Steam energy storage system design

Does a direct steam generation solar power plant have integrated thermal storage?

A direct steam generation solar power plant with integrated thermal storage. J. Solar Energy Eng. Transac. 132, 0310141–0310145. doi: 10.1115/1.4001563 Birnbaum, J., Feldhoff, J. F., Fichtner, M., Hirsch, T., Jöcker, M., Pitz-Paal, R., et al. (2011). Steam temperature stability in a direct steam generation solar power plant.

What is an example of a direct steam generation system?

Example of a direct steam generation system architecture with energy storage. In this particular design, the solar field is operated in a recirculation mode. The preheating, evaporating and superheating sections are used to produce steam (or superheated vapour in an ORC) directly.

What happens during thermal processes in direct steam generation systems?

Of interest are the flow regimes, heat transfer coefficients and pressure drops that are experienced during the thermal processes present in direct steam generation systems, including those occurring in the solar collectors, evaporators, condensers and relevant energy storage schemes during thermal charging and discharging.

What is a single steam source heating storage approach?

In the single steam source heating storage approach, the sensible heat of high-temperature steam is utilized, while low-temperature steam is discharged into the condenser without further use after heat exchange, leading to increased cold-source losses and a decrease in thermal efficiency.

What is a multi-steam source energy storage mode?

The multi-steam source energy storage mode is proposed based on the heat transfer characteristics of molten salt. Compared to the single steam source storage mode, the multi-steam source configuration demonstrates higher heat storage and thermal efficiency while maintaining the same peak shaving capacity during the storage phase.

What is a direct energy storage method?

Saturated liquid water is used as the energy storage medium while saturated steam is fed directly to a turbine, or through an additional heating section to produce superheated vapour. For DSG, this is a direct energy storage method because the energy is stored directly in the HTF (water).