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Using rules of thumb for a 200 m2 floor area Denver residence, determine
(a) the auxiliary heating energy required,
(b) the solar projected area, and
(c) the concrete storage mass needed for a maximum 10°C daily temperature swing.
A tank contains a two-phase liquid-vapor mixture of Refrigerant 22 at 10 bar. The mass of saturated liquid in the tank is 25 kg and the quality is 60%. Determine the volume of the tank, in m^3, and the fraction of the total volume occupied by saturat..
A bullet is fired horizontally into a wood block resting on a horizontal, frictionless surface. If the mass of the bullet is 0.02 Kg and the velocity is 600 m/s
A piston-cylinder device initially contains 0.15-kg steam at 3.5 MPa, superheated by 5C. Now the steam loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The c..
Suppose the average number of employees per industry group in the manufacturing database is believed to be less than 150 (1000s). Test this belief as the alternative hypothesis by using the 140 SIC Code industries given in the data- base as the sa..
What is the difference between corrosion and stress corrosion cracking of pipelines? Which of them is more dangerous and why?
Determine the required torque M as a function of (). The mass of eight cubes is 0.25 kg, and the center- of-mass distance r = 0.55r. Neglect friction, and assume that the resultant of the distributed normal force acting on the cube passes through ..
there are two thermal reservoirs the hot reservoir is at 1200 k and the cold reservoir is at 600 k. if you wanted to
Draw the thermal circuit for the wall and label all temperatures, heat rates, and thermal resistances. What insulation thickness L is required to maintain the outer wall surface at a safe-to-touch tempera- ture of To = 40°C?
a cookware company makes cooking pans where both the pan and the pans long handle are made of the same metal joined in
refrigerant 134a is the working fluid in a solar power plant operating on an ideal rankine cycle. saturated vapor x11.0
Which approach would you take and why? Under what conditions would the other choice be better?
A spherical buoy, having a diameter of 1.5 m and weighing 8500 N, anchored to the floor of a lake by a cable. Determine the force extorted by the cable, in N. The density of the lake water is 10^3kg^3/m^3 and g = 9.81m/s^2.
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