Waste Heat to Power: Full?Cycle Analysis of a Thermally Regenerative Flow Battery

Large amounts of waste heat, below 120 °C, are released globally by industry. To convert this low-temperature heat to power, thermally regenerative flow batteries have recently been studied. Most analyses focused on either the discharging or regeneration phase. However, both phases be considered in order holistically assess performance battery. Therefore, a dynamic, open-access, full-cycle model Cu-NH3 battery is developed Modelica and validated with data from literature. Based model, trade-off between power density efficiency shown that depends only strategy For sensible source an inlet temperature °C transfer at thermodynamic mean about 90 reaches 38 W m-2 over complete cycle, 20% Carnot efficiency. In benchmarking study, production already achieve 34% fully optimized Organic Rankine Cycle. Thus, require further optimization become competitive technology for energy storage heat. This article protected copyright. All rights reserved.