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讨论了能量第一定律和第二定律在除湿转轮中的应用,分析了除湿转轮在几何尺寸、运行状态一定的情况下能量效率和火用效率,并建立了除湿转轮的火用效率模型.以显热效率、潜热效率和除湿性能系数以及火用效率作为评价指标,通过对除湿转轮的一维单通道传热传质模型实验分析了影响硅胶除湿转轮火用效率及除湿性能的因素,研究了运行参数(处理空气进口湿度、温度及再生温度)对转轮除湿性能的影响.实验研究发现在近工况下,硅胶除湿转轮除湿性能系数在再生温度为100℃时为最佳,同时火用效率随着再生温度的升高而降低,在100℃时趋于平缓.研究同时表明提高进口处理空气的温度、湿度能够提高除湿转轮的显热效率和潜热效率,但是由于进口温度的升高导致空气的容湿能力提高而使得除湿性能系数降低.
The application of the first law of energy and the second law in dehumidification runner is discussed. The energy efficiency and exergy efficiency of desiccant wheel under certain geometry and running condition are analyzed, and the exergy efficiency Model.The sensible heat efficiency, latent heat efficiency, coefficient of dehumidification performance and exergy efficiency were taken as evaluation indexes to analyze the one-dimensional single-channel heat and mass transfer model of dehumidification rotor and analyze the influence of exergy efficiency and dehumidification performance of silica gel desiccant rotor The effect of operating parameters (humidity, temperature and regeneration temperature) on the dehumidification performance of the rotor was studied.The experimental results showed that the coefficient of dehumidification performance of the silicone dehumidification rotor at the regeneration temperature of 100 ℃ While the efficiency of fire decreases with the increase of regeneration temperature and tends to be gentle at 100 ° C. The research also shows that increasing the temperature and humidity of the imported treatment air can increase the sensible and latent heat efficiency of dehumidification runner, The increase of temperature leads to the increase of the air capacity and the decrease of the coefficient of dehumidification performance.