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Moreover steam jet pump inlet pressure of the first stage to determine the condenser


The first small steam consumption level corresponding to the condenser inlet pressure pn. Fourth,[link widoczny dla zalogowanych], results and discussion, we pumped the gas pressure on the three jet pump 666Pa, 266Pa in four of the five jet pumps and jet pumps 26.7Pa in a variety of different conditions by changing the gas can be pumped condensate vapor content was calculated, obtained by pumping condensable gas content is not also the first stage steam condenser steam inlet pressure and the relationship between consumption curve. As shown in Figure 2 to 5. Graph r = G. / G. To be pumping gas in the percentage of condensable vapor 468l0] _) K} Ja-ring 215 N25 curse has been pumping gas in the jet pump of the steam content can be oysters. Yan steam condenser inlet pressure and the relationship between consumption curve of a 36-a 2oo ~ sac /: I N-25 (dashed line) jet pump condensable vapor content, pressure and condensing steam consumption of the population curve}】 LK1a-map 44P30 N in the cooling water of a curse for the 25Dc (solid line) and 32c (dashed line) is drawn when the gas content of condensable vapor, condensing the steam consumption of population pressure and the curve of content. Drain gas according to the manual steam jet refrigeration recommended data selection. Easy to see from the above calculation,[link widoczny dla zalogowanych], whether a few pumps,[link widoczny dla zalogowanych], corresponding to the first level of the minimum consumption of steam condenser inlet pressure is the only, and as has been pumping gas in the condensable vapor content increases gradually reduced . Figure 6 shows the different series of pump has been pumping gas composition and the best first-class values of the condenser inlet pressure curve. Visible, was pumping gas condensate of the vapor content can be less,[link widoczny dla zalogowanych], the first stage condenser inlet pressure and the best empirical data by selecting the value of the difference greater. Of the same type of pump was pumping gas when the condensable vapor content is zero,[link widoczny dla zalogowanych], calculation and after 468Pd <I '\The relationship between pressure steam consumption I (%) prince Yu 6 ill models in the jet pump has been pumping gas Yan condensable vapor content and the relationship between population pressure condenser the best P30 a former q5; 2.dI.30 a guide 25 (32); 3.4 P30 a curse N-25 (32) I4.15 a ÷ N for a 25; 55P3 a button for a 25. experience the first stage condenser obtained the corresponding population pressure difference between steam consumption of about 20 . As has been pumping gas in the condensable vapor content increases, the calculated population pressure and the best empirical data selected by narrowing the gap between population pressure, then pump the gas consumption is also relatively close. When the Department has been pumping gas barrier as condensable vapor, the calculated population of the first stage of the condenser pressure and at best 25. C cooling water is consistent with empirical data. In other words, according to the experience of the original data to determine the population of the first stage of the condenser pressure was pumping gas barrier only for the Department of condensable vapor situation. In fact, most work has been pumping gas pumps can not base the Ministry of condensable vapor, the empirical formula used to determine the first level of population pressure condenser not economical. In addition, when other parameters unchanged, the cooling water of different temperatures, determined by the empirical formula of the first stage condenser population pressure has also changed. The calculations show that the choice of the cooling water temperature is low, steam the whole pump impact on consumption and water consumption, but the best first-class population pressure had no effect on the condenser (see Figure 4). This is because the cooling water temperature determines the degree of cooling effect, when the cooling water temperature is high, the cooling effect poor, resulting in jet exhaust after-class load increases, pump gas consumption also dogs. On the contrary, when the cooling water temperature is lower, the cooling effect is good, most of the condensable gas is condensed and the last stage injection reduced exhaust load device, the pump steam consumption is reduced. So, cooling water temperature affects only the level of condensation after the injection level, not even on the booster stage, Si impact, which was also confirmed by calculation. In addition, When the other parameters the same, just change the vapor pressure of work is calculated by working steam pressure is not the same time, the steam consumption of the pump are different, corresponding to the first payment of the minimum condenser steam demand the best value is the constant population pressure . working pressure directly influences the choice of the pump series. calculations show that when the pump series will work the lower the pressure, the best first-class population pressure condenser the lower the J when the work pressure is, the pump series (mainly refers to the pressurization level) decreases, its pressure is reduced. This is mainly because the pump at all levels of the total compression ratio and compression ratio result in changes in population pressure on the first level best to change the condenser. V. CONCLUSIONS water vapor in the design jet pump, when the pump is pumping gas composition series and to determine, the first-class population pressure condenser the best choice is unique, not working steam pressure and cooling water affected by the temperature. Otherwise, it will lead to steam consumption of the pump increases.

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