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中文摘要：
烘干过程广泛应用于造纸、木材、食品加工、化工等行业,并排放大量湿空气,造成能量极大浪费、能源利用效率极低等问题。提出了一种新型两级开式吸收热泵系统,用于回收烘干排气的潜热,并输出高温蒸汽;高温蒸汽直接回用于烘干过程,大大节约了能源并提高了能源利用效率。新系统也可用于回收其他来源的湿空气的潜热。结合造纸烘干过程,对新系统建立了热力学模型以分析其性能,并与传统闭式吸收式热泵系统性能进行了比较。结果表明新系统可产生满足烘干需求的高温蒸汽,回收烘干排气约50%的废热,降低造纸烘干过程能耗达60%以上。在给定工况下新系统的COP根据发生热源温度的不同可达1.204~1.995,而闭式热泵系统的COP最高仅可达1.409。
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