When nitrogen is pumped to a reactor, its flow velocity triples, and its temperature increases by...
When nitrogen is pumped to a reactor, its flow velocity triples, and its temperature increases by 110 K. The outlet flange of the pump is located 12 m lower than the inlet flange. The magnitude of the heat loss in the pump is (0.7x92) % of the pump power input. The inlet state and the outlet state are specified as follows: • Inlet: Tin = 110 K, (quality) x = 23, Vin = 20 m/s, (flange diameter) din = 50 mm, • Outlet: Pout = 3 MPa. Determine: (a) the mass flow rate of nitrogen, (b) the input power of the pump in kW, (c) the outlet flange diameter.
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When nitrogen is pumped to a reactor, its flow velocity triples, and its temperature increases by...
not sure how the mass flow rate is 8.47 kg/s Water is pumped from an open...
not sure how the mass flow rate is 8.47 kg/s
Water is pumped from an open reservoir to a large closed tank at a fixed pressure of 2 bar, through a vertical distance of 50 meters using a 5 kW pump. Determine the maximum flow rate of the water (in kg/s). State any assumptions you make. For this flow rate, determine the speed of the water inside a 10 cm diameter pipe. Determine also the pressure difference between the inlet...
1. Water is pumped from a low reservoir to a high reservoir that is 20 m...
1. Water is pumped from a low reservoir to a high reservoir that is 20 m higher in elevation. The water is flowing at 1.5 m/s through a 305 mm internal diameter piping system. The water is at 18 degrees C. There are 1,000 m of piping, six standard 45 degree bends, two standard 90 degree bends, a branch flow tee, three gate valves, a swing check valve, a square inlet and a square outlet. The piping and valves are...
8-C) As shown below water is pumped and sprayed through a nozzle into the atmosphere at 20 m/s at...
8-C) As shown below water is pumped and sprayed through a nozzle into the atmosphere at 20 m/s at an elevation 10 m above the reservoir surface. The mass flow rate is 40 kg/s and the volumetric flow rate is 0.040 m3/s. The large diameter inlet pipe total length is 50 m. The pump effidency is 65%. The longer smaller diameter pipe leaving the pump is 200 m in total length. The pipes have different diameters as indicated below. The...
Problem 2.1 The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance...
Problem 2.1 The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance hydrogen. The flow rate of the stream is 3000 kg/hr. Calculate the rate of flow of nitrogen into the reactor in kg/hr. (MW N2-28 g/mol and MW H2-2 g/mol) Problem 2.2 A 40-wt% aqueous sulfuric acid solution is prepared by mixing pure sulfuric acid (100-wt%; density, ρ = 1.84 g/mL; molar mass, Mw-98 g/mol) with pure water (ρ = 1 g/mL, MW = 18...
Steam with the mass flow rate of 0.75 kg/s enters an adiabatic turbine steadily at 19 MPa, 600°C and 150 m/s
Steam with the mass flow rate of 0.75 kg/s enters an adiabatic turbine steadily at 19 MPa, 600°C and 150 m/s, and leaves at 150 kPa and 350 m/s. The isentropic efficiency of the turbine is 85%. Neglect potential energy. (I) Determine the exit temperature of the steam, and its quality (if saturated mixture) (ii) Calculate the actual power output of the turbine, in kW (iii) Illustrate a T-s diagram with respect to saturation lines for the isentropic process by clearly indicating all pressure, temperature,...
6. Determine the setting of a centrifugal pump, given that flow rate = 2.4 m/min; diameter...
6. Determine the setting of a centrifugal pump, given that flow rate = 2.4 m/min; diameter of intake pipe = 160 mm; entrance losses = one velocity head in suction pipe; required NPSH = 42 kPa; water temperature = 30°C N D1, D2 : inlet and outlet diameters of impeller (rotor) b : impeller width 0,6 : inlet and outlet impeller vane angles (degrees) : speed of rotation of impeller (and its driver) in rpm V, V :tangential and radial...
The following diagram illustrates a simple steam power plant. A 10kg/s flow of liquid water at...
The following diagram illustrates a simple steam power plant. A
10kg/s flow of liquid water at T1=25°C enters the pump at a
pressure of P1=100kPa and is then pumped to a pressure of P2=2MPa.
