| 摘要 |
<p>A thermal energy storage system has a first vessel 10 and a second vessel 20 connected by power machinery 30. Working fluid is stored as a saturated liquid / vapour mixture. During storage, vapour from the first vessel is compressed, and then transferred to the second vessel via a regenerator 50. The temperature and pressure of the working fluid in the second vessel 20 increases, and the temperature in the first vessel 10 decreases during storage. The stored energy is recovered by the vapour returning through the regenerator 50 and power machinery 30 where it expands to produce work before condensing back into the first vessel, possibly through a second regenerator 40. The regenerator 50 comprises a gas permeable, solid thermal storage medium which, during storage, stores superheat and some latent heat from the vapour passing through it. The storage medium exhibits continuously increasing temperature profiles during storage and a small temperature difference with the surrounding vapour, thereby minimising irreversible losses during the thermal energy transfers.</p> |
