermal Efficiency ◽  
Fluid Velocity ◽  
Specific Impulse ◽  
Flow Analysis ◽  
Inlet Temperature ◽  
Extensive Literature ◽  
Temperature Ratio ◽  
Main Research ◽  
Overall Efficiency ◽  
Inlet Conditions

This work is focused on investigation of thermal efficiency of a Hypersonic scramjet engine and propose some improvement of thermal efficiency based on thermodynamic and fluid flow analysis. Thermal management system is one of the main research fields in scramjet design. As it has no moving parts, the total thermal efficiency depends on inlet conditions, conditions of combustor exit and conditions of the engine exit. A combustor exit condition dictates the velocity and temperature after combustion. we concentrate our focus on this section. The first part of the paper, we tried to describe the fundamental exergy relationship for scramjet and we developed the relation of exergy distribution and exergy delivery rate. From an extensive literature review, we have found the relations between fluid velocity, pressure and temperature, which is described in the later part of the paper. Our main focus is to develop a combined relation of thermal efficiency in terms of engine exit velocity, temperature and air-fuel ratio. Different characteristic parameters such as overall efficiency, thermal efficiency, specific impulse have been determined at different inlet temperature ratio or the cycle static temperature ratio (T3/T0) and an optimum inlet temperature ratio is proposed for maximum overall efficiency.

Study on the onset temperature of a standing-wave thermoacoustic engine based on circuit network theory

2012 ◽  
Vol 55 (10) ◽  
pp. 2864-2868 ◽  
Author(s):  
LiMin Qiu ◽  
BiHui Lai ◽  
YiTao Zhao ◽  
DaMing Sun ◽  
XueJun Zhang ◽  
...  
Keyword(s):  
Standing Wave ◽  
Network Theory ◽  
Onset Temperature ◽  
Thermoacoustic Engine
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