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以H2 O/LiBr和TFE/NMP为工质对分析了双效吸收式变热器的热力性能。结果表明双效吸收式变热器可达到和两级吸收式变热器同样高的温度提升 ,但运行范围比两级吸收式变热器窄。以TFE/NMP为工质对的双效吸收式变热器比以H2 O/LiBr为工质对的双效吸收式变热器得到的温升高 ,但系统性能降低。
The thermodynamic properties of double effect absorption heat exchangers were analyzed with H2 O / LiBr and TFE / NMP as working medium. The results show that the dual-effect absorption heat exchanger can achieve the same high temperature rise as the two-stage absorption heat-variable heat exchanger but its operating range is narrower than that of the two-stage absorption heat-variable heatsink. Dual-effect absorption heat exchangers using TFE / NMP as working-material pair have higher temperature rise than system with H2 O / LiBr as working-material pair but lower system performance.