The boiler then heats the water at constant pressure to produce
superheated vapour at T3=450°C. The steam is then expanded in the
turbine to a final pressure of P4=100kPa. The turbine and pump are
well insulated and may be considered reversible.
a) Find the turbine exit...
fluid Q1: A venture meter is fitted in a pipe of 30 cm diameter inclined at...
fluid
Q1: A venture meter is fitted in a pipe of 30 cm diameter inclined at 40° to the horizontal to measure the flow rate of petrol having a specific gravity of 0.8. The ratio of areas of main pipe and throat is 5 and the throat is at 1 m from the inlet along its length. The difference in manometer head is 40 mm of mercury. Assuming the coefficient of discharge as 0.96. Calculate the discharge through the venture...
The following diagram illustrates a simple steam power plant. A 10kg/s flow of liquid water at...
The following diagram illustrates a simple steam power plant. A
10kg/s flow of liquid water at T1=25°C enters the pump at a
pressure of P1=100kPa and is then pumped to a pressure of P2=2MPa.
The boiler then heats the water at constant pressure to produce
superheated vapour at T3=450°C. The steam is then expanded in the
turbine to a final pressure of P4=100kPa. The turbine and pump are
well insulated and may be considered reversible.
a) Find the turbine exit...
Q1 a) Company A designed a heat pump to supply heat into a library in Canada during...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
not sure how the mass flow rate is 8.47 kg/s
Water is pumped from an open reservoir to a large closed tank at a fixed pressure of 2 bar, through a vertical distance of 50 meters using a 5 kW pump. Determine the maximum flow rate of the water (in kg/s). State any assumptions you make. For this flow rate, determine the speed of the water inside a 10 cm diameter pipe. Determine also the pressure difference between the inlet...
8-C) As shown below water is pumped and sprayed through a nozzle into the atmosphere at 20 m/s at an elevation 10 m above the reservoir surface. The mass flow rate is 40 kg/s and the volumetric flow rate is 0.040 m3/s. The large diameter inlet pipe total length is 50 m. The pump effidency is 65%. The longer smaller diameter pipe leaving the pump is 200 m in total length. The pipes have different diameters as indicated below. The...
Problem 2.1 The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance hydrogen. The flow rate of the stream is 3000 kg/hr. Calculate the rate of flow of nitrogen into the reactor in kg/hr. (MW N2-28 g/mol and MW H2-2 g/mol) Problem 2.2 A 40-wt% aqueous sulfuric acid solution is prepared by mixing pure sulfuric acid (100-wt%; density, ρ = 1.84 g/mL; molar mass, Mw-98 g/mol) with pure water (ρ = 1 g/mL, MW = 18...
6. Determine the setting of a centrifugal pump, given that flow rate = 2.4 m/min; diameter of intake pipe = 160 mm; entrance losses = one velocity head in suction pipe; required NPSH = 42 kPa; water temperature = 30°C N D1, D2 : inlet and outlet diameters of impeller (rotor) b : impeller width 0,6 : inlet and outlet impeller vane angles (degrees) : speed of rotation of impeller (and its driver) in rpm V, V :tangential and radial...
The following diagram illustrates a simple steam power plant. A
10kg/s flow of liquid water at T1=25°C enters the pump at a
pressure of P1=100kPa and is then pumped to a pressure of P2=2MPa.
The boiler then heats the water at constant pressure to produce
superheated vapour at T3=450°C. The steam is then expanded in the
turbine to a final pressure of P4=100kPa. The turbine and pump are
well insulated and may be considered reversible.
a) Find the turbine exit...
fluid
Q1: A venture meter is fitted in a pipe of 30 cm diameter inclined at 40° to the horizontal to measure the flow rate of petrol having a specific gravity of 0.8. The ratio of areas of main pipe and throat is 5 and the throat is at 1 m from the inlet along its length. The difference in manometer head is 40 mm of mercury. Assuming the coefficient of discharge as 0.96. Calculate the discharge through the venture...
The following diagram illustrates a simple steam power plant. A
10kg/s flow of liquid water at T1=25°C enters the pump at a
pressure of P1=100kPa and is then pumped to a pressure of P2=2MPa.
The boiler then heats the water at constant pressure to produce
superheated vapour at T3=450°C. The steam is then expanded in the
turbine to a final pressure of P4=100kPa. The turbine and pump are
well insulated and may be considered reversible.
a) Find the turbine exit...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
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