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Two tanks are connected by a valve and line as shown below. The volumes are both 1 m3. Tank A contains R-134a at 20°C, quality 15% and tank B is evacuated. The valve is opened and saturated vapor flows from A to B until the pressure become equal. The process occurs slowly enough that all temperature stay at 20°C during the process. Find the total heat transfer to the R-134a duringthe process.
Calculate the heat transfer per kilogram of air between sections (1) and (2), and the stagnation pressure at section (2).
Compute the coordinates of the midpoint of the couple DE. Use Maple to plot the coupler curve for this point as a function of the input angle θ and calculate the mobility of the linkage
One kilogram of air as an ideal gas executes a Carnot power cycle having a thermal efficiency 50%. The heat transfer to the air during isothermal expansion is 50 kJ. At the end of the isothermal expansion, the pressure is 574 kPa and the volume is..
Determine the smallest horizontal force required to lift the 260- crate. The coefficient of static friction at all contacting surfaces is = 0.7. Neglect the mass of the wedge.
how long would it take to use up current reserves? suppose the total resource is five times current reserves; if the use rate continues to grow at 2.6 percent, how long would it take to use up the resource?
Use Psychrometric chart to determine Latent portion
Calculate the number of vacancies per cubic meter in gold at 900°C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 18.63 g/cm3 (at 900°C) and 196.9 g/mol, respectively.
The total time it takes to fall is 37 seconds. Find the horizontal lead to hit the target.
A vapor-compression heat pump system uses R-134a as the working fluid. The refrigerant enters the compressor at 0.24 Mpa, 0 degrees Celsius, with a volumetric flow rate of 0.6m^3/min. The compression process is adiabatic to 0.9 MPa, 60 degrees Cel..
a concrete wall which has a surface area of 20 m2 and is 0.30 m thick separates conditioned room air from ambient air.
If the truck starts from rest when xD is zero, and moves forward with a constant acceleration of aD = 5 m/s2, determine the speed of the block at the instant xD = 3 m.
Calculate the torque on each of the two shafts,the power transmitted and the power lost in friction. U=0.3 what is the efficiency of the drive.
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