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The pump has an isentropic pump efficiency of 0.8. a) What is its thermal efficiency? b) At what rate is energy being given off by heat transfer to the cold thermal reservoir?
Determine the power input to the pump in kW. Determine the power output from the turbine in kW. Determine the thermal efficiency of the cycle.
What is the change in exergy of the system above? Assume p0 is 1 bar and T0 is 25 degrees C and b) Repeat part a with 5 kg of air.
Calculate the rate at which heat is supplied to the water heater by the heat pump (kW). Calculate the minimum power required to operate the heat pump.
Calculate the exit temperature. Calculate the power output from the turbine. Show the thermodynamic process underwent by the working fluid on a T-v diagram
Calculate: a) The volumes corresponding to all three states b) The temperature and pressure of air in its final state c) The total boundary work corresponding to the entire process (State 1 - State
A 20g mass vibrates accordings to the equation x=0.0009cis(3pit/2 + pi/2). Find the amplitude, period, max velocity, max acceleration, spring constant "K", and the total energy of the system?
Design your own reciprocating engine. Draw a cycle (either an Otto cycle 4-stroke or a 2-stroke Diesel cycle) in a P-v and a T-s diagram with your own pressure temperature values at each point and c
Consider a Brayton cycle that compresses atmospheric air (101 kPa, 20oC) to 1000 kPa at 1000oC find the work of the compressor, the work delivered to the turbine, and the efficiency.
The condenser is at atmospheric conditions (20oC and 101 kPa). Entering the turbine, it is brought to 30 MPa and 400oC. What is the quality of the steam when it leaves the turbine?
A cylinder 5 m high with a 2 m diameter is filled with water at 20?C at 101 kPa is placed on the ground (circle side down). It is then drained from the bottom.
Calculate the circumferential and longitudinal stresses in the plates when the internal pressure is 800 kN/m2. If the ultimate tensile stress of the material used is 600 MN/m2.
The nozzle has an exit diameter of 3.0cm and discharges the water at 283K and a velocity of 25.0m/s to the atmosphere, where P=101.3kPa. A. What is the net force on the nozzle and what is its direct
The work done during the compression process is equal to 150 kJ. A. What is the final volume in the cylinder. B. What is the final pressure of the air in the cylinder.
Determine the refrigeration load and the COP if this system operated on the simple gas refrigeration cycle. Use the same compressor inlet temperature as given, the same turbine inlet temperature as
An air line, 500 kPa, 600 K, is connected by a valve that is then opened until a final inside pressure of 400 kPa is reached, at which point T = 350 K. Find the air mass that enters, the work, and h
Inlet velocity is quite low and outlet velocity is 150 m/s through a cross-sectional area of 0.20 m2. Calculate the power output in kW
The volume at the end of this process is 0.10 m3, and the temperature at the end of the adiabatic expansion is 0C. Determine: - the heat added - the heat rejected.
A 8.8 hp hydraulic power supply has an output pressure of 1,200 psi. What is the maximum flow rate (in gpm - gallons per minute) that the supply can maintain before losing pressure?
The refrigerant R-22 is used as the working fluid in a non-ideal heat vapor heat pump cycle. Saturated vapor enters the compressor at 10C. What is the heating capacity of the heat pump, in kW. What i
A diving board of uniform cross-section is designed to deflect 6" under the weight of a 150 pound person standing on the end. By what factor must the length of the current board be multiplied to calcu
A freight elevator has a total loaded weight of 4809 pounds and must be able to travel between levels at the rate of 4 feet per second (3 seconds between 12 foot floors).
Calculate the theoretical flame temperature for acetylene in 10% stoichiometric excess of a synthetic air mixture consisting 10 mole % O2 in 90 mole % helium.
How would this number change if the rake angle is equal to a 1t change across the width or diameter of the part being sheared?
If this force is greater that the capacity of the press (60,000 lb), compute the pressure when the full-capacity force of 60,000 lb is applied.