| 摘要 |
Apparatus for storing energy 100, including a first engine stage 130 acting as a compressor during a charging phase of a cycle and as an expander during a discharging phase of the cycle; a first heat store 120 for receiving and storing thermal energy from gas compressed by the first engine stage during the charging phase; a second engine stage 140 acting as an expander during the charging phase to expand gas received from the first heat store to below ambient temperature and as a compressor during the discharging phase; a second heat store 110 for transferring thermal energy to gas expanded by the expander during the charging phase; a thermal coupling means 170 for thermally coupling a part of the apparatus cooled below ambient temperature to a cooling chamber 190 for cooling an object or process within the cooling chamber, for example, to maintain a cryogenic temperature within it. |
