Double effect lithium-water bromide absorption machines, condensed directly by air for air conditioning and refrigeration applications. This machine comprises at least one absorber (a), cooled directly by outside air (or by tower water or other source), which carries out separate processes of heat and mass transfer; at least one condenser (c), cooled directly by outside air (or by tower water or from another source); at least one evaporator (e); and at least one high temperature generator (ga), consisting of a modulating burner and heat exchanger exhaust-solution, renewable heat or boiler heat exchanger. (Machine-translation by Google Translate, not legally binding)