A vapor absorption heat pump which includes an absorber for receiving concentrated LiBr solution for absorbing refrigerant, a high temperature generator for receiving weak LiBr and refrigerant solution and for vaporizing the refrigerant and passing the vapor and LiBr solution to a condenser via a separator, where LiBr is further concentrated wherein the refrigerant is condensed and returned to evaporator and the concentrated LiBr is returned to the absorber from the high temperature generator and a low temperature generator, characterized in that at least one electrostatic device is provided in the pathway between the high temperature generator and the absorber return path of the LiBr solution to depress the crystallization/precipitation temperature.
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