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首页> 外文期刊>International Journal of Heat and Mass Transfer >Mathematical modeling of an integrated system for regeneration of solid desiccants using a solar parabolic dish concentrator
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Mathematical modeling of an integrated system for regeneration of solid desiccants using a solar parabolic dish concentrator

机译：使用太阳能抛物面碟形浓缩器再生固体干燥剂的集成系统的数学模型

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In this work, an integrated system is introduced to regenerate the desiccant materials in solar air conditioning systems. A solar parabolic dish collector and a helically baffled cylindrical cavity receiver were coupled to two series finned-tube heat exchangers, and a fixed bed filled with silica gel. A silicone oil as heat transfer fluid absorbs the solar energy and heats the air to regenerate the silica gels in the bed. The system was studied both experimentally and theoretically. A comprehensive mathematical model was developed for the entire system, and the proposed model was validated with experimental data. The regeneration rate of the desiccant materials and the average daily thermal regeneration efficiency of the system were obtained up to 0.4 kg water/h m(2) and 30% respectively, which compared to the other solar systems, the present system has a good performance and is more efficient. Based on the weather conditions of the installed location of the system, the operational or even geometrical parameters of the system can be designed in such a way that for specified required cooling capacity, the system can provide the required energy for regeneration of desiccant materials. The system performance was studied during a sample day based on real solar irradiation intensity and ambient conditions, and the influence of the effective parameters was investigated on the regeneration rate of the silica gels. (C) 2019 Elsevier Ltd. All rights reserved.
机译：在这项工作中，引入了一个集成系统来再生太阳能空调系统中的干燥剂材料。将一个太阳能抛物面集热器和一个带螺旋挡板的圆柱形空腔接收器连接到两个串联的翅片管热交换器，以及一个装有硅胶的固定床。硅油作为传热流体吸收太阳能并加热空气，使床层中的硅胶再生。对该系统进行了实验和理论研究。为整个系统开发了一个综合的数学模型，并用实验数据验证了所提出的模型。该系统的干燥剂材料的再生率和平均每日热再生效率分别达到0.4 kg水/ hm（2）和30％，与其他太阳能系统相比，本系统具有良好的性能和更有效率。基于系统安装位置的天气状况，可以以这样的方式设计系统的操作或什至几何参数，使得对于指定的所需冷却能力，系统可以提供用于干燥剂材料再生的所需能量。根据实际的太阳辐射强度和环境条件，在采样日内研究了系统性能，并研究了有效参数对硅胶再生速率的影响。 （C）2019 Elsevier Ltd.保留所有权利。

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