End difference (definition of end difference and undercooling)

Terminal difference refers to the pressure of condenserterminal temperature differenceThe difference between the saturation temperature and the condenser cooling water outlet temperatureterminal temperature difference, can be understood from the following aspects: Definition and calculation of end difference is an important thermal performance indicatorterminal temperature difference, used to evaluate the working state of the condenser. It calculates the difference between the saturation temperature under condenser pressure and the condenser cooling water outlet temperature to obtain the influencing factors. The higher the cooling water inlet temperature, the worse the cooling water inlet temperature, the worse the cooling effect of the steam in the condenser, and the terminal difference may increase.

The end difference refers to the temperature difference between the saturated steam temperature and the cooling water outlet temperature under the condenser pressure. The subcooling refers to the temperature difference where the condensate temperature is lower than the saturation temperature under the corresponding pressure. The end difference is a measure of the heat exchange efficiency of the condenser. An important indicator in the condenser, steam is cooled by cooling water and condensed into water. The end difference reflects the effect of heat transfer during the steam cooling and condensation process and the cause of the subcooling.

The end difference refers to the difference between the saturation temperature under the condenser pressure and the condenser cooling water outlet temperature. The following points need to be understood. Definition and analysis end difference is an important parameter to measure the heat exchange efficiency of the condenser. The condenser is a condensation equipment of steam turbine exhaust. The internal saturation temperature refers to the temperature at which water vapor under the condenser pressure condenses into water, while the cooling water outlet temperature reflects the cooling water absorbs heat in the condenser.

The end difference refers to the difference between the saturation temperature under condenser pressure and the outlet temperature of the condenser cooling water. The end difference is an important indicator to measure the heat exchange efficiency of the condenser. It reflects the difference between the heat released when the steam in the condenser condenses into water and the heat taken away by the cooling water. The end difference directly affects the vacuum degree of the condenser and the thermal efficiency of the unit. The excessive end difference means that the heat exchange efficiency of the condenser is reduced.

The end difference refers to the difference between the saturation temperature under condenser pressure and the condenser cooling water outlet temperature. The following is a detailed explanation of the end difference. The end difference is an important parameter to measure the heat exchange efficiency of the condenser. It reflects the degree of heat released during condensation in the condenser being taken away by the cooling water influencing factors The higher the cooling water inlet temperature, the higher the cooling water inlet temperature, the correspondingly increased the condenser outlet water temperature, thus reducing the end difference.

End difference and subcooling degree End difference refers to the difference between the saturation temperature under condenser pressure and the condenser cooling water outlet temperature. Subcooling refers to the condenser in a high vacuum state. No matter what method is used, there are always some non-condensed gases. The reasons for the increase in end difference include scaling on the water side or steam side of the condenser copper tube and clogging on the steam side of the condenser, increasing the amount of cooling water leaking into the air cooling water pipe on the steam side of the condenser, etc. What is the end difference? The size of the end difference and the condenser.

The upper end difference refers to the difference between the extraction saturation temperature of the high-pressure heater and the feed water outlet temperature. The calculation formula is that the upper end difference = the saturation temperature corresponding to the extraction pressure on the steam side. The upper end difference in the outlet temperature of the water side may indicate an abnormality in the drainage adjustment device, causing the HP heater water level to be too high or the HP heater leaks, which will reduce the contact area between the steam and the steel pipe, thus affecting the thermal efficiency. In extreme cases, this may cause water intake to the turbine and cause serious damage to the equipment.