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A rigid tank initially contains 100 L of saturated liquid and 100 L of saturated vapor of R-12 at 0 °C. A relief valve at the top of the tank allows R-12 vapor to escape when the pressure inside the tank reaches 745 kPa, so that the pressure inside the tank never exceeds that value. The valve at the bottom of the tank is opened, allowing 10 kg of R- 12 from the pipe (10 °C and 900 kPa) to enter the tank. During the process, a total of 11.5 MJ of heat are transferred to the tank. Determine the final mass and final conditions of R-12 at the end of this process.
The maximum flow past a circular cylinder is 2 X the Up stream velocity. The max velocity occurs at the center line of the top of the cylinder.
liquid natural gas lng ships have a boil-off rate of about 0.3 percent per day. for a ship of 50000-m3 capacity
Mainframe computing used to be the only way to manage enterprise data. Then personal computers changed the data management scene. How do these two computing styles differ, and how did shift to PC-based computing evolve.
A coal-fired power plant produces and sells 10,000 MW electricity while operating at 40 % thermal efficiency. The sale price of electric power is $0.04 per kWh. How much power does it reject to the atmosphere? How much power (in the form of heat rate..
The following cycle involves 3 kg of air. From 1 to 2 is polytropic compression where P1=150 kPa, T1=360 K, P2=750 kPa, V2=0.54 m^3 and n=1.2 . From 2 to 3 is constant pressure cooling and from 3 to 1 is constant temperature heating. Determine the to..
a pump supplies oil at 20 gpm to a 2 in diameter double-acting hydraulic cylinder. if the load is 1000lbsextending and
a utility plant runs an ideal rankine cycle with water. the boiler pressure is 3.0 mpa and the cycle has a high
draw a schematic of band structure of a compound that has s and p orbitals occupied. show where is the fermi energy and
1. a 1000 mm long x 100 mm wide x 4 mm thick polymer plate is designed to carry a tensile load 4 kn. in the past a
Atmospheric air at a pressure of 1 atm and dry-bulb temperature of 90F has a wet bulb temp of 85F. Using the psychometric chart, determine (a) the relative humidity, (b) the humidity ratio, (c) the enthalpy, (d) the dew point temp and (e) the water v..
axial flow coolant pump for one lop pressurized nuclear reactor has 75 m head 6m3s flow rate 1440rpm 800 mm diameter
a 90 percent efficient turbine accepts water at 400 kpa in a 16 cm diameter pipe. what is the maximum power output if
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