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Air at 0.1 kg/s is to be cooled from 140 C to 40 C in a heat exchanger. The coolant water is at 20C constant throughout the heat exchanger. The convective heat transfer coefficients are 100 W/m2K and 500 w/m2K on the air and water sides respectively. The air and water are separated by material 100mm thick, thermal conductivity 10 W/mK and the surface area is 4m2 per meter length of the unit.
Calculate the overall heat transfer coefficient between the air and the water (answer in W/m^2K).
The Brayton cycle shown in figure 6.41 operates using CO2 as a working fluid with compressor and turbine isentropic efficiencies of 1.0. Calculate the thermal efficiency of this cycle when the working fluid is modeled.
in a crank or slotted lever quick mechanism the distance between the fixed centre is 150 mm and driving crank is 75 mm. determine the ration of the time taken of cutting & return strake .
A hydraulic cylinder is 100mm diameter and is fed by a pipe 15mm in diameter. If the piston in the cylinder moves forward at a rate of 0.2ms^1
Determination of the open-loop system
How can be determined the dynamic parameters of a second order system, wiht an Inertia (M), a dampening coeficient ( C ) and a Stiffness constant ( K).
Determine the average luminous exitance of the opaque interior surfaces of the room - what is the reflected component at this point?
find the natural frequencies of oscillation of the double-pendulum below where m1=m2=m, and L1=L2=L.
Important information about Overall Heat Transfer Coefficient A copper sphere of internal diameter 2 m and wall thickness 40 mm is insulated with 75 mm of expanded polystyrene
Find the transfer function for the following impulse response
A satellite is in Earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. What is the semi-major axis of the orbit? b. What is the eccentricity? c. If the true anomaly is 160 degrees, what is the satellite's ..
No heat interactions with the environment are allowed. You do not need to describe the details of the process that produces the maximum work, but you do need to describe the final state of the blocks fully.
A 20-mm diameter rod made of a ductile material with a yield strength of 350 MPa is subjected to torque of 100 N.m and a bending moment of 150 N.m. An axial force is then gradually applied. Determine the value of force when the rod begins to yield..
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