Determine the diameter using the temperature obtained after mixing at 2 different temperatures
Thread Content
Medium A has a density of 1.34 kg/Nm3, a flow rate of 8683.57 kg/h, a temperature of 170°C, and a pressure of 0.045 MPa. Medium B has a density of 1.44 kg/Nm3, a flow rate of 701.27 kg/h, a temperature of 1100°C, and a pressure of 0.06 MPa. If the temperature of the mixture of these two media is to be 240°C, what sizes should the pipes for A and B be?
Based on the flow rate you provided, assuming the difference in heat capacity is not significant, the temperature of the mixture should be around 240. Select the pipe diameter based on the flow rate, calculate the pressure drop, and ensure that the pressure drop meets the process requirements. Also note that some media have special requirements regarding flow rate, such as oxygen, hydrogen, acetylene, etc.
1. Based on the densities of the two media, A and B, at the corresponding temperatures and pressures, they are in the gas phase. 2. For medium A, once the mixing temperature of 240°C is reached, the pressures are similar, so it should still remain in the gas phase. 3. For medium B, a significant drop in temperature occurs after reaching the mixing temperature; it is necessary to determine whether a phase change will occur and the substance will condense into a liquid state, as otherwise the density differences would be too large
The pipe diameter only needs to meet the flow rate requirements; control is to be achieved through valves, with the flow velocity designed at 8 m/s. A 600mm, B 200mm