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Carbon dioxide (CO2) modeled as an ideal gas flows through the compressor and heat exchanger shown in Fig. P4.100. The power input to the compressor is 100 kW. A separate liquid cooling water stream flows through the heat exchanger. All data are for operation at steady state. Stray heat transfer with the surroundings can be neglected, as can all kinetic and potential energy changes. Determine (a) the mass flow rate of the CO2, in kg/s, and (b) the mass flow rate of the cooling water, in kg/s.
calculate the reynolds number for water dynamic viscosity of 7.98 10-4 nsm2 flowing through a rectangular pipe 4 cm
Water is heated in a closed pot on top of a stove while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The work done amounts to 500 J. determine the fin..
energy in the home personal energy use and home energy efficiency. nbspestimate your personal annual energy usage for
the surface pressure of venus is about 90 bar and the surface temperature is ap-proximately 880 degrees f. the
Air in a piston cylinder assembly undergoes a Carnot power cycle. The isothermal expansion and compression processes occur at 1400 Kelvin and 350 Kelvin, respectively. The pressures at the beginning and end of the isothermal compression are 100 kPa a..
Five kg of nitrogen (N2) undergoes a process from p1 = 5 bar, T1 = 400K to p2 = 2 bar and T2 = 500K. Assuming ideal gas behavior, determine the change in entropy, in kJ/K
water is to be pumped from a dam to a storage tank 20 m above at a rate of 70 ls. the electric power needed to achieve
Calculate the concentration (in weight percent) of molybdenum that must be added to tungsten to yield an alloy that contains 1.51 x 1022 Mo atoms per cubic centimeter.
The magnetic flux density within a bar of some material is 0.630 tesla at an Hfield of 5 X 105 A/m. Compute the following for this material: (a) the magnetic permeability, and (b) the magnetic susceptibility. (c) What type(s) of magnetism would you s..
compare it with efficiency of an otto cycle operating with the same maximum pressure?
A 8 m rectangular gate shown below weighing 200 N is held in place by a horizontal flexible cable as shown in the figure below. Water acts against the gate which is hinged (frictionless hinge) at point A. determine the tension in the cable.
a piston weighing 35 lb slides down a vertical cylinder. the radical gap between the piston and cylinder is 0.002 in.
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