Given the pipe diameter, flow rate, pressure, and temperature, how is the steam volume calculated?
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Given that the steam pipe diameter is DN25, the flow velocity of the steam is 20 M/S, the temperature is 140°C, and the pressure is 0.6 MPa, how can the mass of steam consumed in 1 hour be calculated? According to the tables, the saturated temperature of steam is 158°C; since 140°C is lower than 160°C, how can the mass of the steam be calculated? I’d like some advice
In my opinion, it is still necessary to make estimates based on the gas phase; although the temperature is below the saturation temperature, most of the substance should still be in the gas phase with some liquid present, and under such conditions the flow rate cannot be accurately determined. Let’s use the density of saturated steam at 160 degrees Celsius, which is 3.26. Mass flow rate = 3.14*（0.025/2）^2*20*3.26
This post was last edited by pzhmotor on 2014-1-3 at 14:29. Region: Zone 1; unsaturated water at temperatures below 350°C. Pressure P = 0.60000000 MPa, Temperature T = 140.00 °C, Specific enthalpy H = 589.35 kJ/kg, Specific entropy S = 1.7390 kJ/(kg·°C), Specific volume V = 0.0010796 m^3/kg. Constant-pressure specific heat CP = 4.2853 kJ/(kg·°C), Constant-volume specific heat CV = 3.5722 kJ/(kg·°C). ...... How can one determine the steam flow velocity? ? In production, steam flow rate has only been estimated inversely using pipe diameter, length, pressure difference at the inlet and outlet (resistance), and steam properties.