%0 Journal Article %T Thermodynamic and exergoeconomic evaluation of waste heat recovery for hydrogen production in a CCHP system %J Hydrogen, Fuel Cell & Energy Storage %I Iranian Research Organization for Science and Technology (IROST) %Z 2980-8537 %A Emamifar*, Armin %D 2022 %\ 05/14/2022 %V 9 %N 1 %P 53-68 %! Thermodynamic and exergoeconomic evaluation of waste heat recovery for hydrogen production in a CCHP system %K Kalina cycle %K PEM electrolyzer %K multigeneration %K exergoeconomic analysis %R 10.22104/ijhfc.2022.5535.1237 %X This study presents the energy, exergy, and economic evaluation of recovering energy from a modified Kalina power-cooling system to provide heating and hydrogen. An ORC is employed to use the waste heat of the Kalina cycle, and the generated power is transmitted to a PEM electrolyzer for hydrogen production. Furthermore, the waste heat of the separator outlet is recovered through a new heat exchanger to provide heating. The results show that the proposed system can produce 317 kW power, 714.7 kW cooling, 50.3 kW heating, and 4.491 kg/h hydrogen. Moreover, the exergoeconomic analysis indicates that the PEM electrolyzer, the cascade heat exchanger, and the vapor generator have the highest cost rate among the system components. Additionally, a parametric study was performed on the system to investigate the variation of some key parameters, including the maximum operating pressure, separator II pressure, ammonia mass fraction in a basic solution, and pinch point temperature difference in the cascade heat exchanger for the thermodynamic and economic performance of the system.   %U https://hfe.irost.ir/article_1154_bd1f6638dce39848881badbc898086e9.pdf