Advancing energy transition with novel biomass-solar based multigeneration energy system using hydrogen and storage options for sustainable cities
Moslem Sharifishourabi, İbrahim Dinçer, Atef Mohany
Abstract
An integrated energy system is designed to achieve various products such as hydrogen production, electricity, heating, and cooling. It utilizes various subsystems; solar power system, biomass energy system, steam Rankine cycle, Brayton cycle, absorption system, reverse osmosis, and sonohydrogen production. Energy, exergy, economic and environmental analyses are carried out to evaluate the system's performance and sustainability. The engineering equation solver is used for the analyses. The energy efficiencies for the BC, ORC, and SRC are recorded as 29.69%, 10.49%, and 30%, respectively. In regard to exergy efficiency, the BC, ORC, and SRC stand at 46.74%, 62.73%, and 53.43%, respectively. Furthermore, the DEAS attains energetic and exergetic COPs of 1.67 and 0.65, respectively. Additionally, the overall system's energy and exergy efficiencies are 37.68% and 71.25%, respectively. The results from the thermal energy storage system indicate that heat production begins at 7:00 AM, and after two hours, charging of the storage commences, continuing until 17:00, coinciding with the availability of sunlight. The economic analysis demonstrates that with an initial investment of $53.80 million, the integrated multigeneration system projects a net present value ranging from $6.87 million to $173.4 million across different hydrogen selling prices, from $7,000 to $13,000 per ton, by 2054.