This paper introduces the method for calculating the heat exchange area of the new heat exchanger by adopting HYSYS process simulation technology and definition of virtue components.

介绍了利用HYSYS流程模拟技术，通过采用定义虚拟组分来计算增设换热器换热面积的计算方法。

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With the introduction of the dynamic simulation software HYSYS, the condition for solving the problem is well created.

随着动态hysys模拟软件的引进，给在动态环境下模拟安全阀在火灾工况下的最大泄放量创造了良好的条件。

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