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首页> 外文期刊>Solar Energy >Performance analysis of a latent heat storage system with phase change material for new designed solar collectors in greenhouse heating
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Performance analysis of a latent heat storage system with phase change material for new designed solar collectors in greenhouse heating

机译：用于新型设计的温室集热器的相变材料潜热存储系统的性能分析

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摘要

The continuous increase in the level of greenhouse gas emissions and the rise in fuel prices are the main driving forces behind the efforts for more effectively utilize various sources of renewable energy. In many parts of the world, direct solar radiation is considered to be one of the most prospective sources of energy. In this study, the thermal performance of a phase change thermal storage unit is analyzed and discussed. The storage unit is a component of ten pieced solar air collectors heating system being developed for space heating of a greenhouse and charging of PCM. CaCl_26H_2O was used as PCM in thermal energy storage with a melting temperature of 29 ℃. Hot air delivered by ten pieced solar air collector is passed through the PCM to charge the storage unit. The stored heat is utilized to heat ambient air before being admitted to a greenhouse. This study is based on experimental results of the PCM employed to analyze the transient thermal behavior of the storage unit during the charge and discharge periods. The proposed size of collectors integrated PCM provided about 18-23% of total daily thermal energy requirements of the greenhouse for 3-4 h, in comparison with the conventional heating device.
机译：温室气体排放量的持续增加和燃料价格的上涨是努力更有效地利用各种可再生能源的主要动力。在世界许多地方，直接太阳辐射被认为是最有前途的能源之一。在这项研究中，分析和讨论了相变储热单元的热性能。该存储单元是十片式太阳能集热器加热系统的组成部分，该系统正在开发中，用于温室的空间加热和PCM的充电。 CaCl_26H_2O用作热能储存的PCM，熔点为29℃。由十片式太阳能集热器输送的热空气穿过PCM，为存储单元充电。储存的热量在进入温室之前用于加热环境空气。这项研究基于PCM的实验结果，该PCM用于分析充电和放电期间存储单元的瞬态热行为。与传统的加热装置相比，建议的集成PCM的集热器尺寸可提供3-4小时的温室日总热能需求的18-23％。

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