A fundamental study on characteristic of thermoacoustic engine with different tilt angles

被引：18

作者：

Pan, Na ^{[1
]}

Wang, Shuangfeng ^{[1
]}

Shen, Chao ^{[2
]}

机构：

[1] S China Univ Technol, Ministty Educ, Key Lab Enhanced Heat Transfer & Energy Conservat, Guangzhou 510640, Guangdong, Peoples R China

[2] Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2014年 / 74卷

基金：

中国国家自然科学基金;

关键词：

Thermoacoustic engine; Tilt angle; Thermal convection; PIV; DRIVEN ACOUSTIC OSCILLATIONS; HEAT-TRANSFER; TUBE; COLLECTOR; MODEL; FLOW;

D O I：

10.1016/j.ijheatmasstransfer.2014.03.019

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solar powered thermoacoustic engine is an attractive device for solar thermal utilization. Its performance is significantly affected by tilt angle when it rotates with the sun. In this study, the heat transfer and flow characteristics of thermoacoustic engine were investigated under five tilt angles including -45 degrees, -90 degrees, 0 degrees, 45 degrees and 90 degrees. The temperature and velocity fields of thermoacoustic core were measured respectively by Thermal Infrared Imager and Particle Image Velocimetry (PIV). Experimental results show that acoustic oscillation has significant influence on the flow and heat transfer in thermoacoustic engine. This kind of influence is different when thermoacoustic engine works under different tilt angles. Five tilt angles were classified into three situations according to the relative position of two heat exchangers. And the interaction of thermal convection and acoustic oscillation was discussed in each situation. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：228 / 237

页数：10

共 29 条

[1] Design and construction of a solar-powered, thermoacoustically driven, thermoacoustic refrigerator [J].