Experimental research on direct expansion heat pump flue gas waste heat recovery and humidification nitrogen reduction system

Experimental Investigation of the Improvement Potential of a Heat Pump Equipped with a Two-Phase Ejector

“…Therefore, the heat pump's working conditions are limited. For these reasons, many efforts have been made to improve various aspects of the heating Energies 2023, 16, 5889 2 of 19 performance [6][7][8][9][10][11]. Chiriboga et al [12] and Lim et al [13] proposed a geothermal-source heat pump that aimed to produce a heating temperature of 50-70 • C. Their technique was based on the fact that the available heat source temperature is quite high; hence, the compression pressure ratio of the compressor (PR comp ) is decreased, which results in lower electricity consumption and a lower compressor discharge temperature.…”

Research on Thermodynamic Characteristics of the Saturated Flue Gas Waste Heat Recovery to Reduce Turbine Extraction Steam

“…Combined with the current research, it is difficult to match the appropriate cold source media to recover the saturated flue gas waste heat. Meanwhile, the utilization pathway of the saturated flue gas waste heat is affected by the temperature level. ,− The absorption heat pump can use dehumidification solutions as circulating media, which have strong hygroscopic properties, − and provide the stable cold source medium to recover flue gas waste heat. This paper proposes a saturated flue gas waste heat recovery system including an absorption heat pump and a direct-contact spray tower.…”