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Calculate the work output per unit time in the turbine if the flow rate is 30 kg/s. Neglect potential and kinetic energy changes. The turbine is insulated.
Calculate the thermal efficiency of the cycle. Neglect the power to run the pump. What is the maximum power output of the turbine if the turbine is operated reversibly?
Determine the rate of heat addition and rejection when this cycle produces 158 hp and the cycle is repeated 1530 times per minute. Use constant sp. heats at room temperature.
If the temperature changes 30 degrees celsius during a measurement of a pressure of 200 MPa, determine the error resulting from the dual sensitivity of the transducer.
Determine the mass flow rate of R-134a and water in their respective cycles, and the overall COP of this cascaded system.
If the environmental temperature is t = 40 F, what part of the above energy was available energy (i.e. energy) before it entered the gaseous system? After it entered it? Show the process on a T-S di
Calculate: the temperatures at the compressor and turbine exits, each in degree R - work of compressor Wc in (Btu/lb) - work of turbine WT in (Btu/lb) the volumetric flow rate of the air entering th
Estimate the velocity with which you would contact the ground if you jumped from an airplane at an altitude of 5000 ft and (a) air resistance is negligible.
If the mass diffusivity of medicine vapor in rubber is 0.2 x 10^-9 m^2/s, find the rate (kmol/s) at which vapor exits through the stopper.
Calculate the mass fraction of helium and the mass density, molar concentration, and molecular weight of the mixture. If the cooling system capacity is 10L, what is the mass of the coolant?
The thickness of the conductive surface is 0.005 m, and its thermal conductivity is 50 W/mK. Determine the logarithmic mean temperature, the water exit temperature t2out and the water mass flow.
Refrigerant 134a enters an adiabatic compressor as saturated vapor at 200kpa at a rate of 30 kg/min and is composed to a vapor at a pressure of 3.0mpa.
How does this subcooling change the power required to drive the compressor as compared to an ideal vapor-compression refrigeration cycle?
Determine the rate of heat addition and rejection for this Otto cycle when it produces 180 hp and the cycle is repeated 1,430 times per minute.
Determine the net work produced per unit mass of air each time this cycle is executed and the cycle's thermal efficiency.
Determine the overall plant efficiency (the ratio of net electric power output to the energy input as fuel) eta overall = % and (b) the required rate of coal supply. m coal = ton/h.
Calculate the total entropy change of the two reservoirs and determine if this heat pump satisfies the 2nd law according to the increase of entropy principle if 1.0 kj of heat is transferred from th
After a period of time, the pressure in the tank rises to 1.5 MPa. Determine the total entropy generation (kJ/K) during this process.
Steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.901 and exits as a saturated liquid. Determine the volumetric flow rate (m3/s) of the steam entering the heat exchanger.
What is normal force and friction, how far the spring is compressed X, Net force of the component along the ramp. Acceleration of block when it moving up the ramp.
Air undergoes a isentropic compression in a piston-cylinder assembly from p1- 1atm, T1 = 70 F TO P2 = 5 atm. assuming air is an ideal gas, with n=1.4, determmine the folllowing sketch the process on
An interference pattern appears on the screen. If the angle from the center fringe to the first bright fringe to the side is 0.184 °, what is the wavelength of the laser light?
Write a test program that calculates and prints out the probability that two or more of n people will have the same birthday for n 2, 3, . . . , 40.
The compressor pressure ratio is 11.7, and the temperature at the turbine inlet is 450 degrees Celsius. Determine the velocity at the exit of this engine's nozzle and the thrust produced.
What is the work input requirement for the pump? What is the heat transfer per unit mass in the boiler? What is the quality at the exit of turbine? What is the work output from the turbine?