NH3-H2O喷射-吸收复合式燃气热水炉系统研究及分析

本文利用喷射器的工作原理构造出具有更高效率的喷射 吸收复合式燃气热水炉系统，选定氨水溶液为工质，建立了所设计系统的物理模型和数学模型，在选定系统合理匹配参数的基础上，计算了各换热器所交换热量的占比。结果表明，高温换热器吸收的烟气热量最多，其吸收的热量约占总换热量的40%以上；而低温换热器吸收的热量最少，一般不超过总换热量的25%。所设计系统在冬季效率也可达到110%以上，而夏季时效率更是可高达120%以上，可真正实现高效节能。

Research and analysis of an ammonia-water ejector absorptioncomposite gas water heater

We construct highly efficient ejector absorption composite gas water heater with operating principle of an ejector. We further design its physical and mathematical models with ammonia water solution as working fluid. We also calculate the proportion of each heat exchanger based on the selection of reasonable matching parameters. Results indicate that high temperature heat exchanger can absorb the maximum gas heat, more than 40% of total transferred heat. However, low temperature heat exchanger can absorb the minimum gas heat, no more than 25% of the total transferred heat. Thermal efficiency of the heater can attain more than 110% in winter, and even more than 120% in summer. High efficiency and energy saving can therefore be practically implemented.