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A shell-and-tube heat exchanger must be designed to heat 2.5 kg/s of water from 15 to 85 oC. The heating is to be accomplished by passing hot engine oil, which is available at 160 oC, through the shell side of the exchanger. The oil is known to provide an average convection coefficient oh ho = 400 W/m2 *k on the outside of the tubes. Ten tubes pass the water throughthe shell. Each tube is thin walled, of diamter D = 25mm, and makes eight passes through the shell. If the oil leaves the exchanger at 100 oC, what is its flow rate? How long must the tubes be to accomplish the desired heating?
consider a non-ideal vapor-compression cycle where refrigerant 134a flows at a rate of 0.05 kgs. the refrigerant enters
when the motorcyclist is at a he increases his speed along the vertical circular path at the rate of v v dot 0.04s
Determine Fourier Number, Compare two identical steel spheres, except the first has a two inch diameter while the second sphere has a four inch diameter. The larger sphere will have a Fourier number approximately
A steel alloy to be used for a spring application must have a modulus of resilience of at least 2.07 MPa (300 psi). What must be its minimum yield strength?
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