Maximum efficiency of absorption refrigerators at arbitrary cooling power

We consider absorption refrigerators consisting of simultaneously operating Carnot-type heat engine and refrigerator. Their maximum efficiency at given power (MEGP) is by the product MEGPs for internal The only subtlety derivation lies in fact that cooling refrigerator not limited just refrigerator, but, due to first law, also engine. As a specific example, we simultaneous composed low-dissipation (LD) engines refrigerators, which expressions are known. derived expression implies bounds on MEGP LD refrigerators. It slight decrease from its value results large nonlinear increase efficiency, observed engines, whenever ratio powers does diverge. Otherwise, linear as Thus, all practical situations, significantly increases when their slightly decreased maximum.