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1. Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 248C and exits at 1 bar. If the refrigerant undergoes a throttling process, what is the quality of the refrigerant exiting the expansion valve?
2. Propane vapor enters a valve at 1.0 MPa, 608C, and leaves at 0.3 MPa. If the propane undergoes a throttling process, what is the temperature of the propane leaving the valve, in 8C?
3. A large pipe carries steam as a two-phase liquid-vapor mixture at 1.0 MPa. A small quantity is withdrawn through a throttling calorimeter, where it undergoes a throttling process to an exit pressure of 0.1 MPa. For what range of exit temperatures, in 8C, can the calorimeter be used to determine the quality of the steam in the pipe? What is the corresponding range of steam quality values?
A Rankine power generation cycle using steam operates at a temperature of 100°C in the condenser, a pressure of 3.0 MPa in the evaporator, and a maximum temperature of 600°C. Assuming the pump and turbine operate reversibly, plot the cycle on a T-s d..
Assuming the plant operates on the ideal vapor-compression cycle using refrigerant 134-a between the pressure limits of 120 and 700 kPa, determine
materials are deep-seated in human culture. do you agree with this statement? why or why not? give examples of
to match the loudness of a high frequency speaker of 95 db at 10000hz what should be the sound pressure levels in db of
A stream of air at 40 deg F, 30% rh flowing at 200 CFM is mixed with a stream of air at 95 deg F, 50% rh, flowing at 110 CFM. Determine the temperature and humidity ratio of the mixture.
A cube 2 ft on an edge has its lower half of material with SG = 1.4 and upper half SG = 0.6. It is fully submerged in a 2 layer liquid (lighter liquid above has SG = 0.9 and heavier liquid below has SG = 1.2). Determine the height of the top of the c..
Perform a force analysis to find the bearing reaction forces, draw shear and bending moment, and torque diagrams and determine the critical locations for stress design.
a tank has two rooms separated by a membrane. room a has 1kg of air and a volume of 0.5 m3 room b has 0.75 m3 of air
A deep freezer for hazardous chemicals is to be maintained at -20oF to insure a safe environment for the chemicals. The freezer is in a room that is kept at 60oF, and the inner and outer walls of the freezer are made of 26-gauge (0.0184-in) steel.
When 0.848 g of finely divided iron is burned, 1.212 g of a reddish brown oxide is obtained. Write a balanced chemical equation for the reaction of iron and molecular oxygen based on the empirical formula.
Write a term paper on Tooling design for composite manufacturing - how tooling is designed for different applications to make composite airplane parts and such.
one kilogram of ammonia initially saturated vapor at -4degc undergoes a constant volume process to a final pressure of
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