Thermodynamic, Exergetic and Thermoeconomic Analyses of Double-Effect LiBr–Water Absorption Refrigeration Systems with a 5 kW High Temperature PEMFC as Heat Source for Data Center Applications

Thermodynamic, exergetic and thermoeconomic analyses were performed on two types of double-effect LiBr–water absorption refrigeration systems (ARS) for use with a 5-kW high-temperature proton exchange membrane fuel cell (HT-PEMFC) as heat source. Proper temperatures the high-pressure generator, combined generator condenser, absorber evaporator determined to meet requirements constant cooling demands data center operations. The balance unit condenser in industrial LiBr-water ARS is important determining flow rate primary vapor refrigerant from generator. system, whose analysis has not been studied analytically, outperformed series system provided 6.5 kW capacity coefficient performance 0.99. cost chilled water estimated by modified productive structure (MOPSA) method approximately 7.18 USD/GJ (=0.026 US$/kWh). Effective efficiency HT-PEMFC increases 57.6% 47.0%.