An isentropic pump compresses water between the pressures listed in Problem 1 (30 & 8000 kPa)...

An isentropic pump compresses water between the pressures listed in Problem 1 (30 & 8000 kPa) at the same mass flow rate (3 kg/s). Assuming saturated liquid conditions at the inlet of the pump, determine:

a) The power required to operate the pump

b) The ratio of the turbine power output from problem 1 to the required power input of the pump

Expert Solution

samet mamat answered 2 years ago

Water at 60 ∘C is pressurized in a pump from 90 kPa to 1600 kPa. If...

Water at 60 ∘C is pressurized in a pump from 90 kPa to 1600 kPa. If this requires 2.4 kJ for every kg of water that moves through the pump, then what is the isentropic efficiency of the pump? (Assume the mechanical efficiency is 100%)

A geothermal single effect water lithium bromide is operating between 10 kPa and 1 kPa, and...

A geothermal single effect water lithium bromide is operating between 10 kPa and 1 kPa, and between lithium bromide concentrations of 60% and 55 0/0 . The solution heat exchanger effectiveness is 0.9. The generator temperature is 110 degrees * C and the absorber temperature is 45.81 degrees * C . The refrigerant mass flow rate is 0.2 kg/ s. Calculate a. The cooling load of the evaporator b. The mass flow rate of the rich solution leaving the generator...

(10 pts) A simple Rankine cycle operates between the pressures of 10 kPa and 6 MPa....

(10 pts) A simple Rankine cycle operates between the pressures of 10 kPa and 6 MPa. Steam exits the boiler at 550oC, liquid exits the condenser at 40oC, the “wet steam” exiting the turbine has a quality of 90%, the pump efficiency is 64% and the net power output from the system is 87.2 MW. Determine: (2 pts) The mass flow rate through the system, in kg/s. (2 pts) The rate of heat rejection from the condenser, in kW. (2...

1. One pump is not enough to pump water to a very high tank. If you...

1. One pump is not enough to pump water to a very high tank. If you use two pumps (to increase h), how are you going to install them? (a) in parallel (b) in series 2. For turbulent flow of all pipes, friction factor (f) depends on: (a) Reynolds number (Re) only (b) relative roughness (e/D) only (c) both Re and e/D 4. For a pumping system, which tends to cause cavitation? (a) placing the pump close to the source...

1) A tank is full of water. Find the work W required to pump the water...

1) A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the weight density of water. Assume that a = 4 m, b = 4 m, c = 12 m,and d = 1 m.) W = ___ J I got 5017600 then in scientific notation it would be 5.0176 X 10^6, then in Juls in would be 5.02? I got the answer...

Directions: The Acme Water Pump Company has a problem. The pumps are fairly expensive to make...

Directions: The Acme Water Pump Company has a problem. The pumps are fairly expensive to make and store, so the company tends to keep the inventory low. At the same time, it is important to respond to demand quickly, since a customer who wants a water pump is very likely to get one from a competitor if Acme doesn’t have one available immediately. Determine what the projected available balance, master production schedule, and the available to promise is for each...

1) At 24 C the vapor pressure of water is 3 kPa. The vapor pressure of...

1) At 24 C the vapor pressure of water is 3 kPa. The vapor pressure of water over a sample is 2 kPa, what is the water activity of the sample? 2) The water activity above a saturated NaCl solution is 0.75. If a sample is enclosed in a jar with the NaCl solution and equilibrium is achieved, what is the water activity of the sample? NaCl and the sample are in separate containers within the jar.

1) Saturated liquid water at a pressure of 10 kPa is sent to a steam boiler...

1) Saturated liquid water at a pressure of 10 kPa is sent to a steam boiler with a pressure of 4MPa with a reversible adiabatic pump and heated up to 500oC at constant pressure in the boiler. The mass flow of the steam is 4.2 kg / s. Transactions are carried out continuously. a) Show the processes on the T-v or T-s diagram with saturated vapor and liquid curves. b) Calculate the required pump power c) Calculate the amount of...

1. A turbo pump works at 1200 rpm rotation, with the ability to raise water as...

1. A turbo pump works at 1200 rpm rotation, with the ability to raise water as high as 200 m as much as 650 liters / minute, which is driven by an electric motor. But because the electric voltage should be 220 volts decreased so that the pump shaft spindle only 1000 rpm with the character of the pump. The pump efficiency assumption is 85%. a. How much power is needed if the voltage is still normal 220 volt. b....

A 200 litre tank initially contains water at 100 kPa and a quality of 1%. Heat...

A 200 litre tank initially contains water at 100 kPa and a quality of 1%. Heat is transferred to the water, thereby raising its pressure and temperature. At a pressure of 2 MPa, a safety valve opens, and saturated vapour at 2 MPa flows out. The process continues, maintaining 2 MPa inside until the quality in the tank is 90%, then stops. Determine the total mass if water that flowed out and the total heat transfer. *I’ve seen others have...

Question