| Study on performance of a packed bed latent heat thermal energy storage unit integrated with solar water heating system |
| |
| 作者姓名： | NALLUSAMY N. SAMPATH S. VELRAJ R. |
| |
| 作者单位： | Department of Mechanical Engineering Sri Venkateswara College of Engineering Chennai 602 105 India，Department of Automobile Engineering Sri Venkateswara College of Engineering Chennai 602 105 India，Institute for Energy Studies College of Engineering Guindy Anna University Chennai 600 025 India |
| |
| 基金项目： | Project supported by Sri Venkateswara college of Engineering,India. |
| |
| 摘 要： | INTRODUCTION Efforts of rational and effective energy man-agement, as well as environmental considerations, increase the interest in using renewable energy sources, especially solar energy. Because of discrep-ancy between the energy supply and demand in solar heating applications, a thermal energy storage (TES) device has to be used for the most effective utilization of the energy source. Energy storage combined with solar collectors and photovoltaic systems have been developed over the…
|
| 关 键 词： | 换热流体 装料 卸料 潜热 相变材料 填充床 |
| 收稿时间： | 2005-12-18 |
| 修稿时间： | 2006-05-10 |
Study on performance of a packed bed latent heat thermal energy storage unit integrated with solar water heating system |
| |
| NALLUSAMY N. SAMPATH S. VELRAJ R..Study on performance of a packed bed latent heat thermal energy storage unit integrated with solar water heating system[J].Journal of Zhejiang University Science,2006,7(8):1422-1430. |
| |
| Authors: | N Nallusamy S Sampath R Velraj |
| |
| Institution: | (1) Department of Mechanical Engineering, Sri Venkateswara College of Engineering, Chennai, 602 105, India;(2) Department of Automobile Engineering, Sri Venkateswara College of Engineering, Chennai, 602 105, India;(3) Institute for Energy Studies, College of Engineering, Guindy, Anna University, Chennai, 600 025, India |
| |
| Abstract: | In thermal systems such as solar thermal and waste heat recovery systems, the available energy supply does not usually coincide in time with the process demand. Hence some form of thermal energy storage (TES) is necessary for the most effective utilization of the energy source. This study deals with the experimental evaluation of thermal performance of a packed bed latent heat TES unit integrated with solar flat plate collector. The TES unit contains paraffin as phase change material (PCM) filled in spherical capsules, which are packed in an insulated cylindrical storage tank. The water used as heat transfer fluid (HTF) to transfer heat from the solar collector to the storage tank also acts as sensible heat storage material. Charging experiments were carried out at varying inlet fluid temperatures to examine the effects of porosity and HTF flow rate on the storage unit performance. The performance parameters such as instantaneous heat stored, cumulative heat stored, charging rate and system efficiency are studied. Discharging experiments were carried out by both continuous and batchwise processes to recover the stored heat, and the results are presented. |
| |
| Keywords: | Charging Discharging Heat transfer fluid (HTF) Latent heat Phase change material (PCM) Packed bed Thermal energy storage (TES) |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
