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目前在供热系统中，仍普遍地采用传统的蒸汽节流式减压，来满足用户对不同用汽参数的要求。节流式减压是一种典型的不可逆过程，造成能量的贬值和浪费。蒸汽喷射器可以在热能输送和转换过程中，使其品位和数量都得到合理的利用，并可在减压过程中利用高品位新蒸汽的有效能提高低品位蒸汽或废热蒸汽热能的品位后，一并供给热用户使用。
At present, in the heating system, the traditional steam throttle decompression is still commonly used to meet the user’s requirements for different steam parameters. Throttling decompression is a typical irreversible process, resulting in devaluation and waste of energy. The steam ejector can make reasonable use of its grade and quantity in the process of heat energy transfer and conversion, and can use the high-grade new steam’s effective energy to increase the grade of low-grade steam or waste heat steam in the decompression process. Together with hot users.