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首页> 外文期刊>International Journal of Chemistry and Chemical Engineering >Heat and Mass Transfer Study of Liquid Desiccant with Heat Exchanger by Solar Cooling Technology
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Heat and Mass Transfer Study of Liquid Desiccant with Heat Exchanger by Solar Cooling Technology

机译：太阳能冷却技术热交换器液体干燥剂的热和传质研究

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The main objective of this paper is to explore liquid desiccant cooling as a solar alternative to conventional air conditioning techniques, with additional objectives of reducing the electrical energy requirement and improving the humidity control in buildings. Since the desiccant air dehumidification and regeneration processes greatly influence the overall system performance, a detailed study of the simultaneous heat and mass transfer between air and a desiccant in a falling film heat exchanger conducted. Triethylene glycol is selected as the desiccant since it is non corrosive and has good wetting characteristics. Modeling and simulations of absorber/ regenerator performance, is carried out. In addition, desiccant cooling system expected to provide reliable and efficient air conditioning is proposed, and a performance simulation of this system is carried out to provide insight into the design of desiccant cooling systems. Through the study of the absorber/ regenerator, important design variables are defined as the air flow rate and humidity, the desiccant temperature and concentration. Results from the performance simulation of the proposed liquid desiccant cooling system show that in applications with a large latent cooling load, as the electrical energy can be saved as compared to conventional cooling techniques when care is taken to minimize the amount of electrical energy used for auxiliary regeneration heat and a mathematical model is developed for calculation.
机译：本文的主要目的是探讨液体干燥剂冷却作为传统空调技术的太阳能替代品，具有降低电能需求和改善建筑物中湿度控制的额外目的。由于干燥剂空气除湿和再生过程极大地影响了整体系统性能，因此在进行的下降膜热交换器中的空气和干燥剂之间的同时热量和质量传递的详细研究。选择三甘醇作为干燥剂，因为它是非腐蚀性的并且具有良好的润湿特性。进行了吸收器/再生性能的建模和模拟。此外，提出了预期提供可靠且有效的空调的干燥剂冷却系统，并进行该系统的性能模拟，以提供对干燥剂冷却系统的设计。通过对吸收器/再生器的研究，重要的设计变量定义为空气流速和湿度，干燥剂温度和浓度。所提出的液体干燥剂冷却系统的性能模拟结果表明，在具有大的潜冷负载的应用中，与常规冷却技术相比，可以节省电能，以便在护理时最小化用于辅助的电能量开发了再生热量和数学模型进行计算。

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