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Design a stack effect/solar chimney (vented Trombe wall) to produce an average velocity of 0.3 m/s within a 4 m wide by 5 m long by 3 m high room. Justify your assumptions.
A cylindrical specimen of this alloy 24 mm in diameter and 186 mm long is to be pulled in tension. Calculate the force necessary to cause a 0.0119 mm reduction in diameter. Assume a value of 0.33 for Poisson's ratio.
Air ?ows in a 20-cm-diameter duct at 120-C and 120 kPa with a mass ?ux of 5 kg=s. The circular duct converts to a 20-cm square duct in which the temperature and pressure are 140-C and 140 kPa, respectively. Determine the velocities in both section..
Water vapor in a piston-cylinder assembly undergoes a process from saturated vapor at 150°C to a pressure of 300 kPa. During the process, the pressure and specific volume are related by pv 1.2 = constant. Neglecting kinetic and potential energies, d..
The power output of a non-ideal gas turbine cycle having a compressor thermal efficiency of 80% and a turbine thermal efficiency of 90 %., open-cycle gas turbine cycle is 75 MW and its pressure ratio is 16. Air enters the compressor at 520 R and ente..
What is the primary difference between the strength of a structure and the strength of a material? Is a strong material stiff?
The homogeneous gate with mass M , length L, width, b, and thickness, t, is used to regulate the height, H of the water in a reservoir. Determine an expression for the mass of the gate as a function of the known variables. What is the angle of the ga..
A spring stiffness k= 500 n/m is mounted against a 10 kg block. if the block is subjected to a force of 1 KN determine the velocity of the block at s=0.3 m when s=0, the block is at rest and the spring is uncompressed. The coefficient of fricktion is..
Taking the temperature of the surrounding surfaces to be 20°C also, determine the rate of heat loss from the steam pipe.
For what range of mass flow rates will the LN2 have a bulk temperature rise of less than 1.5 K over the length of the channel - At your minimum flow rate, estimate the maximum wall temperature in the channel.
What impact would collecting recyclables one week and collecting green waste the next week have on the recycling rate?
In an earlier edition, the writer asked the following question about Fig. 5.1: "Which of the three graphs is a more effective presentation?" Why was this a dumb question?
the primary type of interior-automatic bonding between water molecules in a solution in pure water is? deformation occurs when a material is subjected to enough tensile stress that it deforms in a shape but then returns to it is original diminuendos ..
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