Water at 910 kPa, 25°C enters a 1-m-diameter horizontal pipe with a steady velocity of 13 m/s At the exit the pressure drops to 870 kPa due to viscous resistance.
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- Solve the problem. In a steady flow apparatus, 135 kJ of work is done by each kg of fluid. The specific volume of the fluid, pressure, and speed at the inlet are 0.37 m3/kg, 600 kPa and 16 m/s. The inlet is 32 m above the floor, and the discharge pipe is at floor level. The discharge conditions are 0.62 m3/kg, 100 kPa and 270 m/s.. The total heat loss between the inlet and discharge is 9 kJ/kg of fluid. In flowing through this apparatus, does the specific internal energy increase or decrease, and by how much?Air flows into a turbine at a rate 30 [m 3 /s], a temperature of 1100 [K] anda pressure of 300 [kPa]. The turbine’s work output is 200 [kJ/kg]. Determine thetemperature of the air at the exit, the power output in [kW] and the isentropicefficiency. The pressure ratio of the turbine is 3. The specific gas constant, R, for airis 0.287 [kJ/kg-K].Oxygen flows isentropically through a 100 mm −diameter pipe. At one point, the velocity of flow, pressure , and unit weight are 125 m/s, 450 kPa, and 0.058 kN m3 ⁄ , respectively. At another point a short distance away from the first, the pressure is 360 kPa. Determine the velocity at the second point.
- The fluid condition at the inlet and exit of a horizontal convergent nozzle is analysed. The nozzle is operating steadily and heat loss is assumed negligible. If the specific enthalpy of fluid and velocity of the fluid at the inlet are 3000kJ/kg and 220km/hr respectively. At the exit, the specific enthalpy of fluids is 2,7×10^6 J/kg. Determine (a) the velocity of the fluid at the exit of the nozzle in (m/s), (b) Determine the rate of flow of fluid (mass flow rate) when the inlet area is 0,2m^2 and the specific volume at the inlet is 0,3m^3/kg, (c)Determine exit area of the nozzle when the specific volume at the nozzle exit is 0,6 m^3/kg.A boiler takes in feed water at 70 °C and generates steam at a pressure of 10 bar and drynessfraction 0.92. The wet steam enters a superheater and emerges with the same pressure at atemperature of 400 °C. If the steam flow rate is 5 tonnes per hour, determine (i) the rate atwhich heat transfer takes place in the boiler and (ii) the rate at which heat transfer takes placein the superheater. State any assumptions you have made in relation to the steady flowequation for the process.Consider the flow system illustrated below operating at steady state Obtain the maximum value of the velocity in the pipe 3, ?3??? (in cm/s).
- The fluid condition at the inlet and exit of a horizontal convergent nozzle is analysed. The nozzle is operating steadily and heat loss is assumed negligible. If the specific enthalpy of fluid and velocity of fluid at the inlet are 3000kJ/kg and 220km/hr respectively. At the exit, the specific enthalpy of fluid is 2,7×10^6J/kg.Calculate (a) the velocity of the fluid at the exit of the nozzle in (m/s), (b)Determine the rate of flow of fluid (mass flow rate) when the inlet area is 0,2 m^2 and the specific volume at the inlet is 0,3m^3/kg, (c) Determine exit area of the nozzle when the specific volume at the nozzle exit is 0,6m^3/kg44#6 in steady flow apparatus, 135 kJ of work is done by each kgm og fluid. the specific volume of the fluid, pressure and speed at the inlet are 0.37m^3/kgm,600kPa and 16m/s. the inlet is 32 m above the floor and the discharge pipe is at the floor level. the discharge conditions are 0.62 m^3kgm, 100 kPa and 270m/s. the total heat loss between the inlet and discharge is 9 KJ/kgm of fluid. in flowing through this apparatus, does the specific internal energy increase of decrease, and by how much?Steam generators are a type of heat exchanges that are used in power plants to generate steam at desired pressure and temperature (Fig. Q1.b). In a steam generator, saturated liquid water at 30°C enters a 60-mm diameter tube at the volume flow rate of 12 L/s. After exchanging heat with hot gas, the water changes to steam and leaves the generator at a pressure of 9 MPa and a temperature of 400°C. During this process, the diameter of the water/steam tube does not change.(ii) What is the inlet velocity of the steam?
- In a detergent making process, 25 m3/h of water flows through a 5 cm diameter pipe system asfollows:Point 1, the suction side of the pump, is at a pressure of 175 kPa. After exiting from the pump,the water runs through a 2 m horizontal length of pipe, a fully-open gate valve, another 2 mhorizontal run, a 90º bend, 0.5 m vertical rise, 90º bend, 4 m horizontal run, 90º bend, 1.5 m verticalrise, 90º bend, 2 m horizontal run, half-open globe valve, 6 m horizontal run, 90º bend, 4 m verticalrise, 90º bend, 4.5 m horizontal run, 90º bend, 4 m vertical rise, 90º bend, 9 m horizontal run, fully-open gate valve, 1 m horizontal run then, finally, entry into a tank containing 10 m of liquid. Point2 is the liquid surface in the tank, which is open to atmosphere. (a) If the center-line of the pump and the bottom of the tank are both at grade level, estimate thehead that the pump must deliver. Take the density and viscosity of water as 1000 kg/m3 and 10-3Pa·s, respectively. (b) What is the pump…Subject : Thermofluid Question : Water enters a hydraulic turbine through a 40-cm diameter pipe at a rate of 0.6 m3/s and exits through a 25-cm diameter pipe as shown by Figure 2. The pressure drop in the turbine is measured by a mercury manometer to be 1.4 m. For a combined turbine–generator efficiency of 80 percent and disregarding the effect of the kinetic energy correction factors.Determine the net electric power output. [Note: Take the density of water to be 1000kg/m3]Steam generators are a type of heat exchanges that are used in power plants to generate steam at desired pressure and temperature (Fig. Q1.b). In a steam generator, saturated liquid water at 30°C enters a 60-mm diameter tube at the volume flow rate of 12 L/s. After exchanging heat with hot gas, the water changes to steam and leaves the generator at a pressure of 9 MPa and a temperature of 400°C. During this process, the diameter of the water/steam tube does not change.(iii) What is the exit velocity of the steam?