Charging of the regenerator
Thread Content
In a closed tank, the amount of saturated steam introduced to heat the water inside needs to be regulated by adjusting the opening degree of a valve. The design specifies that the valve should be opened when the actual temperature of the water in the tank is lower than the saturation temperature corresponding to 0.3 MPa, and when the saturation pressure corresponding to (the actual temperature of the water plus a set value of 5 degrees) is higher than the pressure inside the tank; otherwise, the valve should be closed. What is the meaning of these conditions? ? The saturated pressure of (the actual temperature of the water in the tank + 5 degrees) is greater than the actual temperature of the water in the tank; this condition is always satisfied
The purpose of this condition is to ensure that both the pressure and temperature in the regenerator are within safe limits. When the actual temperature of the water in the heat store is lower than the saturation temperature corresponding to 0.3 MPa, it indicates that the water temperature has not yet reached the maximum allowable level. In such cases, it is necessary to open the valve to allow more saturated steam to enter the tank in order to heat the water and raise its temperature, thereby making full use of the heat storage capacity of the heat store. When the actual temperature of the water in the tank, plus the saturated pressure at that temperature, is greater than the pressure inside the tank, it means that the pressure inside the tank is already high enough; adding more saturated steam could cause the tank to explode or get damaged. Therefore, it is necessary to close the valve in order to maintain safety inside the tank. At the same time, this condition also ensures that the regenerator does not exceed its designed temperature and pressure ranges, thereby preventing safety accidents. .