On the basis of double-effect NH3-H2O absorption refrigeration cycle

a boosting double-effect NH3-H2O absorption refrigeration cycle was proposed.Combined with Schulz’s ammonia-water state equation

mathematical model was established to simulate the process and analyze influencing factors of performance such as pressure ratio

refrigeration temperature

cooling water temperature and heat source temperature.A comparison with traditional double-effect ammonia-water absorption refrigeration cycle was also made.The result showed that pressure ratio was a very important factor

which directly affected performance coefficient of the cycle and without changing other factors

the cycle had the optimum pressure ratio.With the appropriate pressure ratio

the cycle could also have higher performance coefficient at lower refrigeration temperature and expanded the scope of refrigeration application of the double-effect cycle.Meanwhile

at the same refrigeration temperature

the cycle reduced the driven heat source temperature and expanded the scope of the available heat source.