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The counterflow, concentric tube heat exchanger of Example 11.1 is replaced with a compact, plate-type heat exchanger that consists of a stack of thin metal sheets, separated by N gaps of width a. The oil and water flows are subdivided into N/2 individual flow streams, with the oil and water moving in opposite directions within alternating gaps. It is desirable for the stack to be of a cubical geometry, with a characteristic exterior dimension L. Determine the exterior dimensions of the heat exchanger as a function of the number of gaps if the flow rates, inlet temperatures, and desired oil outlet temperature are the same as in Example 11.1. Compare the pressure drops of the water and oil streams within the plate-type heat exchanger to the pressure drops of the flow streams in Example 11.1, if 60 gaps are specified.
a heat pump is used to maintain a house at a constant temperature of 23degc. the house is losing heat to the outside
Determine the maximum speed at which the car with mass m can pass over the top point A of the vertical curved road and still maintain contact with the road.
A hypothetical element X has 3 naturally occurring isotopes: 41.20% of 21X, with an atomic weight of 21.016 amu, 2.20% of 22X, with an atomic weight of 21.942 amu, and 56.60% of 24X, with an atomic weight of 23.974 amu. On the basis of these, calcula..
the effort required to maintain a scanning electron microscope is known to increase by a fixed percentage each year. a
Steady State Thermal analysis can be use to simulate and obtain results to support the design optimization / objectives
The 4 lb pulley has a diameter of 1 ft and the axle has a diameter of 1 in. if the coefficient of kinetic friction between the axle and the pulley is 0.20, determine the vertical force P on the rope required to lift the 20 lb block at constant vel..
(a) Propose a feedback control method and sketch the schematic diagram. (b) Suggest a feedforward control method and sketch the schematic diagram.
Calculate the heat transfer per kilogram of air between sections (1) and (2), and the stagnation pressure at section (2).
Assume Complete combustion write out a stoichmetric equation for 1 mole of an arbitrary alcohol Cx Hy Oz determine the number of moles of air required to burn 1 mole of fuel?
Provide a plan view layout drawing of major components with key dimensions of your design in A3 size. Off the shelf components must be used where appropriate however the frame will be constructed in house to your design so you will need to accommod..
Find Max Level Airspeed at 95% RPM and find Max Range Airspeed (VBR) and Max Endurance Airspeed (VBE) - find Max Specific Range and Max Range Airspeed
Immediately before failure, the testing machine records a force (F) of 50N, and a deformation (δ) of 2mm. We need to determine the maximum flexural strength (σ)
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