Iceland ragone plot energy storage

What is a Ragone framework for thermal energy storage?

A new Ragone framework for thermal energy storage provides guidance for researchers on how to optimize new thermal storage materials or devices for both energy and power density. This framework will accelerate the development of novel thermal storage technologies.

Can rate capability and Ragone plots be generated for Sensible thermal storage devices?

Although not the focus here, rate capability and Ragone plots can also be generated for sensible thermal storage devices, where the rate capability curve will be approximately linear throughout the discharge process (similar to the voltage response of an electrical capacitor).

Are thermal Ragone plots based on cost-based optimization?

However, the focus of the thermal Ragone plots presented here, as in the Ragone plots used for battery research, is not on cost-based optimization, but rather on the performance trade-off between energy and power. This framework sets a clear objective: push the Ragone curve up (higher power) and to the right (higher energy).

Why is the Ragone curve bounded by efficiency of the thermodynamic cycle?

In general, the Ragone curve is bounded by the efficiency of the thermodynamic cycle and the available energy is reduced at higher powers due to imperfect heat exchange. Both characterizations are theoretical but are a solid basis for further practical analysis. For details, the reader is referred to the respective publications , .