| 摘要 |
A vacuum power based energy-saving method; a power system or power device has a thermal dynamic process of enabling a fluid working medium to absorb heat to work and generate power in a cyclical operation process, or has a heat pump process of enabling the fluid working medium to receive power to generate heat pump effect, or has both of the processes. The thermal dynamic process or the heat pump process has at least a gas working medium expansion and compression process; the power system or the power device has a vacuum power process in the cyclical operation process, and the vacuum power process is completed in the vacuum power device or in a different device. The vacuum power process means that the gas working medium has vacuum expansion in the expansion process, and has vacuum compression in the compression process, and at least one gas working medium has a heat discharging process in the process from vacuum expansion to vacuum compression. The vacuum means that the gas working medium is in a state lower than atmospheric pressure or lower than ambient pressure. The thermal dynamic system employing vacuum power extends an expansion process to work in the vacuum state to save energy by reducing the heat discharging temperature, and is suitable for both a high-temperature system and a low-temperature thermal dynamic system. Also provided are various vacuum ejectors and a novel gas-liquid mixing pump to promote vacuum power based energy saving. |
