The invention relates to a method and a
system for accumulating energy by
compressed air and heat accumulation medium simultaneously, and belongs to the field of
compressed air energy accumulating. The
system comprises a motor, an
air compressor, an air storage device, a heat accumulation
tin, a
turbine and an
electric generator. The
system comprises the following principles:
solid heat accumulation medium and electrical heating elements are arranged in the heat accumulation
tin; when the system is charged in off-peak hour period, air is compressed by the
air compressor and exchanges heat with the
solid heat accumulation medium in the heat accumulation
tin; the heat exchanged air is stored in the air accumulation device; the heat exchanged
solid heat accumulation medium is heated continuously by using the electrical heating elements; when the system discharges in peak hour period, the accumulated air is released, and enters the
turbine to work after absorbing the heat from the solid heat accumulation medium; and the
electric generator is driven by the
turbine to generate
electricity. Compared with the conventional adiabatic compression air energy accumulating system, the system has the advantages that the memory capacity is greatly increased; the unit capacity
investment cost is reduced; the system only needs to adopt a one-stage heat accumulation tin and a one-stage turbine; and the system complex degree is low.