| 摘要 |
The present invention relates to a thermal power plant comprising: -a unit producing heat energy, -a regenerator comprising a bed of energy-storage elements, -a consumer of heat energy, and -a circulation device which: -during a charging phase, circulates a charging heat-transfer fluid from the unit producing heat energy to the regenerator, then through the said regenerator, the said charging heat-transfer fluid entering the said regenerator at a charging temperature Tc of less than 1000°C, and -during a discharging phase, circulates a discharging heat-transfer fluid through the said regenerator, the discharging heat-transfer fluid entering the said regenerator at a discharging temperature Td, the energy-storage elements being made of a material which has a melting point higher than Tc + 50°C and lower than 2000°C, the concentration of all the elements leached from the said material, as measured in accordance with standard EN 12457-2 of December 2002, being less than or equal to 0.5 g/l, the thermal power plant being characterized in that the said material of the energy- storage elements has a characteristic ratio A higher than 0.3, with: A = (Cp(Tc) -Cp(Td)) / Cp(Td) where -Cp(Tc) is the specific heat capacity of the said material at the charging temperature, and -Cp(Td) is the specific heat capacity of the said material at the discharging temperature. |
