The binary IL solution, water + [EMIM][DMP] has shown some advantages in thermodynamic cycle performances.
1.
Under the same condensation and absorption temperatures the generation temperature of refrigeration cycle for water + [EMIM][DMP] was somewhat lower than that for H2O + LiBr, so it was possible that absorption chiller was driven by lower temperature level waste heat by means of adopting H2O + [EMIM][DMP] as working fluid.
2.
The coefficient of performance for working fluid H2O + [EMIM][DMP] was somewhat lower than that of H2O + LiBr by 7%, but still higher than 0.7.
3.
The exergetic efficiency ECOP for H2O + [EMIM][DMP] was somewhat lower than for H2O + LiBr and they will all decrease with the evaporation temperature TE.
These characteristics indicate that the binary ionic liquid solution, water + [EMIM][DMP] has potential to be a new working pair for the absorption chiller driven by low-grade waste heat or hot water generated by common solar collector.