9Rivera W, Best R, Hernandez J. Thermodynamic study of advanced absorption heat transformer-I . Single and two stage configurations with heat exchangers [ J ]. Heat Recovery Systems & CHP, 1994, 14(2) : 173-193.
10Bokelmann H, Alefeld G. Advances in heat transformers [ A ]. Proceedings of the International Absorption Heat Pump Conference[C], New Orleans, LA, USA, 1994, 107-116.