Freshwater and seawater flowing in parallel horizontal pipelines are connected to each other by a double U-tube manometer, as shown in Figure Q1(a). Given the density of freshwater and seawater are 995 kg/m3 and 1059 kg/m3 respectively and assume the gravitational force to be 9.81 m/s2. (i) Construct an equation for the pressure difference between the seawater and freshwater (PSW – PFW) in the pipeline in terms of density (ρ), gravitational force (g) and height (h). (ii) Given the pressure difference between seawater and freshwater is 6.57 kPa, find the value of h, in cm.
Freshwater and seawater flowing in parallel horizontal pipelines are connected to each other by a double U-tube manometer, as shown in Figure Q1(a).
Given the density of freshwater and seawater are 995 kg/m3 and 1059 kg/m3 respectively and assume the gravitational force to be 9.81 m/s2.
(i) Construct an equation for the pressure difference between the seawater and freshwater (PSW – PFW) in the pipeline in terms of density (ρ), gravitational force (g) and height (h).
(ii) Given the pressure difference between seawater and freshwater is 6.57 kPa, find the value of h, in cm.
b) For each stage below, analyse the phase state and its properties: pressure, temperature, specific volume, and quality (if applicable). Then, sketch a T-v diagram with respect to saturation lines by indicating all the information obtained.
(i) Water at T = 190°C and u = 2370 kJ/kg
(ii) Water at P = 11 MPa and T = 450°C
(iii) Water at P = 20 MPa and h = 1300 kJ/kg
(iv) Refrigerant-134a at P = 1.891 MPa and s = 0.795 kJ/kg. K
(v) Refrigerant-134a at T = 12°C with volume flow rate and mass flow rate of 0.0319 m3/s and 40 kg/s, respectively
Trending now
This is a popular solution!
Step by step
Solved in 7 steps with 6 images
