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化工学报  2012 

增压双效氨水吸收制冷循环性能分析

DOI: 10.3969/j.issn.0438-1157.2012.z2.032, PP. 170-175

Keywords: 氨水吸收,制冷,增压,双效,性能系数

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Abstract:

在双效氨水吸收制冷循环的基础上,提出了一种增压双效氨水吸收制冷循环。结合Schulz氨水状态方程式,通过数学建模对该循环过程进行模拟计算。分析了增压比、制冷温度、热源温度、冷却水温度对循环性能的影响,并和双效氨水吸收制冷循环进行比较。结果表明,增压双效氨水吸收制冷循环中,增压比是非常重要的影响因素,它直接影响循环的性能系数;在其他工况参数不变的条件下,增压双效氨水吸收制冷循环有其最佳的增压比;在适当的增压比下,扩大了双效循环的应用范围,在制冷温度较低时,也可以具有较高的性能系数,而且在相同制冷温度下,降低驱动热源温度也能达到理想的循环效果,从而使本循环可利用的热源范围得以扩展。

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