For the steam ejector at the top of a vacuum tower, is it beneficial for evacuation if the power steam pressure is above the normal operating pressure? Why?
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Is it beneficial to increase the pressure of the power steam in the vapor ejector at the top of the vacuum tower, thereby exceeding the normal operating pressure, for creating a vacuum at the tower top? Why?
Not necessarily; beyond a certain limit, changes in pressure have only a very slight effect on vacuum pumping
Beyond the limit, it indeed has less impact on the vacuum!
Beyond the normal operating pressure, there is little improvement in the efficiency of the evacuator. The improvement in efficiency is not significant
It hardly works, and it also wastes steam for nothing. It is advantageous to increase the power steam pressure when the condenser cooling water exceeds the designed temperature.
1. An increase in pressure of 0.5 to 1 kilogram is beneficial; an excessive increase does not significantly improve the vacuum level and may even have a negative effect. 2. When the pressure increases too much, more steam enters the subsequent heat exchanger, increasing its thermal load; especially in summer when the temperature of the cooling water is high, this can lead to a decrease in vacuum.
It has little effect on increasing the vacuum level, and it only increases the energy consumption of the device for no reason