A Study of Performance Simulation of aConcentric Vertical Oval Catheter in theVacuum Tube Solar Energy Collector

• Main Authors: I-Tsai Lin, 林義財
• Other Authors: Wen-Ruey Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/39445202938704227045

碩士 === 遠東科技大學 === 機械工程研究所 === 98 === In recent years , fast as energy consumption, the abuse of natural resources has become increasingly inadequate to the normal supply of daily necessities. In order to protect the Earth's natural resources and future generations. Alternative way to produce energy more and more important , as for the promotion of renewable energy research and development and application . And alternative energy sources as solar energy the most widely used. The solar energy is an easily accessible natural resources, the environmental protection and pollution-free for most of its features. In recent years, solar energy is used most frequently in the general household vacuum tube solar water heater, solar water heater was composed of two major parts which are the vacuum tube collectors and heat storage device. In this thesis, numerical simulations, testing, oval tube upright vacuum tube model in the solar heating under the flow field, temperature distribution, whether the enhancement of collection efficiency. Elliptical tube shape of the main study, the length of the change, whether in the solar vacuum tube collector collection efficiency has been improved.