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吸收式变热器是一种有广阔应用前景的余热回收利用装置 ,可以有效回收 50 %左右的低品位余热 ,但还需要进一步分析可用工质对和它们相关的性能参数。本文以H2 O/LiBr、TFE/NMP、TFE/E1 81和TFE/PYR为工质对 ,对单级吸收式变热器进行了热力学分析。结果表明H2 O/LiBr适用于低温热回收 ,TFE/NMP、TFE/E1 81和TFE/PYR适用于高温热回收
Absorption heat exchanger is a kind of waste heat recovery and utilization device with broad application prospects, which can effectively recover about 50% of the low-grade waste heat. However, further analysis of available working conditions and their related performance parameters is required. In this paper, thermodynamic analysis of single-stage absorption heat-accumulator was carried out using H2 O / LiBr, TFE / NMP, TFE / E1 81 and TFE / PYR as working material pairs. The results show that H2 O / LiBr is suitable for low temperature heat recovery. TFE / NMP, TFE / E1 81 and TFE / PYR are suitable for high temperature heat recovery