Оценка эффективности криогенных аккумуляторов энергии

Abstract

Cryogenic energy storage systems have significant potential in the field of increasing the stability of power systems by reducing the unevenness of load schedules and electricity generation. They have a higher energy capacity compared to other types of energy storage, but have a relatively low storage efficiency. Due to the wide variety of cryogenic energy systems designs, the use of any one efficiency indicator does not provide an objective picture, so this paper considers the assessment of the efficiency of energy systems in terms of energy, exergy and economic efficiency, and proposes a comprehensive indicator that takes into account all of the above factors. Analysis of published installations shows that the most efficient energy accumulators have a conversion efficiency of about 70% due to the use of compression heat in compressors and the cold of the cryogenic product.