A thermoacoustic combined cooling, heating, and power (CCHP) system for waste heat and LNG cold energy recovery

Abstract Waste energy recovery is crucial for reducing greenhouse gas emissions and alleviating the increasing demand central power grids. In paper, theoretical analyses have been carried out on a novel thermoacoustic combined cooling, heating, system simultaneously recovering waste heat liquefied natural cold energy. The designed based acoustic impedance matching between alternator units maximizing overall exergy efficiency. efficiency, cost savings, emission reductions of optimal are investigated. With temperatures 130 K 500 K, achieves an efficiency 24.1%, allowing 78.4 MWh primary fuel reduction, correspondingly, 30.6 tons CO2 reduction per year. Investigations further performed parametric sensitivities. A method adjusting external electric proposed to allow piston displacement within design parameters. Besides, comparisons made with alternative cogeneration models. results show that can operate effectively various supply modes, which promising adaptation in different applications. Finally, drawn similar existing technologies future developments discussed.