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Air exerts a pressure of 900KPa within a 0.45 cubic meter container of fixed volume. It is cooled such that the pressure falls to 3.25bar. The temperature of the air is then measured and was found to be 285C. Determine the mass of the air, the initial temperature of the air, the amount of heat transferred during this process.
Air enters a gas turbine with a velocity of 165m/s and a specific enthalphy of 2800KJ/kg and leaves with a velocity of 135m/s and specific enthalpy of 2175KJ/kg. The heat lost to the surrounding turbine is 32.5KJ/kg. Determine power developed by the ..
Liquid water in a pumped flow system experiences varying pressures as it circulates through the system. One concern in designing any such system is to ensure that cavitation does not occur. If the water temperature during operation of a particular sy..
Five kg of water is in a closed rigid container with a volume of 0.3935 m3 and a pressure of 5.0 MPa. Draw and label the states and process on a P-v diagram and determine the amount of heat removed and work done when the pressure is reduced to 1.5 MP..
Water as a saturated vapor at 600 Â°F is contained in a piston-cylinder device that has an initial volume of 30 ft3. The device undergoes a constant temperature process, until the water reaches the saturated liquid condition. Draw and label the state..
Nitrogen in a piston-cylinder assembly undergoes a polytropic expansion process. Initially, nitrogen is at 125 C and 144 kPa. Then it is expanded to a state of 102 kPa and 90 C. determine the heat transfer and work for the process considering no chan..
A slow leak develops in an inner tube (volume, 0.5 ft3, temperature, 600F), wherein it takes 4 hours for the pressure to decrease from 30 to 25 psig. The mass flow rate of air per second under the conditions is given by 0.68pA/(RT)0.5, where the unit..
Explain how you would expect the strength and ductility of a crystalline material to change as the ASTM Grain size number change from 14 to 3.
Evaluate the concentration of vacancies in copper at 650C temperature. What temperature will be needed to heat treat copper such that the concentration of vacancies produced will be 1000 times more than the equilibrium concentration of vacancies at s..
Air at standard temperature and pressure flows through a horizontal galvanized iron pipe at a rate of 4.0 ft3/s. The pressure drop must not exceed 0.75 psi per 100 ft of pipe (and naturally we want to design the most economic pipe). What diameter sho..
What is the composition, in weight percent and atom percent, of an alloy that contains 105.0 kg iron, 20.3 kg of aluminium, and 2.0 kg of copper?
Two samples of different pure substances having equal mass are each placed in rigid containers. The first container is half as large as the second container. After the containers are sealed, the pressure of the first container is observed to be twice..
a designer is working with analuminum oxide al2o3 component with a thermal conductivity of 20.06 wmk. fully dense
An orifice meter is used to measure the volume flow rate in a pipe. It takes 12 readings (in m3/s): 0.0182, 0.0188, 0.0179, 0.0183, 0.0182, 0.0176, 0.0191, 0.0185, 0.0184, 0.0180, 0.0178, and 0.0186. The true volume flow rate is 0.017920 m3/s. Estima..
what is the velocity of the cart when the bullet becomes embedded int he terget? during the firing, the man remains at the same position on the cart. neglect rolling resistance of the cart.
Calculate, using the psychometric equations presented in class, the humidity ratio, enthalpy, specific volume, and dew point of air at 27.4Â°C dry-bulb temperature and 43% relative humidity at standard atmospheric pressure (101.325 kPa). Verify your ..
you take a tumble while water skiing. the handle attached to the tow rope fallsbeneath the water and remains
If the density of air is 1.20 kg/m^3 at the inlet and 1.05 kg/m^3 at the exit, determine the percent increase in the velocity of air as it flows through the dryer.
The Cost of Recharging a Battery, A 12-V automotive storage battery is charged with a constant current of 2 amp for 24 hr.
Discuss any of your actions and/or thought processes
a nylon thread is to be subjected to a 10-n tension. knowing that e 3.2 gpa that the maximum allowable normal stress
a pipe with closed ends has an outer diameter of 80 mm and a wall thickness of 3.0 mm. it is subjected to an internal
Find flow rate A siphon made of a 1 in-inside-diameter pipe is used to maintain a constant level in a 20 ft-deep tank
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